Research on Quality Construction of National Logistics Hub in Yangtze River Delta Based on DPSIR Model

: Under the background of double circulation, the national logistics hub will play an important role of node, hub and platform in the national logistics network. As a national strategy, the integration of Yangtze River Delta matters a lot to the national logistics network. This study constructs the evaluation index system of national logistics hubs and studies the construction of national logistics hubs in Yangtze River Delta and central China based on DPSIR theory. DPSIR model integrates the advantages of pressure-state-response (PSR) model and driving-state-response (DSR) model, and evaluates from driving force, pressure, state, influence and response. The results show that the construction of national logistics hubs in Shanghai, Nanjing, Suzhou, Ningbo-Zhoushan, Jinhua and other cities in the Yangtze River Delta is obviously better than that in the central part of China. In order to adapt to the integrated development of Yangtze River Delta and enhance the status of Anhui province in the national logistics hub network, logistics hub cities in Anhui Province should take effective measures from five aspects of the model. For example, concentrate on developing the economy; optimize the urban transportation system; build distinctive industrial clusters; develop multimodal transport facilities; innovate smart logistics models; treasure the construction of cold chain logistics; strengthen macro policy support; building a response mechanism for ecological green development.


Introduction
The National Development and Reform Commission and the Ministry of Transport of the People's Republic of China jointly, in December 2018, issued the National Logistics Hub Layout and Construction Plan. In 2019, there were 23 national logistics hubs selected in the list, and another 22 cities were selected in 2020. These 45 national logistics hubs will play an important role as nodes, hubs, platforms in the national logistics network in the future. In December 2019, the Communist Party of China Central Committee and the State Council issued an outline of the integrated regional development of the Yangtze River Delta. The Yangtze River Delta integration was promoted to national strategy, with the Belt and Road, the Pearl River Delta integration, Yangtze River Economic Belt, commit to improve the spatial pattern of China's reform and opening up [1][2]. The purpose of the integrated development of regional economy in the Yangtze River Delta is to make the economy fully integrated, free flow of production factors to improve the efficiency of scale economy [3]. By comparing the construction of national logistics hubs in the Yangtze River Delta and central region, this paper try to find out the factors that promote and hinder the development of logistics, provide suggestions for the high-quality development of the logistics industry in Anhui province.

Literature Review
The research on Yangtze River Delta involves many fields and aspects. Shao Yaochun explored ways to promote the transformation and upgrading of traditional agriculture in the Yangtze River Delta [4]. Zhang Wei and Hu Yan studied the relationship between innovative human capital and green total factor productivity in the Yangtze River Delta by using

The Selection of Logistics Hub, Node City
Select 6 national hub cities in the Yangtze River Delta: Shanghai, Nanjing, Suzhou, Jinhua (Yiwu), Ningbo-Zhoushan, Wuhu and 5 national logistics hub cities in the central region: Taiyuan, Ganzhou, Zhengzhou, Yichang, Changsha and 5 logistics node cities in Anhui (Hefei, Fuyang, Bengbu, Anqing, Chuzhou) The relevant data of 16 cities in 2018 were compared and analyzed horizontally. This paper studies the development and construction of national logistics hub in Yangtze River Delta, and puts forward suggestions for the construction of national logistics hub in Anhui.

Introduction to the DPSIR Model
DPSIR model is a research model that integrates the advantages of pressure-state-response (PSR) model and driving-force state-response (DSR) model to solve environmental problems, including five factors: Driving force (D), pressure (P), state (S), influence (I), response (R). In recent years, DPSIR model, which is characterized by systematic, comprehensive and flexible, has been widely used in ecological security, sustainable utilization of resources, prediction of environmental risk change, sustainable utilization of water and soil resources, and sustainable agricultural development [13][14][15][16][17].
The layout and construction of logistics hubs follow certain internal mechanisms, which require comprehensive consideration of various micro and macro factors. The DPSIR model includes economic, social, resource, environmental and other factors, and can be applied to national logistics hubs to carry the power, pressure, state of urban construction, as well as economic and social influences and feedbacks. Driving force D refers to the impetus injected into the high-quality development of logistics industry by the development of society, economy and upstream industry; Pressure P refers to the constraints caused by the lack of urban transportation, infrastructure and information technology for the high-quality development of logistics industry [18]; State S refers to the state level of logistics industry under the coexistence of power and pressure; Impact I refers to the social, economic and environmental consequences caused by the high-quality development of logistics industry; Response R refers to the efforts made by the industry and government departments to enhance the driving force, relieve the pressure and improve the state of high-quality development of logistics industry. The evaluation model framework of national logistics hub high-quality construction based on DPSIR model is shown in Figure 1.

Logistics Development Evaluation Based on DPSIR Model
According to the relationship between the five systems in DPSIR model and the characteristics of logistics industry, the construction status of logistics hub is analyzed by selecting indexes. High quality logistics industry driven by economic and social development, facing the urban transportation and infrastructure, information level, such as pressure, the driving force and pressure under the dual influence of logistics industry development in high quality can use economic support and industry support, industry influence in logistics freight traffic and transportation turnover, In order to enhance the driving force, relieve the pressure, and improve the state, the subject must adopt strategies to respond, leading to industry response and ecological response [19][20].

The Data Source
The

An Empirical Analysis of High Quality
Construction of National Logistics Hub in Yangtze River Delta

Driving Force System
The driving force mainly includes social development force, economic development force and upstream industry development status. The power of social development is reflected by the area, population and population density of a city. The area and population reflect the size and market demand of a city; GDP reflects the ability of a city to create economic value, per capita GDP reflects the ability of urban per capita to create value, and per capita disposable income in urban and rural areas reflects the consumption ability of market subjects; The development of upstream industries, such as the added value of wholesale and retail, wholesale sales, etc., jointly drive the upgrading and innovation of the logistics industry.
The area of the Yangtze River Delta only accounts for 2.2% of China's territorial area, among which only Ningbo Zhoushan has a larger geographical area of 32016km 2 . The geographical area of Ganzhou is 39380km 2 , about 6.2 times that of Shanghai, the geographical area of Yichang is 21000km 2 . Ganzhou, Ningbo-Zhoushan and Yichang are far larger than other cities in terms of geographical area, with Bengbu, Wuhu and Shanghai coming in at the bottom. Shanghai has the highest population density, which brings broad market demand and sufficient labor force for the high-quality development of logistics industry. As the capital city of Henan province with a large population, Zhengzhou ranks the second in population density and attracts a large number of provincial talents. The population density of Yichang and Ganzhou, located in the vast central region, is small, which poses a challenge to the development of the logistics industry. The large market demand for a variety of consumer goods and services and easy access to labor force are important driving forces for the high-quality development of the logistics industry.
It can be seen from Table 2 that the top three cities in terms of GDP are Shanghai, Suzhou and Nanjing, and Shanghai is in the absolute leading position, 8.4 times that of Jinhua and 3.3 times that of Zhengzhou. Economic prosperity will inevitably drive the development of life, and development is the basis and key to solve problems. The top three cities in terms of per capita GDP are Suzhou, Nanjing and Shanghai. The per capita GDP of Suzhou and Nanjing is higher than that of Shanghai, because Shanghai has a larger population base. Changsha, a city in central China, tops the list in both gross domestic product and GDP per capita. One possible reason is the Beijing-Guangzhou railway. "The sound of the train, gold ten thousand liang", the cities along the Beijing-Guangzhou railway slowly phased out the cities along the Grand Canal, such as Zhengzhou, Shijiazhuang along the Beijing-Guangzhou more than Kaifeng and so on. It can be seen from Table 3 that Shanghai, Ningbo, Zhoushan, Zhengzhou and Nanjing have higher fiscal revenue. Among the logistics node cities in Anhui Province, only the provincial capital Hefei has a high fiscal revenue, while the fiscal revenue of other regions is relatively low. The development of logistics industry in Anhui province depends on economic driving. Table 4. Total import and export volume by city.

Shanghai Nanjing Suzhou Jinhua Ningbo-Zhoushan Taiyuan Ganzhou Zhengzhou
Total import and export (100 million yuan) It can be seen from Table 4 that Shanghai ranked first in total import and export with RMB 3,404,682 million, followed by Suzhou, Ningbo-Zhoushan and Nanjing. Although the geographical area of Shanghai is small, due to its unique geographical position, Shanghai has won a place in the import and export trade and laid a solid foundation for the high-quality development of the logistics industry. It can be seen from Table 5 that Shanghai has the highest per capita disposable income of urban residents, followed by Nanjing, Ningbo and Zhoushan. Rural residents have the highest per capita disposable income in Ningbo-Zhoushan, followed by Shanghai and Changsha. The gap of disposable income between urban and rural residents is the largest in Shanghai (40,420 yuan), followed by Nanjing (36,736 yuan) and Jinhua (28,665 yuan). It can be seen from Table 6 that in 2018, the total retail sales of consumer goods in Shanghai, Nanjing, Suzhou, Zhengzhou and Changsha were RMB 1,347.921 billion, 618.574 billion, 574.690 billion, 532.44 billion and 524.703 billion respectively. The total amount of social consumer goods in Shanghai is the highest, followed by Zhengzhou and Changsha, whose total retail amount of social consumer goods is much higher than other central cities. The total retail amount of social consumer goods in logistics node cities in Anhui province is very low, which reflects that improving residents' consumption level and regional economic ability is the top priority to promote the high-quality development of logistics industry. It can be seen from Table 7 that the wholesale and retail trade in Shanghai and Nanjing are in the leading position in the whole country. Although the wholesale and retail trade in Wuhu lags behind a lot, it is in the stage of rapid growth. In 2020, Wuhu was included in the list of national logistics hub construction, which indicates to some extent that Wuhu has great potential for economic development.

Pressure System
The pressure mainly includes urban traffic pressure and infrastructure pressure. Urban traffic pressure involves the total length of highways, railway operating length, port berths, etc. Infrastructure pressure refers to the level of basic logistics facilities and reflects the comprehensive logistics capability. The more complete the logistics infrastructure is, the higher the logistics carrying capacity and social recognition degree will be. At the same time, the intelligent logistics relying on information technology has been paid much attention by people, and the level of information technology has also become a problem that the development of logistics industry must face. As can be seen from Table 8, the total length of highways in Ganzhou is the longest, reaching 31,055 kilometers, followed by Chuzhou and Hefei. Ganzhou, located in the southern part of the central province of Jiangxi and more than six times the size of Shanghai, has more roads connecting urban and rural areas than any other city, and ranks first in the number of expressways. Ganzhou railway mileage is 555 km, Shanghai 466 km and Fuyang 317 km. The total highway mileage of the six cities in Anhui province is not much different from other cities, but the level of expressway mileage and railway mileage is lower than that of the Yangtze River Delta and the national logistics hub cities in the central region.
The Yangtze River Delta has a trunk railway network with "four vertical and five horizontal" as the backbone. In 2017, the length of railways in the Yangtze River Delta reached 10097.9 km, and the railway density was 2.9km/km 2 , more than twice the national average. Secondly, the Yangtze River Delta has a road network with "four vertical, four horizontal and one ring" as the main channels. In 2017, the length of highways in the Yangtze River Delta reached 495,000 km, and the network density was 14,000 km/km 2 , 2.8 times the national average. Thirdly, the Yangtze River Delta has developed waterway network, the Yangtze River, Huaihe River, Grand Canal, Qiantang River and other interwoven inland waterway network forming, inland waterway navigable mileage of 41998km, accounting for 33.1% of the total mileage of the country, among which the mileage of grade channel reaches 20000 km. Shanghai shipping channel mileage is 1973 kilometers, Jinhua shipping channel mileage is 9766 kilometers, Shanghai shipping channel is far smaller than Jinhua city, but the passenger turnover and freight turnover of Shanghai port is far more than Jinhua city, ranking the forefront of the country. Shanghai has 1,978 port berths, while Zhoushan has 309 port berths. Shanghai has an obvious advantage in making use of sea transportation to make up for the lack of land space. As can be seen from Table 9, the actual road area is 302.81 million square meters in Shanghai, followed by Nanjing and Suzhou. Chuzhou has the largest road area per capita with 42.5 square meters, followed by Fuyang and Nanjing. The per capita road area of Shanghai is less than that of cities in Anhui Province, less than half of that of Fuyang, which makes Shanghai face heavy traffic pressure. Hefei, capital of Anhui Province, has the smallest road area per capita, about one third of that of Chuzhou. The actual road area in Anqing and Chuzhou is smaller than that in other cities. It can be seen from Table 10 that the largest number of trucks is 1,435,651 in Taiyuan, followed by Shanghai and Zhengzhou. Mineral is the pillar industry of Taiyuan. The mining, processing and sales of various advantageous minerals cannot be separated from transportation. The number of trucks in Taiyuan is much higher than that in other cities. Nanjing has the largest number of trailers with 13,187, followed by Fuyang and Hefei. In general, except Fuyang, the number of transportation vehicles in other cities in Anhui province is lower than that in Jiangsu, Zhejiang and Shanghai and the logistics hub cities in central China. It can be seen from Table 11 that Shanghai, Suzhou and Nanjing are at the leading level of informatization in China, and Hefei ranks first in Anhui Province. The number of fixed telephone, mobile phone and Internet broadband users are respectively 1.18 million, 10.07 million and 3.15 million. The high-quality development of logistics industry cannot be separated from intelligence, informatization and networking. To accelerate the improvement of the level of information technology, we need to make full efforts to move forward and work for a long time. It can be seen from Table 12 that the number of ships in Anhui province is higher than that in Nanjing, Ningbo, Zhoushan and other places, which indicates that the waterway transportation in Anhui Province has development potential. Although Anhui is not as convenient as Jiangsu, Zhejiang and Shanghai with ocean waterway transportation, but the Yangtze River and Huaihe River provide convenience for Anhui water transportation, Anhui should in-depth planning of water transportation routes in the future, improve the river level, build multimodal transportation facilities, improve the strategic cooperation level with Shanghai port and Ningbo -Zhoushan port, and play the water transportation potential.

State System
The development of logistics is reflected by economic support and industry support. Economic support includes the total amount of social logistics, the total revenue of logistics and related industries, the added value of logistics and its proportion in GDP and added value of service industry, etc. Industry support force involves the total postal business, Courier business income and other indicators. It can be seen from Table 13 that the total amount of social logistics is 30,213.2 billion yuan in Jiangsu, followed by Zhejiang, Henan and Anhui. The highest total revenue of logistics and related industries was 10.3805 billion yuan in Shanghai, followed by Zhengzhou, Yichang and Changsha.
Anhui logistics related industry revenue is only 411.55 billion yuan, about two-fifths of Shanghai, Anhui and Shanghai there is a huge gap; However, social logistics in Anhui province is developing rapidly, and the business volume of express delivery will exceed 2 billion pieces in 2020. It can be seen from Table 14 that the total postal business volume is Shanghai, Jinhua, Nanjing and Hefei in order, and the express business income is Shanghai, Jinhua, Nanjing and Hefei in order. The total volume of postal business and express business income can reflect the high-quality development level of a city logistics industry. Shanghai postal and express business income is among the top in China, and its express business income is more than 20 times that of Hefei. In Anhui province, only Hefei city has a small gap between Courier business income and central cities of Zhengzhou and Changsha, but a large gap between the development level of logistics industry and Jiangsu, Zhejiang and Shanghai.

Impact System
The development of logistics industry affects the cargo transportation volume and cargo transportation turnover, and the transportation network and industry development can reach the transportation level when facing the coexisting driving force and pressure [18]. Cargo transport volume and turnover include highway, waterway, railway, air and other means of freight transport volume and turnover. It can be seen from Table 15 that Shanghai has the highest freight volume, followed by Ningbo-Zhoushan. Anhui city freight volume and the central city difference is not big, but with Shanghai and Ningbo -Zhoushan gap is larger. Cargo transport overall presents to road transport, but Shanghai and Ningbo-Zhoushan and other parts of the city water transport freight volume far exceeds the road freight volume, lies in the natural geographical advantages of Shanghai port and Ningbo-Zhoushan port, most of the other central and western regions are limited by geographical location and choose road and railway transport. Most cities in Anhui mainly choose road or railway transportation, the railway freight volume is small because the final destination often needs to be used with road transportation. As can be seen from Table 16, the turnover of cargo transportation in Shanghai is 2,3258 billion ton-kilometers, much higher than that of other cities. Jinhua, Ningbo-Zhoushan and Nanjing followed. Yiwu express delivery volume ranks first in the world, and Jinhua cargo turnover also ranks among the top in the country. It can be seen from Table 17 that Zhengzhou has the largest railway transportation turnover of 21.382 billion ton-kilometers, followed by Nanjing, Changsha and Shanghai. Wuhu is only 0.08 million ton-km. The railway transportation turnover of Zhengzhou is about 21 times that of Shanghai and 2.9 times that of Nanjing. From the perspective of air transport, Shanghai air cargo turnover is 6.2 billion tons kilometers, which is in the absolute leading position, while Zhengzhou air cargo turnover is 2.912 billion tons kilometers, which is a large scale of air transport. Multimodal logistics can effectively improve the quality of logistics and transportation, such as "water-iron-public" or "air-iron-public" combination can effectively reduce logistics costs and improve logistics efficiency, but this depends on the completeness of logistics infrastructure. As can be seen from Table 18, Shanghai had the highest cargo throughput of 730.48 million tons, followed by Ningbo-Zhoushan, Suzhou and Nanjing. Shanghai has the highest container throughput of 411.26 million TEU, ranking first in the world for 10 consecutive years, followed by Ningbo -Zhoushan, Suzhou and Nanjing. The cargo throughput of Wuhu port is 11.16 million tons, which is only 1/6 of that of Shanghai, and the container throughput is 803,100 TEU, which is only 1/4 of that of Nanjing, although it is large in Anhui Province. The implementation of the integration strategy of the Yangtze River Delta provides Anhui with a rare opportunity. Whether it can grasp the opportunity is the key to promote the economic promotion of Anhui.

Response System
The response includes two aspects: industry response and ecological response. The industry response is the industry's attempt to cope with the dilemma in the spirit of strengthening the driving force, alleviating the pressure and improving the state. It is reflected by the total social logistics cost and its proportion in GDP, transportation cost, storage cost and other indicators. Ecological response is to take measures to protect the environment in order to reduce the damage of logistics development to the environment [21], which is reflected by indicators such as the utilization rate of industrial solid waste, utilization rate and park green space area per capita. As can be seen from Table 19, the total cost of social logistics in Jiangsu province is the highest, which is 128.632 billion yuan, but its proportion in GDP is the lowest, which is only 13.9%. The cost of social logistics in Anhui province was 471.1 billion yuan, accounting for 15.7% of GDP. Anhui should take active measures to reduce cost and increase efficiency, reduce the total cost of social logistics GDP ratio. The specific composition of logistics costs around the situation is not the same: Jiangsu, Henan, Hunan and Anhui' transportation costs accounted for the highest proportion, Zhejiang' storage costs accounted for the highest proportion.

Logistics enterprises
Shanghai Nanjing Suzhou Jinhua Ningbo-Zhoushan Taiyuan  Ganzhou  Zhengzhou  5A  26  6  6  2  3  3  0  9  4A  137  17  45  30  36  30  6  40  3A  66  17  90  50  93  11  31  38  total  229  40  141  82  132  44  37  87   Logistics enterprises  Yichang  Changsha  Hefei  Wuhu  Fuyang  Bengbu  Anqing  Chuzhou  5A  2  8  0  1  0  0  0  0  4A  14  51  40  16  2  0  2  2  3A  37  26  7  11  15  2  3  0  total  53  85  47  28  17  2  5  2  Table 20 shows that by March 2020, there are 229 logistics enterprises with 3A or above in Shanghai, 141 in Suzhou, 132 in Ningbo-Zhoushan, 85 in Changsha and 40 in Hefei. Among the 5A-level logistics enterprises, there are 26 in Shanghai,8 in Changsha, 6 in Suzhou, 3 in Ningbo --Zhoushan and 0 in Hefei. The development gap of logistics enterprises in Anhui province is obvious. It can be seen from Table 21 that Suzhou has the highest total exhaust emission of 2,184.4 billion square meters, followed by Shanghai, Nanjing, Ningbo-Zhoushan. From the perspective of sulfur dioxide emissions in cities, Suzhou has the highest sulfur dioxide emissions, reaching 61,700 tons; The sulfur dioxide emission in Yichang is much higher than that of other cities, more than twice that of Shanghai, which reflects the lack of environmental protection awareness in some areas. With the coming of carbon peak and carbon neutral period, it is urgent to take effective measures to alleviate it.  Table 22 shows that Suzhou, Nanjing and Shanghai have the highest utilization of solid waste. Zhengzhou, Yichang and Hefei had higher utilization; The utilization in Wuhu, Bengbu, Anqing and Chuzhou was relatively low. The discharge of industrial solid waste is closely related to economic prosperity and the development performance of the logistics industry. For example, Shanghai and Nanjing have high utilization of industrial solid waste. As can be seen from Table 23, Anqing has the highest per capita park green area (16.3m 2 ), followed by Nanjing, Chuzhou and Shanghai. The per capita green space of other cities in Anhui is not much different from Jinhua, Yichang and other places. The comprehensive utilization rate of industrial solid waste in the Yangtze River Delta is relatively high, while that in the central cities is relatively low. For example, the comprehensive utilization rate of industrial solid waste in Yichang is only 49.96%, far lower than that in other cities.

Research Conclusion
From the perspective of driving force system, Shanghai, Nanjing, Suzhou, Ningbo-Zhoushan, Zhengzhou, Changsha and other national logistics hub cities have strong driving forces for the high-quality development of logistics industry. The high-density population of national logistics hub cities such as Shanghai, Zhengzhou and Nanjing strengthen the social development power for the high-quality development of logistics industry; the national logistics hubs such as Shanghai, Nanjing, Ningbo-Zhoushan and Zhengzhou, which carry the economic prosperity of the cities, are also important driving forces for the high-quality development of the logistics industry. Anhui Fuyang, Anqing, Chuzhou and other cities' logistics driving force are weak.
From the perspective of pressure system, Shanghai, Taiyuan, Wuhu, Bengbu, Fuyang and Anqing are faced with a relatively large urban traffic pressure. Yichang, Ningbo --Zhoushan, Wuhu and Bengbu face great pressure on logistics infrastructure; Wuhu, Bengbu, Anqing, Chuzhou and other cities are under great informational pressure. From the state system, the development level of logistics industry in Shanghai is in the absolute leading position; Shanghai, Suzhou, Nanjing, Ningbo-Zhoushan and other regions have strong economic support; In the Yangtze River Delta, Jinhua, Ningbo -Zhoushan, Nanjing and the central region of Zhengzhou, Changsha, Hefei industry support strength is strong. From the perspective of impact system, Shanghai, Ningbo -Zhoushan, Jinhua logistics industry high-quality development level is the best; The overall development level of logistics industry in Nanjing, Zhengzhou, Changsha and Hefei is good, among which the development momentum of aviation logistics in Zhengzhou is good, obviously better than most other cities; The high-quality development of logistics industry in Bengbu and Wuhu has great room for improvement.
From the perspective of response system, Shanghai, Nanjing, Suzhou, Jinhua, Ningbo-Zhoushan and other national logistics hub cities in the Yangtze River Delta, as well as Zhengzhou, Hefei and other cities, have good industrial and ecological response. Yichang, Bengbu, Fuyang and other cities did not respond enough.

Suggestions
As an important pole of the Yangtze River Delta integration strategy, Anhui province has a big gap in the quality development level of its logistics industry compared with Jiangsu, Zhejiang and Shanghai. How to improve the construction level of national logistics hub in Anhui Province? Based on the above research conclusions, some suggestions are put forward to promote the high-quality development of logistics industry in Wuhu, a national logistics hub in Anhui Province, and logistics node cities: (1) Focus on economic development and enhance the driving force of logistics hub. The sustainable development of city economy will inevitably promote the prosperity of logistics industry. Anhui province is a densely populated province, the supply of logistics industry is still difficult to meet the market demand, restricting the high-quality development of logistics industry is a main reason for the overall economic level is not high, per capita consumption capacity is not strong. Therefore, Anhui province to improve the overall level of logistics industry, must seize the opportunity of the Yangtze River Delta integration development, establish close ties with Jiangsu, Zhejiang and Shanghai, improve the level of opening up, optimize the environment.
(2) Optimize the urban traffic system and ease the pressure on logistics hubs. Urban transportation network is a direct factor that affects the high-quality development of logistics industry. The increase of logistics demand has higher and higher requirements on the transportation network [22]. First of all, on the basis of the original transportation network, strengthen the expansion and transformation of railway, effectively improve the railway transportation capacity and efficiency, make the transportation more convenient and rapid, more efficient and diversified services. Secondly, accelerate the implementation of expressway expansion, national and provincial trunk roads upgrade, rural road expansion and extension, improve the highway transport network with expressway as the framework, national and provincial trunk roads and rural roads as the support. Third, implement the construction of comprehensive transportation channels across the Yangtze River and Huaihe River, enhance the connectivity capacity, strengthen the construction of port infrastructure in the Yangtze River and Huaihe River basins, and realize the coordinated development of ports and inland waterways in the region.
(3) Create characteristic industrial cluster, save logistics transaction cost. Industrial cluster development can quickly collect all kinds of information, promote the formation of professional market, reduce transaction costs, and give play to the advantages of scale. In order to save the cost of storage, transportation and management, the logistics enterprises should actively participate in the construction of characteristic industrial cluster and accelerate the formation of professional market [23].
(4) Multimodal transport facilities will be built to upgrade logistics hubs. Multimodal transport can effectively bring together and play to the advantages of multiple modes of transport. Anhui province integrates the advantages of waterway, highway, railway and air transportation, and has the conditions of multimodal transportation. It should speed up the construction of multimodal transportation infrastructure such as "water-iron-public" or "air-iron-public", and strengthen the "one-stop" comprehensive information service for enterprises. The construction of Wuhu port type national logistics hub should take advantage of the advantages of low water transportation cost and large freight volume, improve the multi-modal transportation infrastructure such as hot metal transfer site, and promote the high-quality development of combined transportation [24].
(5) Improve the scientific and technological level of the industry and innovate the smart logistics mode. The future competition is the competition around the core technology, who master the core technology, who can win in the fierce market competition. The new generation of information technology innovation applications, such as the Internet of Things, cloud computing, big data and mobile Internet, have increasingly highlighted the position of smart logistics. Hefei should encourage logistics enterprises, scientific research teams of universities and industry associations to deepen cooperation, build a high-level logistics information service platform around the key links of logistics, intelligently collect and process information of all links of logistics and supply chain management throughout the whole chain, and improve efficiency.
(6) Attach importance to the construction of cold chain logistics and improve the logistics hub system. The consumption level will increase and the market demand will expand, and the development of cold chain logistics will be accelerated. Anhui's economic development momentum is good, Anhui should seize the key opportunity to rise, relying on the production area, speed up the construction of cold chain logistics infrastructure, improve the "cold storage, transportation, processing, sales" integration of cold chain logistics system. Anhui province is actively building provincial demonstration logistics parks with cold chain logistics as the mainstay, and promoting the improvement of interconnected logistics hub system with the construction of major cold chain logistics projects.
(7) Strengthen policy response, enhance logistics hub competitiveness. National and local governments will increase policy supply and vigorously support the construction of logistics hubs, logistics parks, fast distribution nodes and smart logistics service platforms. Anhui should grasp the demand, improve the system of "channel, hub and network "with logistics hub as the core, give play to the radiation and convergence function of logistics hub, and enhance the competitiveness.
(8) Strengthen ecological green response, pay attention to the development of green logistics. Extensive economic development will cause damage to the environment, and development cannot be achieved without the cultivation of environmental awareness and the practice of energy conservation and emission reduction. Logistics industry development must be of high quality in environmental protection and resource conservation as the goal, Anhui should strongly encourage enterprises to adopt green transportation, green storage, green machining and other measures to reduce the damage to environment and resources waste, such as the last one kilometer for distribution, using green energy vehicles using recycled filling material product packaging, etc., support green logistics development.