Abstract

Logistics corridor is the backbone logistics service system of regional transportation infrastructure，as well as the component of regional spatial system and subsystem.The logistics corridor not only has functions on freight transportation in its main line，but also provides a series of logistics services such as storage，sorting，packaging，circulation processing，distribution and information processing in the logistics nodes，by which it can also support the regional economic circulation. It has a unique position in regional space，and plays an important role in local economic development.Since 21st century，Chinese government has regarded logistics corridor as a productive force promoting the development of regional economic. Nevertheless，the basic aspects of it，including the connotation，formation process and the causes，its regional spatial effects and generation mechanism during supporting the regional economic circulation，still needs to be studied systematically.At the same time，the structure，the layout and the different spatial effects of China's logistics corridor also needs to be fully reviewed and verified. Based on this，we look on the logistics corridor as the constituent elements and sub-systems of the regional spatial system，which is the entry point of the article. From a new perspective of the regional spatial effects of logistics corridor，my research focuses on three aspects，through which the author will draw some corresponding conclusions.

The first part is a theoretical study. Based on the traffic location theory，the agglomeration economic theory，and the regional spatial structure theory，the author analyzes the connotation，the formation and its causes，and the regional spatial effects of logistics corridor，as well as its internal dynamics and external performance. The research shows that industrial agglomeration，interregional industrial division of labor and contact and trade，and traffic volume centralizationwill promote the formation of the logistics corridor，and generate the regional economic agglomeration and spatial spillover effects during the service process of regional economic circulation，and therefore cause the evolution of regional spatial structure. The former is intrinsic motivation of the regional spatial effects of logistics corridor，and the latter is the external performance.

The second part is an empirical research. Based on the literature of this region，the research methods and tools of mathematical model，econometric model，spatial statistics and GIS，the author studies 11 comprehensive logistics corridors：Firstly，the author evaluates the regional logistics service level of logistics corridor. The research shows that the logistics service level of China’s logistics corridor has been obviously improved during the study period，but the temporal and spatial differences also exist. The logistics services level in the west and those across the west and east are low quality and with obvious fluctuations，and those in the mid-east and across north and south are high quality. The service level of logistics corridor of Yangtze River and coastal areas are low，the reason of which is，they mainly depend on water transport，because freight railways are not through. Secondly，the author tests and verifies the regional economic agglomeration effects and spatial spillover effects of China's logistics corridor.My research shows，see from the national scope，China's logistics corridor has significant effects of regional economic agglomeration and spatial spillover effects，but in particular，each one is different. In terms of its regional economic agglomeration effects，while the logistics corridor variables added in the model，the density effects，size effects and structure effects of the regional agglomeration effects reduce in various degrees. During the study period，the scale effects and density effects of the logistics corridor in the middle of west and those across the west and east are more obvious，and the structural effects of those starting earlier and being more perfect are more prominent as well. In terms of spatial spillover effects logistics corridors，parts of them have spatial spillover effects. The logistics corridors in coastal areas，JingJiu，Yangtze River，Longhai-Lanxin and HuKun have significant spatial spillover effects.However，the spatial lag effects of those in JingHu，JingGuang and BaoKun are not significant，and there are no spillover effects in the study period，but the direct effects are remarkable. Thirdly，the author calculates the spatial economic connection scope along the logistics corridor in China.The study shows that the logistics corridor can help central cities build stable economic relationships with other cities along the line，and expand the spatial economic connection scope，which can reach more than 300 km and even 1000 km.At last，the evolution of regional spatial structure under the influence of logistics corridor is simulated. The conclusion shows China's logistics corridor has changed its regional spatial structure，resulting from the regional economic agglomeration effects，spatial spillover effects and its direct driving force. Meanwhile，the evolution characteristics are different in different regions. In the early，the regional spatial structure is dominated by block shape，and in recent years，it changes to banded shape locally. Those regional spatial structures of the logistics corridors in the west and those across the mid-west and north are mainly the shape of block，while in the east and south，it is the local banded shape which is conductive to the formation and development of regional economic integration.

The last part is counter measures research.Based on the above theoretical and empirical research results，the author puts forward some counter measures and suggestions，such as putting emphasis on the investment and construction of the logistics corridor according to local conditions，improving the structure of its transport main lines，paying more attention to regional special effects of logistics corridor to elevate the formation of economic growth axis，focusing on the important support of the role of logistics corridor in the regional economic integration and regional balanced development strategies.

Key words：Logistics corridor，regional spatial effects，regional economic agglomeration effects，spatial spillover effects，the evolution of regional spatial structure