#### Table of Content

28 August 2021, Volume 40 Issue 8
Articles
 Change and influencing factors of China’s cross-regional investment network structure JIAO Jingjuan, ZHANG Qilin, WU Yuyong, JIANG Runze, WANG Jiao'e 2021, 40 (8):  1257-1268.  doi: 10.18306/dlkxjz.2021.08.001 Abstract ( )   HTML ( )   PDF (3942KB) ( )   With the increasing economic interaction between cities, capital flow across regions has gradually become a key factor affecting the regional economic disparities. Cross-regional enterprise investment is regarded as the micro embodiment of capital flows. It is of great significance to explore the characteristics of cross-regional enterprise investment for reducing regional economic disparities. Thus, this study examined the cross-regional investment network using the cross-regional investment data of Chinese listed companies in 1998-2018, and analyzed the characteristics of the spatial evolution of China's cross-regional investment network and its influencing factors at the national and regional levels. The results show that: the spatial agglomeration trend of node centrality in China's cross-regional investment network at the national and regional levels is obvious and the cities with high node centrality are mainly concentrated in the five major urban agglomerations. There are obvious hierarchical structure, spatial heterogeneity, and path dependence of the cross-regional investment network; the net investment inflows and outflows are mainly in the eastern region, and the investment activities tend to develop toward the central and western regions; the influence of city economic development level, industrial structure, and financial environment varies across regions and types of cities with different population scales.
 System dynamics model-based simulation of energy consumption pattern on the two sides of the Huhuanyong Line in China ZHAO Sha, HU Zui, ZHENG Wenwu 2021, 40 (8):  1269-1283.  doi: 10.18306/dlkxjz.2021.08.002 Abstract ( )   HTML ( )   PDF (8100KB) ( )   The Huhuanyong Line is a real portrayal of the spatial pattern of population, economic, and social development in China. It perfectly describes key characteristics of energy production and consumption. Quantitatively simulating the spatial pattern of energy consumption on the two sides of the line can provide a reference to achieve regional coordinated development. This study employed data from the China Energy Statistical Yearbook (2005-2014). We first constructed the System Dynamics Model Based on the Huhuanyong Line Energy Consumption Simulation Model (HLECSM-SD) using the $GM ( 1,1 )$ model and System Dynamics (SD) model. Then, we simulated the pattern of various energy consumptions on the two sides of the line from 2020 to 2025. Finally, this study analyzed energy consumption of China under three scenarios. The results indicate that: 1) The HLECSM-SD model fits the data well. 2) Energy consumption presents the spatial pattern of more in the east and less in the west in China. 3) The change trend of energy consumption growth rate is consistent across the two regions. The east side has a lower growth rate than the west side. 4) On the east side of the line, coal consumption has the characteristics of more in the north and less in the south. This is consistent with the spatial distribution of China's coal resources. The consumptions of petroleum, natural gas, and electricity all have the characteristics of more in the east and less in the central region. This is determined by many factors, such as resource endowment, economic development, population scale, and industrial structure of each province. 5) The influencing factors have different degrees of impact on energy consumption under different scenarios. Our findings can provide some reference for the macro decision making in the energy field.
 Tourism eco-efficiency at the provincial level in China in the context of energy conservation and emission reduction GUO Lijia, LI Chang, PENG Hongsong, ZHONG Shi'en, ZHANG Jinhe, YU Hu 2021, 40 (8):  1284-1297.  doi: 10.18306/dlkxjz.2021.08.003 Abstract ( )   HTML ( )   PDF (4139KB) ( )   The study on the evaluation and spatial pattern of tourism eco-efficiency is an important basis for revealing the quality and state of tourism development at the provincial level in China. Based on a bottom-up approach to calculate tourism energy consumption and carbon emissions at the provincial level in China, this study used the Super-SBM (slacks-based measure) model, Malmquist index, and exploratory spatial data analysis to explore the spatial differentiation, convergence, and correlation patterns of tourism eco-efficiency at the provincial level in China in the context of energy conservation and emission reduction. The results show that: 1) Tourism energy consumption and carbon emissions generally show an inverted U-shaped trend that first increases and then decreases, which supports the environmental Kuznets curve (EKC) hypothesis. 2) The overall tourism eco-efficiency shows a fluctuating growth trend, and has great growth potential. Pure technical efficiency drives the optimized development of eco-efficiency. 3) At the provincial and regional scales, tourism eco-efficiency presents a spatial differentiation pattern, but tends to convergence and reach balanced development. 4) Tourism eco-efficiency presents a positive spatial correlation pattern from strong to weak, and its development model is dominated by low-low agglomeration, followed by low-high agglomeration, and the spatial agglomeration model needs to be optimized. All provinces and regions should take the areas with higher eco-efficiency as the benchmark, and realize the coordinated development of tourism with high quality by means of factor flow, scale effect, technological progress, and environmental regulation.
 A factor-based theoretical analysis of urban-rural relationship change DU Guoming, LIU Mei 2021, 40 (8):  1298-1309.  doi: 10.18306/dlkxjz.2021.08.004 Abstract ( )   HTML ( )   PDF (3195KB) ( )   Urban-rural integration is an important support for the implementation of the new urbanization strategy and the rural revitalization strategy, while the reasonable flow and optimal allocation of urban-rural elements are the keys to the change of urban-rural relationship and urban-rural integration. Based on the theory of urban-rural regional system, this study examined the essence and connotation of urban-rural relationship from the perspective of elements, clarified the stages and general features of urban-rural relationship change, and then put forward its regulatory mechanism. The main conclusions are as follows: 1) Urban-rural relationship is the concentrated embodiment of urban-rural population relationship, land relationship, and economic relationship. The foundation of urban-rural relationship is the functional differences and complementarity between them and the representation is the flow of urban and rural elements. 2) The pattern of the development of urban-rural relationship is from differentiation to integration. Its evolution process can be generally divided into four stages: urban-rural differentiation, urban-rural opposition, urban-rural integrated development, and urban-rural integration. There are clear differences in the type, direction, ways, intensity, and degree of freedom of urban and rural element flow in different periods and regions. 3) Under the effect of economic mechanism and political mechanism, the flow of various elements constantly promotes the evolution of urban-rural relationship. The adjustment of urban-rural relationship should also continually improve and optimize the economic and political mechanisms.