关键词: 乡村三生空间功能, 耦合协调, 时空特征, 格局演化, 重庆市

Abstract:

The production space function, living space function and ecological space function promote and restrict each other; the complex relationship among the three functions is the major cause of the development and evolution of production-living-ecological space in rural areas. The coordinated and mutual development of the rural production-living-ecological space function is one of the most crucial issues in the current process of spatial restructuring in rural China. In this study, we established an index system for rural production-living-ecological space function with the production-living-ecological space theory in territorial space planning, based on the fact that a coupling coordination model was built. Therefore, after quantitatively calculating the coupling degree and coupling coordinate degree (2005, 2010, and 2015) of 37 districts and counties in Chongqing, we conducted spatial comparison and temporal analysis, the results are shown as follows. There were four types of coupling degree (low level coupling type, moderate level coupling type, break-in coupling type and coordination coupling type) and three types of coupling coordination degree (moderate incongruous type, elementary coordination type and moderate coordination type) appeared in rural production-living-ecological space function, which offered implications for calculating the mutual relationship among the three functions. The coupling coordination degree of rural production-living-ecological space function exhibited significant difference spatially and temporally; to be specific, it presented a spatial pattern of "high in the west and low in the east". In the time dimension, it waved from low level to high level coupling. There were obvious differences of coupling coordination status among every two of the three rural space functions. The coupling coordination of "production-living space function" was higher than that of "production-ecological space function" and "living-ecological space function" in the same period, whilst the coupling coordination of "living-ecological space function" had the poorest condition. Thus, living-ecological space function should be the key point for spatial restructuring and it must be proposed firstly in rural areas.

Key words: rural production-living-ecological space function, coupling coordination, spatial-temporal characteristics, structure evolution, Chongqing Municipality