JOURNAL OF NATURAL RESOURCES ›› 2021, Vol. 36 ›› Issue (9): 2350-2367.doi: 10.31497/zrzyxb.20210913

• Method Innovation for Territorial Space Security Planning • Previous Articles     Next Articles

Territorial space function quality evaluation and coupling coordination analysis in typical karst areas of Southwest China: A case study of Guangnan county

LI Si-nan1(), ZHAO Xiao-qing1(), PU Jun-wei2, WANG Qian1, MIAO Pei-pei1, TAN Kun1   

  1. 1. College of Earth Science, Yunnan University, Kunming 650500, China
    2. Institute of International Rivers & Eco-security, Yunnan University, Kunming 650500, China
  • Received:2020-07-06 Revised:2020-11-12 Online:2021-09-28 Published:2021-11-28
  • Contact: ZHAO Xiao-qing;


Urban function, agricultural function, and ecological function make up the entire territorial spatial function system. Scientifically grasping the quality of regional territorial spatial functions and deeply revealing their coupling coordinated relationships is an important basis for achieving sustainable development of territorial space. In order to explore the development status of territorial spatial functions in karst areas of Southwest China and their characteristics of spatial structures, Guangnan, a typical karst county, was taken as a study area. Based on the construction of urban, agricultural, and ecological function evaluation index systems, the paper evaluated the function quality and its spatial characteristics with the help of comprehensive evaluation method and exploratory spatial data analysis method, used coupling coordinated degree model to examine the coupling coordinated status of territorial spatial functions, and further explored the territorial space development of coordinated development of urban-agricultural-ecological functions. The results showed that: (1) The urban function quality and agricultural function quality showed mainly low values, and the ecological function quality had mainly high values. The low and high values of comprehensive function quality tended to be evenly distributed. And the spatial distribution of different functional qualities was different. (2) The development of all the four territorial spatial function qualities had a positive correlation, which was mainly "high-high" and "low-low" agglomerations, and there were differences in geographical distribution. (3) Territorial spatial functions in karst areas had a great influence on each other, and the distribution of low- and high-coupling areas was significantly different. Of all the functions, the coupling degree was the lowest in the fuction of construction land. (4) The coupling coordinated relationship of territorial space functions could be divided into four levels from imbalance to coordination, and the differences in their spatial distribution were similar to the differences in the territorial spatial comprehensive function quality. The countermeasures of territorial space coupling coordination areas could effectively promote the sustainable development of territorial space for karst areas, and improve the territorial space function quality in karst areas. The results of this research provide references for territorial spatial balanced development and optimized regulation in karst areas of Southwest China.

Key words: territorial space, evaluation of functional quality, coupling coordination, karst areas, Guangnan county