The protection of water resources ecological environment is one of the most important task in watershed in China. The evaluation of water resources carrying capacity (WRCC) is the foundation of suitability of territorial space development. It is necessary to further analyze the weaknesses of coordinated development of various dimensions of WRCC and explore the basis of territorial space development and optimization. This paper considers 中国特有的政策任务， namely, "three water management together", the types of development priority zones, "red lines" control, and national spatial suitability evaluation, to construct the evaluation index system of WRCC. Monomial evaluation, integrated evaluation and coupling coordination analysis method are used separately to evaluate the carrying index, comprehensive carrying index and coupling coordination degree of WRCC in Qingjiang River Basin.The results show that :(1) as far as monomial evaluation is concerned, water resources supply is often overloaded on the overall economy, industrial and agricultural development;(2)the comprehensive index of WRCC of the counties in the southwest is obviously better than that of the counties in the northeast;(3) the degree of coupling coordination of water resources carrying in the Qingjiang River basin is not high, which is basically in the primary coordination or barely coordination;(4) the short board of water resources in the Qingjiang River basin presents obvious spatial characteristics, which from west to east are respectively water environment, water resources and water ecology lagging. This paper measures WRCC for industry, agriculture, life and ecology, which is helpful to promote the suitability evaluation of land space development. Meanwhile, the case study of Qingjiang River Basin provides reference for other regions to implement the "double evaluation".
Yujie Wei, China University of Geosciences (Wuhan), China
Ran Wang, China University of Geosciences (Wuhan), China
Jinhua Cheng, China University of Geosciences (Wuhan), China