Dynamic Mechanisms for Evolution of Mountain Rural Settlements and Soil Conservation in Upper Yangtze River Basin

作     者：WANG Qing CHEN Yong 

作者机构：School of Environment and Resource Southwest University of Science and Technology Mianyang 621010 Sichuan China Institute of Environment and Regional Development Sichuan University Chengdu 610064 Sichuan China 

出 版 物：《Wuhan University Journal of Natural Sciences》 (武汉大学学报（自然科学英文版）)

年 卷 期：2007年第12卷第4期

页      面：710-714页

学科分类：12[管理学] 1204[管理学-公共管理] 

基　　金：the Key Social Research Project of Education Ministry (04JZD0010) 

主　　题：rural settlement entropy soil conservation project intercepted flow 

摘      要：This paper presents the logic relationship between rural settlement reconstruction and soil conservation in the Upper Yangtze River. Firstly, by introducing the concepts of ＂flow＂ and ＂intercepted flow＂, we probe into the dynamic mechanism on interaction between ecological and environmental system, and then point out that the ＂intercepting sites＂ are physical conditions for establishment of human settlements in mountains. Secondly, by using ecological theories, ＂flow＂, ＂source＂, and ＂sink＂, material cycle and energy flow in mountains have been discussed. Thirdly, according to dissipative structure theory and thermodynamic laws, a hypothesis has been proposed that ＂entropy flow＂ is a dynamic force for settlement evolution. Finally, it is argued that a project for soil conservation is set to control and utilize flows so rural settlements can be supported and farmers＇ life improved.