GEOGRAPHICAL RESEARCH ›› 2012, Vol. 31 ›› Issue (11): 1929-1940.doi: 10.11821/yj2012110001

• Earth Surface Processes •     Next Articles

Measure model for ideal region and real status of watershed sustainability

GUO Huai-cheng1, GAO Wei1, WANG Zhen2, CHEN Qiong3,4, YI Xuan1, XIANG Nan1, ZHOU Feng4   

  1. 1. Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China;
    2. School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China;
    3. College of Life and Geography Sciences, Qinghai Normal University, Xining 810008, China;
    4. Laboratory for Earth Surface Process, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
  • Received:2012-04-15 Revised:2012-07-02 Online:2012-11-10 Published:2012-11-10

Abstract: Sustainable development is a widely accepted developing mode all over the world, but its vogue concept and simplified measure model hinder the practice of this idea.It is urgent to present a clear definition of this significant thought and propose a better assessment model.The concept of watershed sustainability and its ideal region are presented based on the relationship among the economic, social and aquatic ecological subsystems confined by each threshold.Besides, temporal scale, spatial scale, cognitive level, game relationship between different subsystems, and feasible interval are reckoned as the main factors in defining watershed sustainability.Considering the relationship between inside and outside watershed, an assessment model of sustainability on account of optimum programming is suggested to measure the gap between real status of an ideal region.The result indicates that the method is more effective and practical than in watershed scale, which provides a new idea and method for sustainability assessment.

Key words: sustainability, watershed system, measurement, assessment, threshold, aquatic ecological health