PROGRESS IN GEOGRAPHY ›› 2012, Vol. 31 ›› Issue (7): 933-940.doi: 10.11820/dlkxjz.2012.07.012

• Original Articles • Previous Articles     Next Articles

Evaluation for Regional Ecological Sustainability Based on PSR Model: Conceptual Framework

PENG Jian1,2, WU Jiansheng1,2, PAN Yajing1,2, HAN Yinan1,2   

  1. 1. Laboratory for Earth Surface Processes, Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;
    2. Key Laboratory for Environmental and Urban Sciences, School of Urban Planning and Design, Shenzhen Graduate School, Peking University, Shenzhen 518055, China
  • Received:2012-01-01 Revised:2012-05-01 Online:2012-07-25 Published:2012-07-25

Abstract: The sustainability of regional development is an important basis of the paradigm of sustainable development, and ecological sustainability is the prerequisite and viable approach for the realization of regional sustainable development. However, it is still in great need of a widely accepted decomposition framework for the system targets of ecological sustainability. Meanwhile, along with global urbanization and industrialization, there is an accelerating human influence on natural ecosystems, and the researches on ecosystem health, ecological risk, ecological security and ecological sustainability have been the main hotspots of macro ecology, although most of the evaluation indexes are the same. Therefore, the research reported in this paper aimed to analyze the relationships among the concepts mentioned above. And then, based on the pressure-state-response (PSR) model, a new evaluation framework for regional ecological sustainability was constructed through such three aspects as ecological risk, ecosystem health and capability for ecological sustainability, which was of obvious ecological implication. In the end, detailed discussion was conducted on the evaluation models, the thresholds and weights of evaluation indexes. The results show that comprehensive index evaluation was the primary method, and that there were no absolute evaluation standards. The ultimate target of evaluation for regional sustainable development was not to judge the sustainability of natural ecosystems in a certain period of time, but to measure the temporal change and spatial differentiation of the sustainability status.

Key words: conceptual framework, ecological risk, ecological security, evaluation for regional ecological sustainability, PSR model