JOURNAL OF NATURAL RESOURCES ›› 2012, Vol. 27 ›› Issue (3): 382-393.doi: 10.11849/zrzyxb.2012.03.004

• Resources Ecology • Previous Articles     Next Articles

River Ecosystem Response of Impervious Surface in River Network City: A Framework of Methodology

ZHAO Jun, SHAN Fu-zheng, XU Yun-feng, QIAN Guang-ren   

  1. Department of Environmental Science and Engineering, Shanghai University, Shanghai 200444, China
  • Received:2010-12-16 Revised:2011-11-15 Online:2012-03-20 Published:2012-03-20

Abstract: The rapid expanding of impervious surface in river network city has became a more and more important factor effecting the river ecosystem health, so understanding the pressure response relationship between the impervious surface and river ecosystem is of fully necessary. The international research history of impervious surface and its effect on river ecosystem has already past 40 years, and perfect theory and method system has already established, however, our current research is still at its initial stage. Focusing on overseas research, this paper reviews the main advances of impervious surface as the following three aspects: firstly the identification technical approach of impervious surface, then the pressure response relationship between river basin impervious surface and river ecosystem conditions, finally the application of impervious surface threshold in river basin land use planning regulation and river management, in particular a detailed analysis on the threshold effect of impervious surface is summarized in literature from 1960s. From four aspects including the research perspective, research methods, study area and decision-making applications, the current problems in the literature was diagnosed. Considering the special hydro-geomorphic characteristics of river network area, this paper puts forward the main task in river network city, propose methods to solve the key technical issues advanced by the authors, such as the field survey of impervious surface and how to transition it to effective impervious surface, the hydrological units and its multi-scale system, pressure response system, as well as the data analysis methods and so on. Finally, the typical river network city Shanghai was taken as a case, and at riparian scale the relationship between impervious surface and river ecosystem was detected, in which the result showed there was an obvious non-linear relationship. The framework in this paper would be expected to provide methodology references for forwarding empirical investigations.

Key words: impervious surface, river ecosystem response, river network city

CLC Number: 

  • X171.1