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[1]YU Shi-wei,CHEN He,ZENG Rong,et al.Eco-regionalization Based on Quantitative Method and Case Study[J].Research of Soil and Water Conservation,2010,17(04):247-251,257.

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Eco-regionalization Based on Quantitative Method and Case Study

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 04 Page number: 247-251,257 Column: Public date: 2010-08-20

Title:: Eco-regionalization Based on Quantitative Method and Case Study

Author(s):: YU Shi-wei, CHEN He, ZENG Rong, YANG Zhi-feng; State Key Laboratory of Water Environmental Simulation, School of Environment, Beijing Normal University, Beijing 100875, China

Keywords:: eco-regionalization; quantitative method; principal component analysis; hierarchical clustering method

CLC:: X32;Q149

DOI:: -

Abstract:: A literature review provided a thorough look at eco-regionlization.The analysis has shown that the primary methods used in eco-regionalization are qualitative,and the selection of experts has great influence on results.Therefore,quantitative method was needed.This paper explored quantitative methods to improve two major features of eco-regionalization.Principal component analysis was applied to the selection of relevant regional environmental factors,as well as hierarchical clustering method in boundary determination.The eco-regionalization of Liao River basin was taken as a case study.Four factors including rainfall,altitude,vegetation,and soil type were chosen for the delineation process.Three ecoregions of GradeⅠ,and nine ecoregions of GradeⅡwere delineated within Liao River basin.This paper was intended to provide an appropriate framework for environmental research,assessment,monitoring,and management using improved ecoregionlization method.

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