Environmental quality assessment of regional agro-ecosystem in Loess Plateau

Abstract

Abstract: Based on the detection and analysis of the contamination status of agro-ecosystem with apple-crops intercropping as the dominant cropping model in Loess Plateau,the individual factor and comprehensive environmental quality were assessed by multilevel fuzzy synthetic evaluation model,analytical hierarchy process(AHP),and improved standard weight deciding method.The results showed that the quality of soil,water and agricultural products was grade Ⅰ,the social economical environmental quality was grade Ⅱ,the ecological environmental quality was grade Ⅲ,and the comprehensive environmental quality was grade Ⅰ.The regional agro-ecosystem dominated by apple-crops intercropping was not the best model for the ecological benefits,but had the better social economical benefits.

CLC Number:

S181

WANG Limei, MENG Fanping, ZHENG Jiyong, WANG Zhonglin . Environmental quality assessment of regional agro-ecosystem in Loess Plateau[J]. Chinese Journal of Applied Ecology, 2004, (3): 425-428.

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