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科研成果详情

Effects of the Land Use Change on Ecosystem Service Value in Chengdu, Western China from 1978 to 2010

作者:Wen F. Peng,Shu Y. Fan,Cun J. Yang

        Analysis of the ecosystem service value (ESV) as sociated with the observed land use changes is critically im-portant for environmental assessment and sustainable urban development. This research evaluate the effects of land use on ESV in Chengdu based on remotely sensed data and GIS assessment model, transfer and flows model, sensitivity and variableratio function. The results showthatthe ESVismainly composed of forest land and cultivated land. ESV substan-tially and continuously decreased by 92×10 8 Chinese Yuan (CNY) or about 45 % in Chengdu during the study period and ESV from urban areas in the city center and its surroundings were much lower than those from the natural landscape in the northern and western Longmenshan mountainous region. Land use changes were the major causes of the observed transfer and flows in ESV. The flows of ESV both positive and negative were associated with observed land use changes, but overall land use changes had a negative impact on ESV. The results further indicate that the coefficient change relative totheESVwasinelastic,andthe relativesensitivityindexwas as follows: forest land > cultivated land > water areas, but changes in water area had the largest influence and amplification effect on the ESV. This research offers important insights for use in planning fast urbanizing regions and can assist toachieve more sustainable land use and policy making.

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