黄土丘陵区纸坊沟流域“退耕还林”工程实施后生态足迹变化分析

以黄土丘陵区纸坊沟流域所辖3个自然村农户的调查资料为依据，利用生态足迹理论及模型对该流域生态足迹与生态承载力进行了测算。结果表明，纸坊沟流域退耕还林工程实施前（1999年）生态足迹0．9910hm2／cap，生态承载力0．8926hm2／cap，生态赤字0．0984hm2／cap；退耕还林工程一期结束后（2007年）生态足迹1．0188hm2／cap．生态承载力1．2703hm2／cap，生态盈余0．2515hm2／cap，说明退耕还林丁程的实施已见成效；同时退耕还林一期工程实施前后3个自然村生态足迹顺序并未发生变化，这与其区位特征一致。根据该流域及其3个自然村的发展特点，为实现其可持续发展，应发展商品型生态农业，强化产业与资源的耦合。

Changes of Ecological Footprint After Cropland Conversion to Forest Land Project of Zhifanggou Watershed in Loess Hilly and Gully Region

Ecological footprint theory and model have been applied to calculate the ecological footprint and ecological capacity,according to the investigation on the three natural villages of Zhifanggou watershed in the loess hilly and gully region.Before the implementation of cropland conversion to forest land project,the ecological footprint was 0.991 0 hm2/cap,the ecological capacity was 0.892 6 hm2/cap,and the deficit was 0.098 4 hm2/cap(1999).After the first stage project(2007),the ecological footprint was 1.018...