生态脆弱区耕地集约利用水平分析

以米脂县高西沟村为例，通过构建耕地集约利用评价指标体系，利用主成分分析方法进行分析，探讨高西沟在实施有效的水土治理措施后，耕地集约利用情况，得出结论：1997—2006年米脂县高西沟村耕地集约利用情况呈波动上升趋势，1999～2001年出现下降趋势，这与当年的自然灾害有关；高西沟村非农指数、单位化肥投入、复种指数和人均纯收入，极大地影响到耕地的集约利用水平，说明农户的经济情况影响高西沟耕地集约利用程度。

An Analysis of Intensive Cultivation in the Ecologically Fragile Area

By setting up the evaluation indicator system for the intensive land cultivation, the intensive use of the land in Gaoxigou Village of Mizhi County has been analyzed by using the principal component method, after the effective implementation of soil conservation measures. The conclusions are made as follows： there has been an in- crease in the intensive use of the land in Gaoxigou Village from 1997 to 2006; and the natural disasters of 1999 to 2001 reversed the rising trend; the intensive cultivation in Gaoxigou Village has been influenced by such indicators as nonagricultural population, unit fertilizer input, index of multiple cropping and per capita income. This shows that the economic situation of a farmhouse could affect the intensity of the land cultivation.