一种度量耕地质量的新方法——以河北省沽源县为例

土地质量是土地自然属性的综合，是影响土地的自然因素的集中反映．不仅包括土壤的理化性质，还包括降水等气候条件．在明确土地质量的概念后，以耕地为例，定量研究耕地质量．从耕地的生产功能出发，将耕地的产出看作是耕地质量和劳动力投入、资本投入共同作用的结果．根据量纲分析方法，得到耕地质量的定量计算方法．收集河北省沽源县1996年至2006年的数据，计算当地耕地质量指数．结果表明，耕地质量指数能较好的反映耕地质量变化情况．最后用生产函数模型对该方法进行检验，证明该方法的合理性．

A New Method of Measuring Cultivated Land Quality——A case study of Guyuan county

When discussing driving factors, which cause change of cultivated land, unit yield usually considered as. a index. Unit yield is the result of many factors. It has some relation to cultivated land quality, but not identical. The value of cultivated land can de divided into four part, cultivated land quality, cultivated land area, the number of labour, fund. And they are independence of each other. Cultivated land quality is the integration of natural quality of cultivated land. Dimensional analysis is a physical analysis method, which consider physical quantities have form ofmonomial and power. collecting social and economic data, using dimensional analysis, cultivated land quality index was gotten.