基于改进熵值法的耕地利用集约度时空变异研究——以河北省武安市为例

Study on Spatial-temporal Differences of Using the Cultivated Land Based on Entropy

结合河北省武安市的实际情况,建立了合理的耕地集约利用评价指标体系,并采用改进的熵值法,对其耕地集约利用状况进行了时空分析。研究结果表明：①1997~2008年间,将武安市耕地集约利用水平分为了3个阶段,1997~1998年、2004~2008年呈波动上升阶段以及1999~2003年呈持续下降阶段。②耕地集约利用的总体水平不高,大部分在0.5以下。从地域来看,东部较高,西部较低。

The evaluation index system of intensive use of arable land was established in view of the actual situation of Wu＇an city.The intensive utilization of land condition was analysed using the improved entropy method.The results showed that the intensive use of cultivated land could be divided into three stages from 1997 to 2008.The first from 1997 to 1998 and the third from 2004 to 2008 were increased volatility and the other from 1999 to 2003 was continued to decline.With respect to every village,The overall level of intensive use of the eastern part of cultivated land was not high and most of below 0.5 and the eastern was higher and western was lower from the geographical point of view.