区域耕地压力指数时空变化规律研究

Temporal and Spatial Variation of Cultivated Land Pressure Index in a Region

运用耕地压力指数模型,对2003—2012年吉林省耕地利用压力指数时空分异的特征以及动态变化进行分析.结果表明:随着时间的推移,吉林省耕地和人口不断增加,但最小人均耕地面积的增加幅度越来越小,几乎开始处于平衡状态.人口数量增加导致大量耕地转换为建设用地,使得耕地压力指数不断上涨.

Using the model of cultivated land pressure index, the characteristics and dynamic changes of spatial and temporal variability of cultivated land use pressure index in Jilin Province during 2003 - 2012 were analyzed. The results showed that with the increase of cultivated land and population in Jilin Province, the increase of the minimum per capita cultivated land area is getting smaller and smaller, almost at e-quilibrium. The increase in population led to the conversion of a large amount of arable land to construction land, making the arable land pres-sure index rising.