市域尺度下甘肃省耕地变化的区域差异研究

Study on the Regional Differences of Cultivated Land Change in Gansu Province Under the Municipal Scale

以甘肃省2009—2016年市域单元的年末耕地面积为基础,计算相对变化率、年耕地变化动态度,采用定性加定量的研究方法,运用ArcGIS空间分类技术呈现耕地面积变化快慢的空间分异特征,并对甘肃省各个市域单元的耕地面积变化差异及其原因进行探索和研究,研究结果表明:1)2009—2016年甘肃省人均耕地面积远大于全国平均水平,且人均耕地面积数量基本稳定;2)2009—2016年甘肃省耕地面积净增72540 hm^(2),相对变化率2.08%,其耕地数量平稳增加;3)甘肃省耕地面积变化快慢程度有所不同,张掖市年耕地变化动态度高达2.473,耕地数量快速上升。耕地变化区域差异的研究为进一步探索其农业协调稳定的发展打下了坚实基础。

Based on the cultivated land area in all urban units of Gansu province from^(2)009 to 2016,this paper calculates the relative rate of change,the cultivated land change in attitude,using qualitative and quantitative research methods.Using ArcGIS space classification techniques in spatial differentiation characteristics of cultivated land change speed,cultivated land area change difference of each area in Gansu province and the reasons were explored and studied.The results showed that:(1)Arable land area per capita is greater than the national average level,and cultivated land quantity per capita is basically stable in Gansu province from^(2)009 to 2016;(2)From^(2)009 to 2016,the cultivated land area of Gansu province increased by 72540 hm^(2),with a relative change rate of 2.08%,and the cultivated land quantity increased steadily;(3)The cultivated land area in Zhangye city has a high dynamic attitude of 2.473,and the cultivated land quantity is rising rapidly.The study of regional difference of cultivated land change lays a solid foundation for further exploring the coordinating and stable development of its agriculture.