绿洲耕地动态变化分析——以昌吉州为例

Analysis of Oasis-Taking Changji as an Example

以昌吉州2000、2010、2018年三期的土地利用数据作为数据源,利用GIS空间分析提取三期耕地动态变化数据,从时间和空间上分析昌吉州耕地变化动态度。结果表明,耕地总量从2000-2018年整体上呈现增加趋势,昌吉州木垒县近20年的耕地变化呈负增长,其余县市耕地呈正增长。近20年来阜康市和呼图壁县的耕地变动最为剧烈,超过全州的耕地动态变化度。第二阶段耕地变化动态度集中且剧烈,耕地大量增加和耕地减少的情况普遍存在,耕地大量增加主要集中在绿洲北部。

Taking the land use data of Phase Ⅲ in 2000,2010 and 2018 in Changji Prefecture as the data source,GIS spatial analysis was extracted from the dynamic change data of cultivated land in Phase Ⅲ,and the changing attitude of cultivated land in Changji Prefecture was analyzed in time and space.The results showed that the total amount of cultivated land showed an increasing trend from 2000 to 2018,the change of cultivated land in Muei County of Changji Prefecture showed negative growth in the past 20 years,and the cultivated land in other counties and cities showed positive growth.In the past 20 years,the cultivated land in Fukang City and Hu Tubi County has changed the most violently,exceeding the dynamic change degree of cultivated land in the whole prefecture.In the second stage,the change attitude of cultivated land is concentrated and drastic,and the large increase of cultivated land and the decrease of cultivated land are common.The large increase of cultivated land is mainly concentrated in the north of the oasis.