摘要
利用2000年和2017年两期土地利用矢量数据,对党河流域土地利用变化进行统计分析。结果表明,党河流域土地总面积4609216 hm^(2),未利用地占比59.89%,建设用地、耕地占比不足1%;17年间,各地类之间均有互相转移,未利用地、牧草地分别减少630063、143310 hm^(2),林地、湿地、耕地、建设用地分别增加614915、150284、6338、1836 hm^(2);耕地稳定性最高,其次是未利用地,建设用地和牧草地稳定性差,保存率分别为76.85%、69.34%、33.33%和34.77%。
Based on the vector data of land use in 2000 and 2017,the land use change in Dang River basin was analyzed statistically.The results showed that the total land area of Dang River basin was 4,609,216 hm^(2),and the unused land accounted for 59.89%,and the construction land and cultivated land accounted for less than 1%.In the past 17 years,there were mutual transfers between different regions.The unused land and grassland decreased by 63,063 and 143,310 hm^(2)respectively,and the forest land,wetland,cultivated land and construction land increased by 614,915,150,284,6,338 and 1,836 hm^(2)respectively.Arable land has the highest stability,followed by unused land,construction land and grassland have poor stability,and the preservation rate is 76.85%,69.34%,33.33% and 34.77% respectively.
作者
李珍存
杨宇翔
张华堂
赵万奎
赵方圆
王琼芳
LI Zhencun;YANG Yuxiang;ZHANG Huatang;ZHAO Wankui;ZHAO Fangyuan;WANG Qiongfang(Gansu Provincial Bureau of Ecological Environment Monitoring and Supervision,Lanzhou 730020,China)
出处
《甘肃林业科技》
2020年第4期25-28,共4页
Journal of Gansu Forestry Science and Technology
基金
甘肃省林业和草原局2019年林业科技创新与国际合作项目。
关键词
党河流域
土地利用
变化
Dang River basin
land use
dynamic
