渝东北盆缘山区土地利用时空分异特征——以巫溪县为例  

Characteristics of land use spatiotemporal differentiation in basin-edge mountainous areas in northeast Chongqing:a case study from Wuxi county

作　　者：李俊 谢晓议 项祥 李䶮 钱溢 LI Jun;XIE Xiaoyi;XIANG Xiang;LI Yan;QIAN Yi(Chongqing 208 Institute of Geological Environment Co.,Ltd.,Chongqing 400700,China;Chongqing 136 Geological Team,Chongqing 401147,China)

机构地区：[1]重庆市二零八地质环境研究院有限公司,重庆400700 [2]重庆一三六地质队,重庆401147

出　　处：《甘肃科学学报》2024年第5期64-69,共6页Journal of Gansu Sciences

摘　　要：地处盆缘山区的巫溪县,其土地覆被呈现出深山峡谷和低丘平坝相间的地貌展布特征。在全国土地调查年末更新数据分析的基础上,分别将2016年和2021年末的地类划分为草地、城乡用地、耕地、工矿用地、林地、水域和未利用地七大类型。使用土地利用动态度和土地利用转移矩阵方法分析了县域的土地结构类型变化情况,引用土地利用程度综合指数来度量巫溪县土地利用程度的高低。结果表明:巫溪县草地面积在2016—2021年减少最多,且每年动态变化速度最快;耕地虽然受政策保护,但仍在向城乡建设用地转移;县域土地利用程度高的地块已开发为城乡用地,面积约0.021 km^(2);驱动土地利用类型转移的因素中,社会经济因素影响程度最高。Located in the basin-edge mountainous areas,Wuxi county has a land cover characterized by alternating deep mountain canyons and low hills and flat dams.Based on the analysis of year-end updated data from the national land survey,the land types at the end of 2016 and 2021 were divided into seven major types:grassland,urban-rural land,cultivated land,industrial and mining land,forest land,water area,and unused land.The dynamic degree and conversion matrix method of land use were used to analyze the changes of land structure types in the county.The comprehensive index of land use degree was used to measure the level of land use in Wuxi county.The results show that the grassland area in Wuxi county decreased the most from^(2)016 to 2021 and had the fastest annual dynamic change rate.Although cultivated land is protected by policy factors,it is still being transferred to rural-urban construction land.The land with high land use level in the county has been developed into rural-urban land,with an area of approximately 0.021 km^(2).Among the factors driving the transfer of land use types,socio-economic factors have the highest degree of influence.

关 键 词：土地利用变化 土地利用程度 驱动因素 巫溪县 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]