1970~2020年黄河流域菏泽段LUCC时空演化及驱动力分析

Spatiotemporal Evolution and Driving Forces Analysis of LUCC in the Yellow River Basin of Heze Section from 1970 to 2020

利用ArcGIS提取LUCC类型,采用LUCC动态度、LUCC转移矩阵和驱动因素主成分分析法,对研究区域1970~2020年LUCC的时空变化特征及驱动因素进行分析研究.结果表明:单一LUCC自大到小为耕地、建设用地、水域、林地、草地和未利用土地,建设用地动态度为正值,呈增加趋势,各类用地间互相转化活跃;经济加速发展、城镇化进程的加快,产业结构调整和居民生活水平提高,是驱使LUCC结构发生变化的主要因素.

Using ArcGIS to extract LUCC types,this study analyzes the spatiotemporal characteristics and driving forces of LUCC in the study area from 1970 to 2020 using LUCC dynamic degree,LUCC transfer matrix,and principal component analysis of driving factors.The results show that the single LUCC types from largest to smallest are arable land,construction land,water area,forest land,grassland,and unused land,with only construction land showing a positive dynamic degree trend,indicating an increasing trend.Various types of land are actively converting among each other.The main factors driving the changes in LUCC structure are the accelerated economic development,the faster urbanization process,industrial structure adjustment,and improvement in residents’living standards.