摘要
以赤水河流域为研究对象,基于数字高程模型数据,利用移动窗口法和均值变点法提取出最佳地形起伏统计单元,在此基础上结合2000年、2010年、2015年、2020年4期土地利用数据,分析了坡地土地利用数据在不同起伏区间的空间分布与时空变化特征。结果表明:赤水河流域最佳地形起伏度统计窗口为12×12,窗口面积为0.1296 km^(2),小起伏区和微起伏区是主要的起伏类型,其面积百分比分别为68%、17.5%;坡耕地和坡林地是流域主要的土地利用类型,20年间坡耕地和陡坡耕地下降显著,林地、建设用地呈上升趋势;水域面积保持稳定。
This study takes the Chishui River basin as the study object and extracts the optimal relief statistical unit by using the moving window method and the mean change point methodbased on the digital elevation model data.Then it analyzes the spatial distribution and spatiotemporal variation characteristics of the land use data in different relief regions by combining the land use data in 2000,2010,2015 and 2020.The results show that the optimal relief statistical window of Chishui River basin is 12×12,and the window area is 0.1296 km^(2).Small relief area and small relief area are the main relief types,and their area percentages are 68%and 17.5%respectively.Slope cultivated land and slope woodland are the main land use types in the basin.Both cultivated land and unused land showed a decreasing trend during the past 20 years,especially the slope cultivated land and steep slope cultivated land,while forest land and construction land showed an increasing trend.The water area remains stable.The land use types of the sloping land in the study area are mainly concentrated in the slightly undulating area and the small undulating area.
作者
唐敏
蔡宏
尹枷愿
TANG Min;CAI Hong;YIN Jiayuan(School of Mining,Guizhou University,Guiyang 550025,China)
出处
《测绘地理信息》
CSCD
2023年第2期127-132,共6页
Journal of Geomatics
基金
贵州省科技计划项目(黔科合基础[2016]1028)。
