摘要
GIS已成为环境地学研究全球变化的重要手段。以松涛水库流域为例,利用2002年Landsat7和2016年Google Earth高分辨率影像数据,依托ArcGIS和ENVI,应用监督分类结合目视解译得到2002~2016年流域土地利用图,并分析土地利用变化及其驱动因素。结果表明:2002~2016年,土地利用变化呈现出水域、林地和耕地减少,道路、居民点和园地增加的趋势,未利用地则逐渐消失;综合土地利用年变化率为19.24%;土地利用类型转化主要是水域、林地和耕地转化为园地,林地及未利用地转化为居民点和道路,林地和园地互相转化;土地利用结构变化较明显,林地和园地占优势,水域次之;土地利用变化驱动因素主要有自然条件、人口增长以及政策等。
GIS is an important tool for environmental geography to study global change.Based on the data of Landsat7 in 2002 and the Google Earth high-resolution image in 2016,relying on ArcGIS and ENVI,using the supervision classification and visual interpretation method,the land use of Songtao reservoir watershed in 2002 and 2016 were obtained,and land use change and its driving factors were analyzed..The results indicated that the land use change showed the decreasing trend for water,forest land and cultivated land in2002~2016,but increasing trend for road,residential area and garden land,and the unused land was gradually missing in 2016.The annual change rate of comprehensive land use is 19.24%.The land use type conversion is mainly for water,forest land and cultivated land into garden land,forest land and unused land into residential area and road,woodland and garden land transform into each other.The change of land use structure is obvious,forest land and garden land are dominant,the water area is second.The land use change is driven by natural conditions,population growth and government policies.
作者
朱丽蓉
崔乙斌
叶长青
ZHU Lirong;CUI Yibin;YE Changqing(School of Tourism,Hainan University,Haikou,Hainan 570228;College of Ecology and Environment,Hainan University,Haikou,Hainan 570228)
出处
《热带农业工程》
2020年第4期1-5,共5页
Tropical Agricultural Engineering
基金
海南大学教育教学研究项目(No.hdjy1740,No.hdjy1860)
国家自然科学基金(No.51569009)
