摘要
该文以Landsat TM遥感影像为主要数据源,获取了宁夏中卫市沙坡头区1992年和2007年的土地利用信息;利用单窗算法反演了对应时期该区域的地表温度(LST);据此分析了土地利用变化与地表温度变化之间的关系。结果显示:1)不同利用方式的土地的LST有显著差异,流动沙地的LST最高,其次是固沙用地、草原化荒漠等;2)过去15a间,研究区内最为明显的土地利用变化方向是"草原化荒漠转变为农田"和"流动沙地转变为固沙用地";3)"草原化荒漠转变为可灌溉农田"会导致LST明显下降,"草原化荒漠转变为压砂田"则会导致LST稍上升;4)"农田转变为城乡建设用地"会导致LST明显上升。
Spatial distribution of land surface temperature（LST） was demonstrated to be likely influenced by land use changes. This paper aimed to analyze the influence of land use change on LST in Shapotou District,Zhongwei. Using two images of Landsat TM,the information of land use of Sapotou in 1992 and 2007 were retrieved and LST of corresponding periods was calculated based on the mono-windows algorithm. The results revealed that there was obvious difference among LST of each land types. Shifting sandy land had the highest LST,and water area the lowest. The conversions of steppe desert to cropland and shifting sandy land to artificial vegetation-stabilized sand land were the major patterns of land use change. The conversions of steppe desert to irrigable cropland resulted in LST declining obviously,and the conversions of steppe desert to pebble-covered cropland resulted in LST rising slightly. The conversions of cropland to rural-urban construction land resulted in obvious LST rise.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2010年第11期310-316,386,共8页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家自然科学基金(30770387
41071280)
南阳师范学院高层次人才科研启动项目(QI2010)
