干旱荒漠区土地利用变化对地表温度的影响  

Influence of land use change on land surface temperature in arid desert region

作　　者：戚鹏程[1] 赵传燕[2] 冯兆东[3,4] 王小平[5] 

机构地区：[1]南阳师范学院环境科学与旅游学院,南阳473061 [2]兰州大学干旱与草地生态教育部重点实验室,兰州730000 [3]兰州大学资源环境学院,兰州730000 [4]美国Baylor大学地质系,韦科tx76798 [5]中国气象局兰州干旱气象研究所,兰州730000

出　　处：《农业工程学报》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)

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.

关 键 词：地表温度 土地利用 干旱荒漠 单窗算法 LANDSAT TM 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置] S161[自动化与计算机技术—控制科学与工程]