温度反演和植被供水指数的农田灌溉面积提取  

Extraction of farmland irrigated area based on temperature inversion and VSWI

作　　者：何娇娇[1,2] 刘海新[2,3] 张安兵[2,3] 王贺封[2,3] 刘新侠[2,4] 

机构地区：[1]河北工程大学地球科学与工程学院,河北邯郸056000 [2]河北省煤炭资源综合开发与利用协同创新中心,河北邯郸056000 [3]河北工程大学矿业与测绘工程学院,河北邯郸056000 [4]河北工程大学水电学院,河北邯郸056000

出　　处：《测绘科学》2017年第5期50-55,共6页Science of Surveying and Mapping

基　　金：河北省自然科学基金项目(D2015402134);河北省高等学校科学技术研究青年基金项目(QN2014184);河北工程大学博士基金项目(20120149)

摘　　要：针对传统的农田灌溉面积提取方法单一且费时费力的问题,提出基于遥感地表温度反演及植被供水指数(VSWI)的方法对石津灌区农作物的灌溉面积进行了提取。在利用Landsat 8影像提取灌溉面积的同时通过高分1号影像提取的小麦种植结构对灌溉区域进行了约束,从而减少了其它地物对灌溉面积提取的影响。结果显示,两种方法计算得到的灌溉区域重叠率达87%,同时将利用遥感方法提取的灌溉结果与实地调查的结果相比较,发现在灌溉时间和面积上具有较好的一致性,因此认为所得结果较为可靠。该方法不仅可以快速、高效的获取到较高精度的灌溉面积数据,同时大大减少了外业工作量,因此可以为农业灌溉区域的调查和监测提供有效的技术支撑。Aiming at the problem that traditional method of irrigation area extraction was simple, laborious and time-consuming, the methods of land surface temperature inversion and vegetation water supply index （VSWI）based on remoting sensing was proposed to extract the crops of the irrigation area. When the irrigation area was extracted by using Landsat 8 images, the wheat planting structure which extracted by GF-1 was used to constrained the irrigation area, to reduce the impact of other surface features on the irrigation area extraction. The results showed that the overlap rate Of irrigation area calculated by the two methods was 87 %. And the results obtained by remote sensing methods and the results of the field survey were compared, they were consistent with the irrigation time and the area, so the result was eliable. This method could not only fast and efficient access to the irrigation area data with high accuracy, while greatly reduced the workload of field, so it could provide effective technical support for the investigation and monitoring of agricultural irrigation area.

关 键 词：Landsat8 地表温度反演 植被供水指数 灌溉面积提取 

分 类 号：P237[天文地球—摄影测量与遥感]