温度反演和植被供水指数的农田灌溉面积提取

发布时间：2018-06-06 22:20

本文选题：Landsat + 地表温度反演　；参考：《测绘科学》2017年05期

【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。
[Abstract]:In order to solve the problem that the traditional method of farmland irrigation area extraction is simple and time-consuming, a method based on remote sensing surface temperature inversion and vegetation water supply index (VSWI) is proposed to extract the irrigated area of crops in Shijin irrigation area. The irrigated area was extracted by Landsat 8 image and the wheat planting structure extracted from the high score 1 image was used to restrict the irrigated area, thus reducing the influence of other ground objects on the irrigation area extraction. The results showed that the overlap rate of irrigation area calculated by the two methods was 87%, and the irrigation results obtained by remote sensing method were compared with the results of field investigation. It was found that the irrigation time and area were in good agreement with each other. It is considered that the results obtained are more reliable. This method can not only obtain high precision data of irrigation area quickly and efficiently, but also greatly reduce the workload of field operation, so it can provide effective technical support for the investigation and monitoring of agricultural irrigation area.
【作者单位】：河北工程大学地球科学与工程学院;河北省煤炭资源综合开发与利用协同创新中心;河北工程大学矿业与测绘工程学院;河北工程大学水电学院;
【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)
【分类号】：S127;S274

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