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
何娇娇,刘海新,张安兵,王贺封,刘新侠
摘要(Abstract):
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。
关键词(KeyWords): Landsat8;地表温度反演;植被供水指数;灌溉面积提取
基金项目(Foundation): 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)
作者(Author): 何娇娇,刘海新,张安兵,王贺封,刘新侠
DOI: 10.16251/j.cnki.1009-2307.2017.05.009
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