基于VSWI和TVDI差异的河套灌区沈乌灌域耕地灌溉面积遥感监测

田 鑫; 李瑞平; 王思楠; 范雷雷; 于明辉

引用本文:	田鑫,李瑞平,王思楠,等.基于VSWI和TVDI差异的河套灌区沈乌灌域耕地灌溉面积遥感监测[J].灌溉排水学报,2020,():-.
	tianxin,liruiping,wangsinan,et al.基于VSWI和TVDI差异的河套灌区沈乌灌域耕地灌溉面积遥感监测[J].灌溉排水学报,2020,():-.

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基于VSWI和TVDI差异的河套灌区沈乌灌域耕地灌溉面积遥感监测
田鑫¹, 李瑞平¹, 王思楠¹, 范雷雷¹, 于明辉²
1.内蒙古农业大学水利与土木建筑工程学院;2.威海市国土资源地理信息中心

摘要:

【目的】灌溉面积监测作为灌区管理的重要环节,是灌溉效益评价的重要指标,同时也是区域水资源管理的重要依据,本文以河套灌区沈乌灌域为研究区,尝试利用遥感数据来实现对研究区灌溉面积的提取,为沈乌灌域现代化管理提供理论依据。【方法】利用Landsat-8数据对研究区域的植被供水指数VSWI、温度干旱指数TVDI进行反演,根据实测数据,构建基于VSWI和TVDI差异的灌溉面积监测模型,对沈乌灌域的灌溉面积进行遥感提取。【结果】根据提取的灌溉面积分布情况显示,两种模型具有较高的一致性,运用野外实测数据对两种模型的精度进行检验,结果表明,基于VSWI和TVDI的灌溉面积监测模型反演精度分别为85.3%和89.7%,【结论】证明了两种监测模型的可行性,同时发现基于TVDI差异的灌溉面积监测模型精度高于基于VSWI差异的灌溉面积监测模型。

关键词: 灌区管理;灌溉面积;遥感;VSWI;TVDI

DOI：

分类号:S274.3

基金项目:国家自然科学基金(51769021)

Remote sensing monitoring of farmland irrigation area in Shenwu irrigation area under Hetao Irrigation Area Based on VSWI and TVDI differences

tianxin¹, liruiping¹, wangsinan¹, fanleilei¹, yuminghui²

1.College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University;2.Weihai Land and Resources Geographic Information Center

Abstract:

【Objective】Irrigation area monitoring, as an important part of irrigation area management, is an important index for evaluation of irrigation benefit, and is also an important basis for regional water resources management,【Method】 in this paper, Shenwu irrigation area in Hetao irrigation area is used as the research area, and remote sensing data is used to realize the extraction of irrigation area in the study area, which provides a theoretical basis for modern management of Shenwu irrigation area. Landsat-8 data was used to retrieve the vegetation water supply index (VSWI) and temperature drought index (TVDI) in the study area. 【Result】According to the measured data, the irrigation area monitoring model based on the difference between VSWI and TVDI was constructed, and the irrigation area of Shenwu irrigation area was extracted by remote sensing. According to the distribution of the extracted irrigation area, the two models have high consistency, and the accuracy of the two models is tested by statistical data. According to the results, the inversion accuracy of the irrigation area monitoring model based on VSWI and TVDI is85.3% and89.7% respectively, which proves the feasibility of the two monitoring models at the same time. 【Conclusion】The accuracy of irrigation area monitoring model based on TVDI difference is slightly higher than that of VSWI based irrigation area monitoring model.

Key words: irrigation management;Irrigated area;remote sensing ;VSWI;TVDI