| 归一化多波段干旱指数在农田干旱监测中的应用 |
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| 引用本文： | 张红卫,陈怀亮,周官辉,赵百胜,高正庆.归一化多波段干旱指数在农田干旱监测中的应用[J].科技导报(北京),2009,27(11). |
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| 作者姓名： | 张红卫 陈怀亮 周官辉 赵百胜 高正庆 |
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| 作者单位： | 张红卫,ZHANG Hongwei(河南省气象科学研究所,郑州450003;新乡市气象局,河南新乡453000);陈怀亮,CHEN Huailiang(河南省气象科学研究所,郑州,450003);周官辉,赵百胜,高正庆,ZHOU Guanhui,ZHAO Baisheng,GAO Zhengqing(新乡市气象局,河南新乡,453000)
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| 基金项目： | 国家科技支撑计划，风云三号卫星遥感开发与应用项目，河南省气象局重点科研项目，新乡市科技项目 |
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| 摘 要： | 土壤水分含量及植被生长状态是重要的干旱指数.对土壤及植被的正确光谱解译是判断土壤及植被干旱程度的重要依据之一.本研究利用MODIS传感器中通道2(860 nm)波段被植被冠层强烈吸收性、通道6(1 640 nm)和通道7(2 130 nm)对土壤与植被水分含量吸收差异敏感性,构建了归一化多波段干旱指数(NMDI),验证了归一化多波段干旱指数在河南省应用的效果与可能性.研究发现,0～50 cm深度的土壤墒情与NMDI显著相关,在对0～50 cm层次的土壤墒情进行监测时,可以采用NMDI方法.分别对其进行F检验,均通过α=0.01显著性检验.同时,该指数在高植被覆盖区的应用效果有待进一步验证.
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| 关 键 词： | 归一化多波段指数 农田 干旱监测 |
Application of Normalized Multiband Drought Index Method in Cropland Drought Monitoring |
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| ZHANG Hongwei,CHEN Huailiang,ZHOU Guanhui,ZHAO Baisheng,GAO Zhengqing . Henan Institute of Meteorological Sciences,Zhengzhou ,China . Xinxiang Meteorological Bureau,Xinxiang ,Henan Province,China.Application of Normalized Multiband Drought Index Method in Cropland Drought Monitoring[J].Science & Technology Review,2009,27(11). |
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| Authors: | ZHANG Hongwei CHEN Huailiang ZHOU Guanhui ZHAO Baisheng GAO Zhengqing Henan Institute of Meteorological Sciences Zhengzhou China Xinxiang Meteorological Bureau Xinxiang Henan Province China |
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| Institution: | ZHANG Hongwei1,2,CHEN Huailiang1,ZHOU Guanhui2,ZHAO Baisheng2,GAO Zhengqing2 1. Henan Institute of Meteorological Sciences,Zhengzhou 450003,China 2. Xinxiang Meteorological Bureau,Xinxiang 453000,Henan Province,China |
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| Abstract: | Soil moisture and vegetation status are the most important and direct index for drought. The interpreting to vegetation and spectrum analysis of soil are two important elements in the judgment of drought. Based on strong absorption in channel 2 (860 nm) of MODIS sensor by regetation canopy and channel 6 (1 640 nm) and channel 7 (2 130 nm) sensitivity to soil and vegetation water content absorption difference, the study constructed a Normalized Multi-band Drought Index (NMDI). The potential hadbeen confirmed... |
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| Keywords: | Normalized Multi-band Drought Index cropland drought monitoring |
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