| 基于MOD10A1和AMSR-E的北疆牧区积雪动态监测研究 |
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| 引用本文： | 冯琦胜,张学通,梁天刚.基于MOD10A1和AMSR-E的北疆牧区积雪动态监测研究[J].草业学报,2009,18(1):125-133. |
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| 作者姓名： | 冯琦胜 张学通 梁天刚 |
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| 作者单位： | 兰州大学草地农业科技学院,农业部草地农业生态系统学重点实验室,甘肃,兰州,730020 |
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| 摘 要： | 准确监测牧区积雪覆盖范围，对有效防灾减灾和牧区畜牧业持续发展具有特别重要的意义。利用积雪产品和气象台站的观测资料，对比分析了北疆地区２００２年１１月１日－２００５年３月３１日三个积雪季的ＡＭＳＲ-Ｅ 每日雪水当量产品及其与ＭＯＤ１０Ａ１每日积雪分类产品合成的图像ＭＯＤＡＥ１的积雪识别精度。结果表明，１）ＡＭＳＲ-Ｅ每日雪水当量产品的积雪识别率为６６．５９％，总精度为６９．４９％；２）利用用户自定义的合成算法计算的合成图像ＭＯＤＡＥ１，结合了ＡＭＳＲ-Ｅ 雪水当量产品不受天气影响和ＭＯＤ１０Ａ１每日积雪产品较高空间分辨率的优点，积雪识别率达７６．４３％；３）雪深和土地覆盖对合成图像ＭＯＤＡＥ１的积雪识别率具有重要的影响。在雪深为１～４０ｃｍ时，合成图像的积雪识别精度随雪深的增加而增大；在雪深为３１～４０ｃｍ 时，积雪识别率可达９０．１９％；在雪深大于４０ｃｍ 时，积雪识别率开始下降。在牧区合成图像的积雪识别率可达７７．６％，而在开阔的灌丛区积雪识别率略有下降，为７２．７％。
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| 关 键 词： | ＭＯＤＩＳ ＡＭＳＲ-Ｅ 雪水当量 积雪合成产品 精度分析 |
| 收稿时间： | 1900-01-01; |
Dynamic monitoring of snow cover based on MOD10A1 and AMSR-E in the north of Xinjiang Province,China |
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| FENG Qi-sheng,ZHANG Xue-tong,LIANG Tian-gang.Dynamic monitoring of snow cover based on MOD10A1 and AMSR-E in the north of Xinjiang Province,China[J].Acta Prataculturae Sinica,2009,18(1):125-133. |
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| Authors: | FENG Qi-sheng ZHANG Xue-tong LIANG Tian-gang |
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| Affiliation: | FENG Qi-sheng,ZHANG Xue-tong,LIANG Tian-gang(College of Pastoral Agriculture Science , Technology,Lanzhou University,Key Laboratory of Grassl, Agro-ecology System,Ministry of Agriculture,Lanzhou 730020,China) |
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| Abstract: | Accurate monitoring of snow-covered areas plays a significant role in dynamic studies and prevention of snow-caused disasters and of sustainable development in pastoral areas.Using snow cover products and climatic station data,the snow classification accuracy was analyzed for AMSR-E daily SWE(snow water equivalent) products and composite images using AMSR-E SWE and MOD10A1 daily snow cover products in the three snow seasons of November 1 to March 31 from 2002 to 2005 in the north of Xinjiang Province.Result... |
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| Keywords: | MODIS AMSR-E |
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