| 摘要: |
| 该研究提出了用于西藏雪灾监测与评估的方法，该方法结合遥感与地理信息系统，以MODIS数据 得到的归一化雪盖指数（NDSI）为基础，同时估算厚云区的积雪覆盖的可能性，综合考虑包括DEM、道 路等区域基础地理信息系统数据，对2007年3月中旬发生在西藏南部的一次大雪灾进行了监测与评估。结 果表明，该方法能够有效地提取积雪覆盖区域，并对雪灾发生面积进行估算。 |
| 关键词: 西藏 雪灾 MODIS GIS 灾害监测 |
| DOI：10.7621/cjarrp.1005-9121.20110607 |
| 分类号: |
| 基金项目:中央级公益性科研院所基本科研业务费专项资金（2010-16），广东省环境科学与技术公共实验室开放课题 |
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| MONITORING AND EVALUATING SNOW DISASTER IN TIBET COMBINING REMOTE SENSING AND GIS |
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Gao Maofang1, Liu Sanchao2, Qiu Jianjun3, Zhang Hong'ou4, Zhou Xia4
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1.Institute of Agricultural Resources and Regional Planning， Chinese Academy of Agricultural Sciences， Beijing 100081/Guangdong Public Laboratory of Environmental Science and Technology，Guangzhou 510650;2.National Disaster Reduction Center， Ministry of Civil Affairs of China， Beijing 100053;3.Institute of Agricultural Resources and Regional Planning， Chinese Academy of Agricultural Sciences， Beijing 100081;4.Guangdong Public Laboratory of Environmental Science and Technology，Guangzhou 510650
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| Abstract: |
| An applicable approach has been developed in the study for the monitoring and evaluation of snow disas- ter in Tibet. The approach， which based on the normalize difference of snow index（NDSI） retrieved from MODIS， DEM and corresponding GIS data was used to analyze the snowstorm happened in mid-March 2007 in southern Ti- bet. Results indicated that the new approach was able to provide an accurate estimate of snow cover area in south- ern Tibet. Thus it can be concluded that the approach can be used as an efficient alternative for snow cover monito- ring and snow disaster evaluating in Tibet. |
| Key words: tibet snow disaster MODIS GIS disaster monitoring |
