| 黄耀欢,王建华,江东,周芹.基于蒸散遥感反演的全国地表缺水分区[J].水利学报,2009,40(8): |
| 基于蒸散遥感反演的全国地表缺水分区 |
| Regionalization of surface water shortage of China based on evapotranspiration |
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| DOI： |
| 中文关键词: 缺水 分区 蒸散 遥感 反演 |
| 英文关键词: Surface Water Deficit Index water shortage regionalization evapotranspiration remote sensing retrieval |
| 基金项目: |
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| 摘要点击次数: 2680 |
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| 中文摘要: |
| 本文采用日本GMS静止气象卫星数据进行遥感反演，提取地表实际蒸散量(E)和潜在蒸散量(Ep)，据此计算出表征地表缺水程度的指标——SWDI。在GIS的支持下，通过数理统计和空间统计分析“自下而上”的对全国地表缺水状况进行分区。通过分析，全国可划分为5大缺水层次的分区，对比发现全国普遍缺水，不缺水区主要集中在南部沿海，且所占比重较小。全国缺水层次区域的划分，可为区域经济发展，环境保护以及各种国家或区域方针政策的制定提供科学依据。 |
| 英文摘要: |
| The Surface Water Deficit Index (SWDI), an index indicating the regional surface water shortage, was obtained from actual and potential evapotranspiration of land surface which are retrieved from the meteorological satellite GMS data. The whole main land of China is divided into 5 regions according to the level of water shortage by applying the spatial and statistical analyses of GIS data. The regionalization indicates that China is under the stress of water shortage in wide range, while a few provinces with rich water resource are clustered in south coastal region. |
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