| 杨静学，黄本胜，欧阳显良，陈亮雄，林时君，樊风雷.基于遥感技术的珠三角6类林分的蒸散比研究[J].广东农业科学,2013,40(3):125-128 |
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基于遥感技术的珠三角6类林分的蒸散比研究 |
| Forest evapotranspiration in Pearl River Delta based on remote sensing technology |
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| DOI： |
| 中文关键词: 遥感 桉树 水文 蒸散比 珠三角 |
| 英文关键词: eucalyptus remote sensing evapotranspiration Pearl River Delta hydrology |
| 基金项目:广东省水利科技创新项目（2010484）；国家自然科学基金(41201432) |
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| 摘要点击次数: 1955 |
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| 中文摘要: |
| 对珠江三角洲六类主要林分（区域）的蒸散发比进行了研究，6 类林分包括桉树林、果树林、针阔混交林、灌木林、针叶混交林、阔叶混交林。同时对基于Priestley-Taylor扩展模型的物理机制进行分析与推理，发现可以通过MODIS 和TM 热红外数据计算的地温值来评估较大区域上的蒸散发能力，并结合2008—2009 年的晴空数据进行计算分析。结果表明珠三角6 类林分（区域）的蒸散发作用相当，桉树林并非耗水量最大的林种。 |
| 英文摘要: |
| Evapotranspiration ratio of six major forest types in the Pearl River Delta are studied in this paper, including eucalyptus forest, fruit forest, coniferous forest, shrub forest, coniferous forest, and broad-leaved mixed forest. This paper analyses PT-T model, which was based on Priestley-Taylor extended model, and had a result that land surface temperature or temperature difference between day and night could be used to evaluate the evapotranspiration factor. Then the MODIS data and TM data were used to calculate the evapotranspiration of water consumption of six forest types. The result showed that water consumption of different forest had little difference, and the EF of eucalyptus is smaller than the others. |
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