| 植被温度条件指数在土壤墒情遥感监测中的应用 |
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| 引用本文： | 陈怀亮,邹春辉,邓伟,祝新建.植被温度条件指数在土壤墒情遥感监测中的应用[J].气象科技,2005(Z1). |
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| 作者姓名： | 陈怀亮 邹春辉 邓伟 祝新建 |
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| 作者单位： | 河南省气象科学研究所 河南省获嘉县气象局 郑州 |
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| 基金项目： | 科技部社会公益项目(2001DIB10089、2000DIB20104)，河南省气象局项目(Z200506)资助 |
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| 摘 要： | 利用多年极轨气象卫星遥感资料,在计算出植被条件指数和温度条件指数的基础上,计算了遥感监测土壤墒情的植被温度条件指数(TV)。通过实测土壤湿度和TV的散点图,可以得到土壤墒情遥感模型的干旱等级指标,可用于干旱等级定性监测;通过建立土壤湿度和TV的回归方程,可进行土壤墒情定量监测。该方法兼有植被条件指数和温度条件指数的优点,且计算简单,对地面气象要素依赖性小,实时性好,在作物生长旺盛期,其定量反演0~30 cm土壤墒情精度平均可达80%以上,可以替代作物缺水指数法。
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| 关 键 词： | 植被温度条件指数 土壤墒情 遥感模型 |
Application of Vegetation Temperature Condition Index in Remote Sensing of Soil Moisture |
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| Chen Huailiang Zou Chunhui Deng Wei Zhu Xinjian.Application of Vegetation Temperature Condition Index in Remote Sensing of Soil Moisture[J].Meteorological Science and Technology,2005(Z1). |
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| Authors: | Chen Huailiang Zou Chunhui Deng Wei Zhu Xinjian |
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| Institution: | Chen Huailiang~1 Zou Chunhui~1 Deng Wei~1 Zhu Xinjian~2 |
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| Abstract: | Based on the calculation results of Vegetation Condition Index(VCI),Temperature Condition Index(TCI),and the multi-year remote sensing data,the Vegetation Temperature Condition Index(VT) for remote sensing of soil moisture are calculated.By means of observed soil moisture and the VT scattered chart,the drought grading indexes for the remote sensing model of soil moisture can be obtained for qualitative drought monitoring,and by means of the regression equation of soil moisture and VT,the quantitative soil moisture monitoring can be realized.The method has the advantages of both VCI and TCI,is simple in calculation,and has little reliance on ground meteorological data.With a mean precision of more than 80%,it can replace the CWSI method in quantitative soil moisture monitoring during the crop bloom stage. |
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| Keywords: | vegetation temperature condition index soil moisture remote sensing model |
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