| 利用垂直植被指数推算作物叶面积系数的理论模式 |
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| 引用本文： | 张晓阳 李劲峰. 利用垂直植被指数推算作物叶面积系数的理论模式[J]. 遥感技术与应用, 1995, 10(3): 13-18. DOI: 10.11873/j.issn.1004-0323.1995.3.13 |
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| 作者姓名： | 张晓阳 李劲峰 |
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| 作者单位： | (中国科学院测量与地球物理研究所 武汉 430077) |
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| 摘 要： | 从作物冠层对光谱的反射特征出发，推导了叶面积系数LAI的遥惑枯算模式，并利用水稻样点观浏数据对模式进行了验证，取得了良好效果。
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| 关 键 词： | 叶面积指数 垂直植被指数 水稻 |
The Derivation of A Reflectance Model for The Estimation of Leaf Area Index Using Perpendicular Vegetation Index |
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| Zhang Xiaoyang,Li Jinfeng. The Derivation of A Reflectance Model for The Estimation of Leaf Area Index Using Perpendicular Vegetation Index[J]. Remote Sensing Technology and Application, 1995, 10(3): 13-18. DOI: 10.11873/j.issn.1004-0323.1995.3.13 |
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| Authors: | Zhang Xiaoyang Li Jinfeng |
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| Abstract: | Information about crop reflectance was derived based on the theory that the radiationdecreased with the exponential function from the top of crop canopies to the bottom.Thecrop reflectance was strongly affected by leaf area index (LAI) and extinction coefficient ofcrop canopies,Since the main problem of estimating LAI was the interference of soil,acorrection for soil background had to be made using perpendicular vegetation index(PVI). Subsequently,the model of estimating LAI using PVI was put forward. Simulation of riceLAI with PVI confirmed the potential of this reflectance model for estimating LAI. |
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| Keywords: | Leaf area index Perpendicular vegetation index Rice |
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