| 荒漠草原近地面反射特征研究──戈壁针茅（Stipa gobica）荒漠草原近地面反射光谱特征与产草量的相关分析 |
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| 引用本文： | 王艳荣,雍伟义.荒漠草原近地面反射特征研究──戈壁针茅（Stipa gobica）荒漠草原近地面反射光谱特征与产草量的相关分析[J].内蒙古大学学报(自然科学版),1996(5). |
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| 作者姓名： | 王艳荣 雍伟义 |
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| 作者单位： | 内蒙古大学自然资源研究所 |
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| 基金项目： | 内蒙古大学青年基金，国家自然科学基金 |
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| 摘 要： | 描述了温带戈壁针茅（Ｓｔｉｐａｇｏｂｉｃａ）荒漠草原的近地面反射光谱特征，分析了产草量与比值绿度（ＲＶＩ）、标准差绿度（ＮＤＶＩ）和垂直植被绿度（ＰＶＩ）指标的相关关系．确认：戈壁针茅荒漠草原绿度指数与产草量之间具有显著相关性，两者的最适相关形式为指数曲线ｙ＝ａｅｂｎ，ＲＶＩ与ＮＤＶＩ均为比较稳定的估产指标，ＰＶＩ与产草量的相关性在不同月份出现一定的波动，用非红光波段反射率与近红外反射率形成的植被指数与产草量也显著相关．
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| 关 键 词： | 产草量，反射光谱，相关 |
A Correlative Analysis between Near-Grotind Spectral Reflectance and Yield for Stipa gobica Desert-Steppe |
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| Wang Yanrong,Yong Weiyi.A Correlative Analysis between Near-Grotind Spectral Reflectance and Yield for Stipa gobica Desert-Steppe[J].Acta Scientiarum Naturalium Universitatis Neimongol,1996(5). |
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| Authors: | Wang Yanrong Yong Weiyi |
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| Abstract: | The near-ground spectral reflectance characteristics of different communities of Stipa gobica desert-steppe, analysed the correlatation between yield and Ratio Vegetation index (RVI),Normalized Differences Vegetation (NDVI) and Perpendicular Vegetation (PVI) are described.Found that there are outstanding relatednesses between vegetation indexes and yield and the most optimum correlative form is y=aebn. Found that NDVI and RVI are more steady indexes but PVI has more fluctuation in different months and there are outstanding relatednesses between yield and vegetation indexes incltlded the reflectances of TM1,TM2 and NOAA/AVHRR 2 bands. |
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| Keywords: | spectral reflectances yield correlation |
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