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．
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.
出处
《内蒙古大学学报（自然科学版）》
CAS
CSCD
1996年第5期664-669,共6页
Journal of Inner Mongolia University：Natural Science Edition
基金
内蒙古大学青年基金
国家自然科学基金
