论文首先根据小麦物候历,分析了不同地表覆盖类型在两时相上的归一化植被指数(Normalized Difference Vegetation Index,NDVI)的特征。
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论文首先根据小麦物候历,分析了不同地表覆盖类型在两时相上的归一化植被指数(Normalized Difference Vegetation Index,NDVI)的特征。
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修正的归一化植被指数 NDVIC
增强的归一化植被指数 enhanced vegetation index
的归一化差值植被指数 Normalized Difference Vegetation Index
在对岛屿面积效应研究时，探讨了不同面积岛屿的归一化植被指数及其不同等级岛屿斑块的景观格局。
When studied the area effect of islands, the values of NDVI of islands with different areas, and the landscape pattern of island patches with different grades of NDVI were studied.
研究结果表明：VBSI在估算山区的植被覆盖信息上可以降低影像阴影信息的干扰，总体误差是归一化植被指数NDVI 的50%；
The results show that: VBSI may decrease the error of vegetation fraction resulted from the area of image shadow, and the error is 50% less than that from NDVI.
通过对雪的光谱特征分析，提出利用归一化积雪被指数NDSI结合归一化植被指数进行积雪信息提取的方法。
By analyzing the spectrum characteristic of snow, a method of extracting snow information was suggested based on index of NDSI and NDVI.
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