论文标题
观点和见识解决植被指数的缺陷
Perspectives and insight toward solving flaws of vegetation indices
论文作者
论文摘要
这种透视手稿解决了植被指数计算中的几个未解决的问题，例如作物的光谱指纹的变化以及年轻和成熟叶子的吸光度和反射光谱模式的差异。由于时间和空间变化，光谱偏移很明显。这是指基于近红外的广义指数，NDVI，红色波长不能精确地表达农作物植被指数的真实含义。因此，通常使用的植被指数很可能破坏作物的实际光合作用能力或绿色。因此，可能需要根据可见区域的光谱特征来克服这种植被指数的局限性。
This perspective manuscript addressed several unsolved questions in vegetation index calculation such as the variation of the spectral fingerprint of crops and the differences in absorbance and reflectance spectral patterns of the young and mature leaves. The spectral shift is evident due to temporal and spatial variations. It means a generalized index, NDVI based on a near-infrared, and a red wavelength cannot precisely express the true meaning of a crops vegetation index. Thus commonly used vegetation indices have high possibility to undermine the actual photosynthetic capability or greenness of crops. Therefore, a crop specific vegetation index based on spectral characteristics in visible regions might be necessary to overcome this limitation of vegetation indices.
