【摘要】 通常在研究植被生态退化时,植被盖度是常用的一个监测指标。在遥感领域,使用植被指数进行植被盖度监测已经被广泛应用,本文以NDVI,MSAVI和混合像元线性分解植被成分为主要分析因子,以新疆艾比湖为实验区,经过实地调查和图像分析,认为改进后的植被指数固然提高了对弱植被信息的表现能力,但是混合像元线性分解后得到的植被丰度值更适合应用于低覆盖地区的植被动态监测。更多还原

【Abstract】 While studying the vegetation degradation,Vegetation coverage is often used.In the field of remote sensing,using vegetation index(NDVI,MSAVI,et.) to describevegetation coverage percentage is popular accepted and applied.In this paper,experiments in Aibi lake area were made in order to compare the difference betweenNDVI?MSAVI and Vegetation coverage obtained by linear spectral unmixing.The results of the experiment indicate that vegetation coverage is more suitable for monitoring low vegetation cover dynamic change.更多还原