摘要
本文主要基于多源遥感数据,以沙特吉赞省为例,对遥感影像进行了归一化值被植数(NDVI)的提取,并根据像元二分模型原理估算出研究区的植被覆盖度,结果表明:该地区植被覆盖度整体较低,高植被覆盖区主要集中在东部山地以及多处东西向河谷区域。低植被覆盖区面积占比73%左右,中高及高植被覆盖区面积占比10%左右。
This paper is mainly based on multi-source remote sensing data. take Saudi Arabia as an example, the normalized image was extracted from the remotely sensed image(NDVI), and estimate the vegetation coverage of the study area according to the pixel binary model principle. the results show: overall coverage of vegetation in the area is low, The high vegetation coverage area is mainly concentrated in the eastern mountainous areas and in many eastwest river valley areas. Low vegetation coverage area accounts for about 73%, medium and high vegetation coverage area accounts for about 10%.
引文
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