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塔里木盆地作为重要的林果产地,每年由于虫害而造成的直接经济损失和间接生态效益损失十分巨大。近年来随着遥感技术的发展和日趋成熟,为大面积虫害监测和预报与产量损失评估提供了可能。本文结合遥感图像处理技术,以地面调查和遥感调查相结合的方法,利用植被指数NDVI和TM影像,提取并得到了蚜虫的空间分布格局,包括其发生面积和地区分布。结果表明:塔里木盆地蚜虫危害面积为2.36×104hm2,发生数量多,分布面积广。
As an important fruit producing area in the Tarim Basin, the direct economic losses and indirect ecological benefits caused by pests are huge losses each year. In recent years, with the development and maturing of remote sensing technology, it is possible to monitor and forecast large-scale insect pests and evaluate the yield loss. In this paper, the spatial distribution pattern of aphids, including the occurrence area and the distribution of the aphids, was extracted and obtained using the vegetation index NDVI and TM images combined with remote sensing image processing technology and ground survey and remote sensing survey. The results showed that the harmful area of aphids in Tarim Basin was 2.36 × 104hm2, with a large number of occurrences and a wide distribution area.