基于MODIS影像的黄冈市植被覆盖时空变化特征的研究

本文利用遥感和GIS技术处理黄冈市2000~2013年共14年的同时相的MODIS影像,获得其植被覆盖度,并对植被覆盖度进行分级。同时对植被覆盖度进行地形统计和分区统计,较清晰地反映了黄冈市植被覆盖度的时间变化和空间三维分布状况。研究结果显示:(1)从2000年到2008年黄冈市植被覆盖度处于上升趋势,从2008年到2013年黄冈市植被覆盖度则处于下降趋势,但总体而言黄冈市的植被覆盖度良好;(2)从2000年到2013年黄冈市植被覆盖度变化不明显,上升为主;下降、急剧下降和快速上升的比例很低;(3)植被覆盖度较高的县市主要为:英山县、罗田县、麻城市;植被覆盖较低的县市主要为:黄州区、武穴市、黄梅县。

Research on spatio-temporal characteristics of vegetation coverage in Huanggang based on MODIS RS image

This paper adopted remote sensing and GIS techniques to deal with a total of 14 years （from 2000 to 2013） of phase MODIS images in Huanggang, so as to obtain and grade its vegetation coverage. From the terrain statistics and partition statistics for the vegetation coverage, the three-dimensional vegetation coverage changes of Huanggang in time and space distribution were clearly reflected. The results show that. （1） From 2000 to 2008, Huanggang vegetation coverage is in the rising trend, while from 2008 to 2013, it is in decline. Generally speaking, it is good. （2） From 2000 to 2013, the vegetation coverage changes in Huanggang city are unapparent, the main trend is upward. Downward, rapid fall and rapid rising account for very low proportion（3） The counties and cities with comparatively high vegetation coverage are Yingshan, Luotian, Macheng. The area with comparatively low vegetation coverage mainly includes Huangzhou, Wuxue and Huangmei.