摘要
植被覆盖动态变化是进行生态遥感监测的重要内容,以重庆云阳县为例,研究重庆山区的植被动态变化规律,利用2010-2015年期间的Landsat TM数据,对重庆市云阳县山区的植被覆盖度进行动态变化的规则性分析。结合归一化植被指数NDVI计算植被的覆盖度,利用FRAGSTATS软件从植被覆盖的形状、斑块大小、高光谱特征等方法分析。结果分析表明:云阳县的山区植被覆盖整体上呈下降趋势,但总体来说,植被的覆盖水平一直比较稳定,云阳县的植被变化类型的面积及比例区域平稳,说明了当地对生态环境的维护力度较大,但同时也出现了一定的轻微退化区域,需要对植被的退化区域进行相应的维护,结合自然和人为的力量,改善生态环境,进行生态修复。
The dynamic change of vegetation coverage is the important content of ecological remote sensing monitoring and in Chongqing Yunyang County as an example, Chongqing mountain vegetation dynamics research, is by 2010 to 2015 period of Landsat TM data, on, Yunyang County, Chongqing City,mountain vegetation coverage into action state change rules of analysis, combined with the normalized difference vegetation index（NDVI） and calculation of vegetation coverage, the method of using FRAGSTATS software from vegetation cover shape, patch size, high spectral characteristics analysis. The results show that： in Yunyang County of mountain vegetation coverage showed a decreasing tendency as a whole, but overall, the level of vegetation cover has been relatively stable, Yunyang County, vegetation changes in the type of area and the proportion of stable region, indicating that the local on the ecological environment maintenance strength is greater, but at the same time, there are some slightly degraded area,need to vegetation degradation region corresponding maintenance, combination of natural and human forces, improve the ecological environment, ecological restoration.
作者
刘湘
夏君
余晔
Liu Xiang Xia Jun Yu Ye(Chongqing Survey Institute , Chongqing 401121, China)
出处
《科技通报》
北大核心
2016年第9期35-38,43,共5页
Bulletin of Science and Technology
关键词
TM数据
植被覆盖
重庆山区
云阳县
TM data
vegetation cover
Chongqing mountain
Yunyang County
