1991～2005年环鄱阳湖区植被覆盖变化分析  

Analysis on Change of the Vegetation Cover in Poyang Lake Area from 1991 to 2005

作　　者：祝必琴[1] 辜晓青[1] 陈晖[2] 

机构地区：[1]江西省气象科学研究所,江西南昌330046 [2]江西省林业厅利用外资项目办公室,江西南昌330038

出　　处：《安徽农业科学》2012年第12期7306-7308,7321,共4页Journal of Anhui Agricultural Sciences

基　　金：公益性行业科研专项GYHY200906021;江西省气象科技创新基金项目"环鄱阳湖区植被指数变化研究";国家自然科学基金项目(40871240/D011004)

摘　　要：[目的]分析环鄱阳湖区1991～2005年植被覆盖的变化。[方法]利用环鄱阳湖区1991和2005年两景Landsat TM遥感影像为数据源,以归一化植被指数像元二分模型对植被覆盖度进行估算,并通过转移矩阵,对该区植被覆盖等级的时空变化进行了分析。[结果]1991～2005年,环鄱阳湖区植被覆盖总体略呈上升趋势,林地面积有所增加,但同时耕地面积有所减少,沙地、裸地等也呈小幅增加趋势。[结论]政府及相关部门应该合理进行土地资源配置,保护自然生态环境。[Objective] The research aimed to analyze variation of the vegetation cover in Poyang Lake area from 1991 to 2005.[Method] Based on Landsat TM remote sensing images of 1991 and 2005 in Poyang Lake area,NDVI dimidiate pixel model was used to calculate vegetation coverage.By transfer matrix,temporal-spatial change of the vegetation cover grade in the area was analyzed.[Result] Vegetation cover in this region overall presented increase trend from 1991 to 2005,and forestry area increased somewhat.But at same time,farmland decreased to some extent.Sandlot and bare land also increased slightly.[Conclusion] Governments and relevant departments should be reasonable for allocating land resources and protect natural ecology environment.

关 键 词：植被覆盖 归一化植被指数 变化分析 鄱阳湖区 

分 类 号：S181.3[农业科学—农业基础科学] Q948[生物学—植物学]