| 1991～2005年环鄱阳湖区植被覆盖变化分析 |
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| 引用本文： | 祝必琴,辜晓青,陈晖.1991～2005年环鄱阳湖区植被覆盖变化分析[J].安徽农业科学,2012(12):7306-7308,7321. |
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| 作者姓名： | 祝必琴 辜晓青 陈晖 |
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| 作者单位： | 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 |
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| 基金项目： | 科技部行业专项，江西省气象科技创新基金，国家自然科学基金 |
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| 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。
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| 关 键 词： | 植被覆盖 归一化植被指数 变化分析 鄱阳湖区 |
Analysis on Change of the Vegetation Cover in Poyang Lake Area from 1991 to 2005 |
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| Institution: | ZHU Bi-qin et al(Institute of Meteorological Science in Jiangxi Province,Nanchang,Jiangxi 330046) |
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| Abstract: | 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. |
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| Keywords: | Vegetation cover NDVI Change analysis Poyang Lake area |
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