| 基于MATLAB的扎龙湿地归一化差值指数时间变化分析 |
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| 引用本文： | 张玉红,李晓峰,张树清.基于MATLAB的扎龙湿地归一化差值指数时间变化分析[J].东北林业大学学报,2008,36(3):39-40,50. |
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| 作者姓名： | 张玉红 李晓峰 张树清 |
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| 作者单位： | 中国科学院东北地理与农业生态研究所,长春,130012 |
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| 基金项目： | 国家自然科学基金项目(40371082)，全球环境基金(GEF)项目(GF12712-03) |
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| 摘 要： | 以扎龙地区四期Landsat影像为基础数据,经过几何纠正、大气纠正等数据的处理工作,生成四期的扎龙地区的归一化差值指数图像。利用MATLAB分析扎龙地区主轴和副轴方向上的归一化差值指数变化,并由此分析扎龙湿地的植被覆盖和变化特征。结果表明,扎龙地区主轴和副轴方向上的归一化差值整体上均呈下降趋势,说明2个方向上的植被质量在下降。
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| 关 键 词： | 扎龙 归一化差值指数 MATLAB 时间变化 |
| 收稿时间： | 2007-06-25 |
| 修稿时间： | 2007年6月25日 |
Temporal Change of Normalized Difference Vegetation Index Based on MATLAB in Zhalong Wetland |
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| Zhang Yuhong,Li Xiaofeng,Zhang Shuqing.Temporal Change of Normalized Difference Vegetation Index Based on MATLAB in Zhalong Wetland[J].Journal of Northeast Forestry University,2008,36(3):39-40,50. |
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| Authors: | Zhang Yuhong Li Xiaofeng Zhang Shuqing |
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| Abstract: | Normalized Difference Vegetation Index(NDVI) images of Zhalong wetland were created by means of geometric correction and atmospheric correction for satellite data from four sets of Landsat images.The change of NDVI along the principal axis and the secondary axis of Zhalong wetland was analysed using MATLAB,and the vegetation cover and its changing characteristics were obtained.NDVI of Zhalong exhibits a decreasing tendency along both principal axis and secondary axis,which indicates that the vegetation qualities of Zhalong are decreasing along these two ways. |
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| Keywords: | Zhalong wetland Normalized difference vegetation index MATLAB Temporal changes |
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