| 基于EOF分析的三江源区植被覆盖变化时空分布特征 |
| |
| 引用本文： | 龚斌,甘小莉,刘伟玲,张林波,陈婷,巢世军.基于EOF分析的三江源区植被覆盖变化时空分布特征[J].地学前缘,2013,20(3):234-239. |
| |
| 作者姓名： | 龚斌 甘小莉 刘伟玲 张林波 陈婷 巢世军 |
| |
| 作者单位： | 1. 中国环境科学研究院 生态环境研究所, 北京 100012;
2. 中国城市科学研究会 学术交流部, 北京 100048;
3. 二十一世纪空间技术应用股份有限公司, 北京 100096;
4. 青海省环境科学研究设计院, 青海 西宁 810007 |
| |
| 基金项目： | 中国工程院重点咨询项目"三江源生态补偿长效机制研究"，国家环境保护部专项"青藏高原重要生态功能保护研究" |
| |
| 摘 要： | 基于遥感图像1999-2010 年SPOT VEGETATION NDVI 数据，利用经验正交函数(EOF)分析方法，研究了近12a来三江源区植被变化的时空分布特征。结果显示近12a来源区植被覆盖呈整体增加趋势：(1)第一特征向量(方差贡献率为45.62%)及对应时间系数表明源区植被覆盖逐渐增加，且增速加快；(2)第二特征向量(方差贡献率为9.77%)及对应时间系数表明东南部和中部植被变化情况以退化为主，而东北部和西南部植被变化情况以增加为主。
|
| 关 键 词： | 三江源区 植被指数 时空特征 经验正交函数 |
| 收稿时间： | 2012-03-02 |
| 修稿时间： | 2012-11-02 |
The vegetation distribution characteristics in the Three-River Headwaters Region in China based on EOF analysis |
| |
| GONG Bin,GAN Xiaoli,LIU Weiling,ZHANG Linbo,CHEN Ting,CHAO Shijun.The vegetation distribution characteristics in the Three-River Headwaters Region in China based on EOF analysis[J].Earth Science Frontiers,2013,20(3):234-239. |
| |
| Authors: | GONG Bin GAN Xiaoli LIU Weiling ZHANG Linbo CHEN Ting CHAO Shijun |
| |
| Institution: | 1.Institute of Eco-environment,Chinese Research Academy of Environmental Science,Beijing 100012,China 2.Research Department,Chinese Society for Urban Studies,Beijing 100048,China 3.Twenty First Century Aerospace Technology Co.,Ltd,Beijing 100096,China 4.Qinghai Research and Design Academy of Environmental Science,Xining 810007,China |
| |
| Abstract: | Based on SPOT-VEGETATION NDVI data from 1999 to 2010,the temporal and spatial distribution characteristics of NDVI in the Three-River Headwaters Region were analyzed by means of the Empirical Orthogonal Function(EOF).The results showed that(1) the vegetation NDVI of the Three-River Headwaters Region had a rising trend,and the first eigenvector(accounting for 45.62% of the total variance) and its temporal coefficients exhibited that the vegetation NDVI was improved with an increasing rate;that(2) the second eigenvector(accounting for 9.77% of the total variance) and its temporal coefficients displayed that the vegetation NDVI was reduced in southeastern and central area,and in contrast,it increased in northeastern and southwestern area. |
| |
| Keywords: | the Three-River Headwaters Region vegetation index (NDVI) temporal and spatial distribution characteristics EOF analysis |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《地学前缘》浏览原始摘要信息 |
| 点击此处可从《地学前缘》下载免费的PDF全文 |
|
