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| 西藏林芝地区近30a来的NDVI变化趋势研究 | |
| 引用本文： | 朱源,彭光雄,王志,王景升,李丹.西藏林芝地区近30a来的NDVI变化趋势研究[J].西北林学院学报,2011,26(4):69-74. |
| 作者姓名： | 朱源 彭光雄 王志 王景升 李丹 |
| 作者单位： | 1. 中国人民大学环境学院,北京,100872 2. 中南大学地学与环境工程学院,湖南长沙,410083 3. 国家气象中心,北京,100081 4. 中国科学院地理科学与资源研究所,北京,100101 |
| 基金项目： | 林业公益性行业科研专项"中国森林对气候变化的影响与林业适应对策"子项目"藏东南高山林线对气候变化的响应和敏感性研究"，中国人民大学科学研究基金(中央高校基本科研业务费资金)项目 |
| 摘 要： | 在西藏林芝地区不同植被类型同期的两套NDVI数据(GIMMS和SPOT-NDVI)显著相关的基础上,通过回归方程插值形成了近30 a来的不同植被类型的NDVI序列数据。结果表明,近30 a来,林芝地区所有植被类型春季的NDVI,在春季升温导致的生长季提前的驱动下,都表现出显著的上升趋势。位于林线之上的高寒灌草地和高山草甸受气温上升的驱动,夏季和秋季的NDVI也都表现出较明显的增长趋势,而位于中低海拔的常绿植被在NDVI值最高的季节(秋季或冬季)没有显著的变化。总的来看,近30 a来,研究区气温上升趋势明显,植被总体呈现生长趋好的趋势。 |
| 关 键 词： | 归一化植被指数 季节 温度 降水量 植被类型 |
The Trend of NDVI during the Past 30 Years in Linzhi Area, Tibet Autonomous Region |
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| ZHU Yuan,PENG Guang-xiong,WANG Zhi,WANG Jing-sheng,LI Dan.The Trend of NDVI during the Past 30 Years in Linzhi Area, Tibet Autonomous Region[J].Journal of Northwest Forestry University,2011,26(4):69-74. | |
| Authors: | ZHU Yuan PENG Guang-xiong WANG Zhi WANG Jing-sheng LI Dan |
| Institution: | ZHU Yuan1,PENG Guang-xiong2,WANG Zhi3,WANG Jing-sheng4,LI Dan1(1.School of Environment and Natural Resources,Renmin University of China,Beijing 100872 China,2.School of Geoscience and Environmental Engineering,Central South University,Changsha,Hunan 410083 China,3.National Meteorological Center,Beijing100081 China,4.Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Science,Beijing 100101 China) |
| Abstract: | Based on the significant correlations between Global Inventory Modeling and Mapping Studies(GIMMS) and SPOT-Normalized Difference Vegetation Index(NDVI) across different vegetation types in Linzhi Area,nearly 30-year NDVI data of main vegetation types were interpolated.The results showed that,driven by the increasing temperature in spring,the growing seasons of all vegetation types began earlier and the NDVI increased significantly in the past 30 years.Following the ascending of temperature,the NDVI of alpi... |
| Keywords: | NDVI season temperature precipitation vegetation type |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |