The Trend of NDVI during the Past 30 Years in Linzhi Area,Tibet Autonomous Region
The Trend of NDVI during the Past 30 Years in Linzhi Area,Tibet Autonomous Region
复制标题
DOI：
--
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
L. Dan
中科院分区：
文献类型：
--
作者：
L. Dan
基于林芝地区不同植被类型的全球清查模型与制图研究（GIMMS）与SPOT归一化植被指数（NDVI）之间的显著相关性，对林芝地区主要植被类型近30 a的NDVI数据进行插值，结果表明：在春季气温升高的驱动下，近30年来，各植被类型的生长季开始提前，植被指数显著增加，随着气温的升高，高寒灌丛草地和草甸的NDVI在夏秋季节呈上升趋势，而万年青植被在秋冬季节变化不明显，此时NDVI值达到最大值。研究区气温升高，植被状况有变好的趋势。
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 alpine shrub-grasslands and meadows increased in summer/autumn,but the evergreen vegetations demonstrated no clear trend in autumn/winter,when the NDVI values arrived at their maximum.In general,during the past 30 years,the air temperature increased and the vegetation showed the trend of getting better in the study area.