摘要
利用2001年-2010年期间四川省MODIS NDVI月合成数据集,结合同期的气象数据,研究不同高程下的NDVI变化,以及气温和降水对其的影响。成果表明:NDVI增长区域在低海拔和高海拔区均有分布,NDVI降低区域则主要分布在低海拔区;低海拔区与高海拔区NDVI年内最低值出现时间不同,且低海拔区相对高海拔区NDVI的年内变化更为曲折;降水和气温对不同高程的植被NDVI影响不同,同时降水对植被变化的影响较气温存在更为明显的滞后性。
By using a total of 120 synthetic MODIS NDVI dataset of Sichuan province from 2001 to 2010and the same periods of meteorological data,we carried out a research on NDVI variation at different elevation,and analyzed the influence of temperature and precipitation on its.The results show that:the NDVI growth areas were located both in the lower altitude and the higher altitude regions.The NDVI lower areas was mainly located in the lower altitude regions;The annual minimum of NDVI at low and high altitude appeared in different time,and NDVI at lower elevation areas changes relatively more twists and turns to high altitude areas;precipitation and temperature had an different influence in NDVI at different elevation,while the influence of precipitation on vegetation existed relatively more obvious latency to temperature.
作者
余琳
姚昆
刘汉湖
蒲松盛
蒋琼玉
YU Lin YAO Kun LIU Han hu PU Songsheng JIANG Qiongyu(Key Laboratory of Geosciences Spatial Information Technology, Ministry of land and resources of the P. R China , Chengdu Universi ty of Technology, Chengdu 610059,China)
出处
《物探化探计算技术》
CAS
CSCD
2017年第2期296-300,共5页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国家自然科学基金(41102225)
关键词
NDVI
气候因子
不同高程
相关性
四川省
NDVI
climatic factors
different elevation
correlation
Sichuan province
