桂林理工大学学报2017，Vol.37Issue(1)：146-153,8.DOI:10.3969/j.issn.1674-9057.2017.01.022
滇黔桂岩溶区NDVI变化及其与气候因子的耦合关系
NDVI variation and coupling relation with climate factors in Yunnan-Guizhou-Guangxi karst area
摘要
Abstract
The spatial and temporal variation of NDVI and its response to climate change in Yunnan-Guizhou -Guangxi karst area of China during 1998-2012 are researched based on SPOT NDVI data and temperature/precipitation data from meteorological stations by linear regression and correlation analysis.Results show that:(1) In the past 15 years,both the annual and seasonal NDVI increased.(2) At the annual time scale,the site with positive correlation between NDVI and temperature was slightly higher than negative correlation,while the site with positive correlation between rainfall and NDVI were almost equal to negative correlation site.The above analysis illustrated that the influence of temperature on the growth of vegetation was slightly greater than that of precipitation.(3) At the monthly time scale,NDVI variation was greatly influenced by rainfall in spring and autumn,while significantly influenced by temperature in winter.Temperature and precipitation had different comprehensive effect on vegetation NDVI with season variation.Growing season NDVI was strongly influenced by hydrothermal factor during the month,and there was no obvious lag effect.关键词
滇黔桂岩溶区/NDVI/气候因子/相关分析/耦合关系Key words
Yunnan-Guizhou-Guangxi karst area/NDVI/climate factor/correlation analysis/coupling relation分类
天文与地球科学引用本文复制引用
靖娟利,王永锋..滇黔桂岩溶区NDVI变化及其与气候因子的耦合关系[J].桂林理工大学学报,2017,37(1):146-153,8.基金项目
国家自然科学基金项目(41261088) （41261088）
广西“八桂学者”岗位专项经费资助项目 （）
广西空间信息与测绘重点实验室项目(130511411 （）
140452408) （）
广西中青年教师基础能力提升项目(KY2016YB192) （KY2016YB192）
