水土保持通报2016，Vol.36Issue(6)：252-257,6.DOI:10.13961/j.cnki.stbctb.2016.06.042
滇中地区植被NDVI时空演变特征及其驱动因素
Temporal and Spatial Evolution Characteristics of Vegetation NDVI and Its Driving Factors in Central Yunnan Province
摘要
Abstract
[Objective] The relationships between NDVI and the impacting variables of climatic factors and human activity in central Yunnan Province were demonstrated to provide scientific basis for the sustainable social and economic development of the Province.[Methods] MODIS NDVI(normal difference vegetation in dex,NDVI) data sets,climate data from standard meteorological stations and socio-economic statistical source were dealt with overlay method,spatial statistical analysis and correlation analysis to study the characteristics of temporal and spatial variation of vegetation NDVI.[Results] Vegetation growing season in Central Yunnan Province starts from early May and ends around late October.From 2001 On 2010,vegeta tion NDVI showed a rising trend and a rate of 0.03/10 a.Though vegetation coverage area showed an increasing trend overall,there still existed decreases region for vegetation coverage in Central Yunnan Province.The in creased and decreased area covered 70.24％ and 29.76％ of the total area of central Yunnan Province.The most prominent areas with decreased vegetation NDVI were found mainly around the people-centered cities and towns;and the increased areas were mainly in the high-altitude.The average relative humidity,minimum relative humidity and precipitation were the main factors affecting the annual change of vegetation NDVI.The implementation of returning farm land to forestry played a key role for the enhancement of vegetation coverage in Central Yunnan Province;On the contrary,the process of urbanization led to vegetation degradation.[Conclusion] The short term change of vegetation NDVI in central Yunnan Province,for example,the annual change was determined by climatic factors;While long-term change was mainly affected by human activities.关键词
植被NDVI/时空变化/气候因子/退耕还林/滇中地区Key words
vegetation NDVI/temporal and spatial variation/climatic factors/returning land for farming to forestry/central Yunnan Province分类
农业科技引用本文复制引用
丁文荣..滇中地区植被NDVI时空演变特征及其驱动因素[J].水土保持通报,2016,36(6):252-257,6.基金项目
云南省教育厅重点项目“金沙江下游龙川江流域水沙输移过程及机制研究”(2015Z056) （2015Z056）
国家自然科学基金项目(41101099 （）
41261044) （）
