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当前位置: 首页 > 文章 > 滇中地区植被NDVI时空演变特征及其驱动因素 水土保持通报 2016,36 (6) 252-257
Position: Home > Articles > Temporal and Spatial Evolution Characteristics of Vegetation NDVI and Its Driving Factors in Central Yunnan Province Bulletin of Soil and Water Conservation 2016,36 (6) 252-257

滇中地区植被NDVI时空演变特征及其驱动因素

作  者：
丁文荣
单  位：
云南师范大学旅游与地理科学学院
关键词：
植被NDVI;时空变化;气候因子;退耕还林;滇中地区
摘  要：
[目的]揭示滇中地区植被NDVI时空变化特征及其与气候因子、人类活动的关系,为该地区的社会经济可持续提供科学依据。[方法]以MODIS NDVI数据资料集、标准气象站点的气候数据及社会经济统计数据为素材,采用叠置分析、空间统计分析和相关分析为主要方法。[结果](1)滇中地区植被5月上旬进入生长季而10月下旬结束,2001—2010年植被NDVI呈现出上升的趋势,速率为0.03/10a,植被盖度整体朝增加的方向发展。(2)2001—2010年滇中地区植被覆盖呈增加和减少趋势的面积分别占总面积的70.24%和29.76%,减少最为突出的区域主要集中在人口聚集的城镇周围,增加的区域主要集中在高海拔地区。(3)气候影响因素中的水分类因素即平均相对湿度、最小相对湿度和降水是滇中地区植被NDVI年内变化主要的影响因素。(4)退耕还林工程极大地提升了滇中地区的植被覆盖度,而城镇化过程则使得滇中地区城镇周边的极低、低植被覆盖度区面积增加。[结论]滇中地区年内植被NDVI变化由气候因子所控制,而长期变化则受人类活动的制约。
译  名：
Temporal and Spatial Evolution Characteristics of Vegetation NDVI and Its Driving Factors in Central Yunnan Province
作  者：
DING Wenrong;College of Tourism and Geography Science,Yunnan Normal University;
关键词：
vegetation NDVI;;temporal and spatial variation;;climatic factors;;returning land for farming to forestry;;central Yunnan Province
摘  要：
[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 index,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,vegetation 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 increased 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 an-nual change was determined by climatic factors;While long-term change was mainly affected by human activities.

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