河南省植被覆盖变化与驱动因子的相关性分析

Correlation Analysis of Vegetation Cover Change and Its Driving Factors in Henan Province

以MODIS/NDVI数据、气象站点数据和统计年鉴数据为基础,利用回归分析法和相关性分析法,详细地分析了河南省2000-2015年植被覆盖变化及其与驱动因子的相关性.结果表明:(1)河南省16a的年际NDVI呈上升趋势,空间分布不均匀,植被覆盖整体上呈改善状态.(2)河南省各地区年均NDVI值与降水量变化呈负相关性、与温度变化呈正相关性,降水对各地区植被覆盖变化状况的影响比温度更显著.(3)河南省植被覆盖状况与人口数量和GDP均呈现显著负相关.本研究表明河南省植被覆盖变化受到温度、降水、人口数量和GDP的影响.

Based on MODIS/NDVI data,meteorological station data and statistical yearbook data,regression analysis and correlation analysis were used to analyze the change of vegetation cover.The correlation between vegetation cover change and driving factors were also analyzed.The results are as follows:(1)The annual NDVI of 16 a in Henan province is on the rise.The spatial distribution is not uniform,and the vegetation coverage is improved on the whole.(2)The average annual NDVI value of all regions in Henan province is negatively correlated with precipitation change and positively correlated with temperature change.The influence of precipitation on the change of vegetation cover is more significant than that of temperature.(3)The vegetation cover of Henan province is negatively correlated with the population and GDP.The results show that the change of vegetation cover in Henan province is affected by temperature,precipitation,population and GDP.