Extraction of Global Environmental Change caused by Human Activities

利用1983 ~ 1988年全球植被指数（GVI）月度数据集和与人类活动相关的专题地图数据集，研究了人类活动与全球植被变化的关系。研究结果如下：(1)构建了GVI数据分析系统。该系统主要由影像地图数据库系统构成，该数据库系统包括全球地图指数数据、专题地图数据和各国人口等统计数据。(2)进行了年度GVI值与国家人口的相关分析。这一分析是基于一个假设，即该国的人口是评估人类活动的一个重要因素。结果，绘制出了人口时间变化与植被时间变化相关性较高的国家世界地图。(3)人类活动与生物圈的关系。利用NOAA全球植被指数数据和粮农组织提供的潜在耕地面积估算了人口对作物生产的支持度。

The relationships between human activities and the global change in vegetation was investigated by using Monthly GVI(Global Vegetation Index)data sets from 1983 to 1988 and thematic map data sets related to human activities.The results obtained from this study are as follows :(1)The GVI data analysis system was constructed.This system was mainly made by the Image-Map database system which includes GVI data, thematic map data and statistical data such as populations in countries.(2)The correlation analysis between Yearly GVI value and population in a country was performed.This analysis is based on the assumption that the population in the country is an important factor for the assessment of human activities. As a result, the world map of coutries with high correlation between the time variation of the population and the temporal change in vegetation was produced.(3)The relationships between human activities and biosphere obtained.The supportability of population with respect to the crop production was estimated by using the NOAA GVI data and potential arable land areas provide by FAO.