黑河中游地区生态环境演变及其驱动因子分析.

In order to analyze Heihe River middle reaches area of the ecological environment change trend and its formation mechanism，this paper selected the 2000 and 2011 study area remote sensing image data to establish the land use type matrix for remote sensing image data analysis. The results show that:a） in 2000-2011，in the middle reaches of Heihe River，the mainly evolution trend of the ecological environment is from the unused land to cultivated land，other types of land use conversion is also frequently; b) the main factors which the trend of the ecological environment are the results of the interaction between the natural factors and human factors, among them, human factor occupies the mainly position. [ABSTRACT FROM AUTHOR]