Sandy Land-lake-vegetation Landscape of Songnen Sandy Land of China:Pattern,Process and Mechanism  

作　　者：DU Huishi HASI Eerdun 

机构地区：[1]College of Tourism and Geographical Science,Jilin Normal University,Siping 136000,China [2]Faculty of Geographical Science,Beijing Normal University,Beijing 100875,China

出　　处：《Chinese Geographical Science》2022年第4期580-591,共12页中国地理科学（英文版）

基　　金：Under the auspices of National Natural Science Foundation of China(No.41871022);Natural Science Foundation of Jilin Province(No.20210101398JC)。

摘　　要：In order to investigate the dynamic evolution of the sandy land-lake-vegetation landscape in Songnen Sandy Land(SSL)and its response to climate change and human activities,the distribution pattern,evolution,and driving mechanisms of the landscape were analyzed based on Landsat satellite images and meteorological and socio-economic data during 1980–2020.The results indicate that the area of sandy land exhibited an upward fluctuation during the last 40 yr,with a net increase of 251.75 km^(2) at an increment rate of 3.80%/10 yr.The lake area also exhibited an upward fluctuation,with a net increase of 1200.95 km^(2) at an increment rate of 20.42%/10 yr.Vegetation coverage decreased by 2633.30 km^(2),with areas of low vegetation coverage exhibiting a trend of initial decline and subsequent increase,areas of medium vegetation coverage showed an upward fluctuation,and areas of high vegetation coverage showed a trend of initial increase and subsequent decrease,with overall changes of–0.67%/yr,1.12%/yr,and 0.17%/yr,respectively.The relationships between sandy land,lakes,and vegetation coverage were significant,with areas of sandy land and low vegetation coverage showing the strongest correlation.The dynamic evolution of landscape is controlled by regional climatic and socio-economic factors,with socio-economic factors as the first principal component contributing up to 59.64%.

关 键 词：sandy land lake wetland vegetation cover landscape evolution Songnen Sandy Land(SSL) 

分 类 号：P901[天文地球—自然地理学]