摘要
文中通过遥感影像获取土地利用/覆被变化与植被指数,分析腾格里沙漠东北缘人工植被恢复区土地利用/覆被变化,并结合气候和社会经济数据辨识区域土地利用/覆被变化的驱动因素。结果表明:自2010~2018年间,流动沙丘与固定沙地的面积呈逐渐减少的趋势,高盖度灌丛与湖盆草滩的面积则逐渐增多;人工植被恢复区归一化植被指数与改进土壤调节植被指数的均值及最大值均呈现波动上升的趋势。主成分分析表明:研究区土地利用/覆被变化由人为活动(56.4%)和气候变化(24.9%)共同驱动,其中:最主要的两个因子分别为人工造林面积和降雨量。
Based on remote sensing images,the land use/cover change and vegetation index change were analyzed;and combined with climate and socio-economic data,the driving factors was identified for the artificial vegetation system in the northeast edge of Tengger Desert.The results showed that during 2010~2018,the area of mobile sand dunes and fixed sandy land had gradually decreased,and the area of high-coverage shrubs and lake basin grass beaches had gradually increased.Both the average values and the maximum values of NDVI and MSADI in growth season showed a fluctuating upward trend.Principal component analysis showed that land use/cover change in the study area was driven by human activities(56.4%)and climate change(24.9%),and the two most important factors were the area of artificial afforestation and precipitation,respectively.
作者
赵晨光
程业森
李慧瑛
马扎雅泰
杨紫超
白甜
ZHAO Chenguang;CHENG Yesen;LI Huiying;MA Zhayatai;YANG Zichao;BAI Tian(Inner Mongolia Alxa Forestry Research and Sand Control Institute,Alxa League 750306;Alxa Environmental Projection Publicity and Education Centre,Alxa League 750306;Forestry and Grassland and Water Affairs Bureau,Alxa League High-tech Industrial Development Zone,Alxa League 750300,China)
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2021年第6期131-138,共8页
Journal of Arid Land Resources and Environment
基金
中央财政林业科技推广与示范项目(2019-005)
中央引导地方科技发展资金项目(2020ZY0028)
内蒙古自治区科技重大专项(zdzx2018057)
阿拉善盟科技计划项目(AMYY2019-09)资助。
关键词
人工植被
生态恢复
土地利用/覆被变化
驱动因素
腾格里沙漠
Tengger Desert
artificial vegetation
ecological restoration
land use/cover change
driving factors
