摘要
在气候变化和人类活动日益剧烈的背景下,为评估黄土高原地区生态环境质量时空变化,本文基于GEE平台,以黄土高原为研究区域,选用2000—2020年MODIS产品数据构建RSEI指数,采用趋势分析法、标准差椭圆法、残差分析法等方法分析黄土高原生态环境质量时空变化特征及其对气候变化和人类活动的响应。结果表明:①过去21年间,黄土高原RSEI呈升高趋势,其增长速率为0.005/a(p<0.01);②空间上,RSEI以增长趋势为主,占全区总面积的92.78%,且在未来一段时间内继续保持改善趋势;③迁移上,差等级迁移距离最大,为85.67 km,其次是良等级,为49.05 km,迁移距离最小的是中等级,为30.18 km;④气候变化和人类活动均对黄土高原RSEI产生正面影响,且人类活动是主要驱动因素。
In the context of climate change and increasingly intense human activities,to assess the spatial and temporal changes of ecological and environmental quality in the Loess Plateau region,this study takes the Loess Plateau as the study area based on the GEE platform,selects MODIS product data from 2000 to 2020 to construct the RSEI index,and uses the trend analysis method,standard deviation ellipse method,and residual analysis method to analyze the spatial and temporal changes of ecological and environmental quality in the Loess Plateau.The results show that:①The RSEI of Loess Plateau has shown an increasing trend in the past 21 years,and its growth rate is 0.005/a(p<0.01).②spatially,the RSEI is mainly increasing,accounting for 92.78%of the total area of the region,and keep improving trend in the future.③In terms of migration,the migration distance of poor grade is the largest,at 85.67 km,followed by good grade with 49.05 km;the smallest migration distance is medium grade with 30.18 km.④Both climate change and human activities have positive effects on the RSEI of Loess Plateau,and human activities are the main driving factor.
作者
蒋秀伟
师芸
JIANG Xiuwei;SHI Yun(College of Geomatics,Xi'an University of Science and Technology,Xi'an 710054,China)
出处
《测绘通报》
CSCD
北大核心
2023年第7期1-6,共6页
Bulletin of Surveying and Mapping
基金
国家自然科学基金(41874012,41674013)。
