摘要
以干旱-半干旱过渡区的岱海湖泊为研究对象,选取1989-2018年中6期美国Landsat系列卫星遥感影像数据,使用面向对象多尺度分析方法分割岱海流域湖面面积和对不同土地利用类型进行提取分析,探讨其近30a内湖泊面积变化过程及机制。结果表明:岱海湖面面积从1989年的115.36km^(2)萎缩到2018年的53.00km^(2),萎缩了62.36km^(2),以2.15km^(2)/a的速度迅速减小。由相关性分析可知:岱海湖面面积萎缩主要受建设用地、未利用土地和人工林地等面积变化的影响,这些土地利用类型的面积受人类活动影响较大。由主成分分析可知,引起岱海湖面面积萎缩的第一主成分贡献率为55.533%,主要为GDP、工业总产值等社会因子;第二主成分贡献率为22.884%,主要为日照时数、降水量等自然因子。由此可知岱海湖面面积萎缩主要受人类社会生产生活影响较大,其次为自然因素的影响。
Based on the data of Landsat satellite remote sensing images from year 1989to 2018,object-oriented multi-scale analysis method was used to segment the lake surface area and extract different land use types in the Daihai Lake Basin,which locates in arid-semiarid transitional area,and the process and mechanism of lake area change in the past 30years were discussed.The results showed as follows.The Daihai Lake area shrank from 115.36km^(2) in 1989to 53.00km^(2) in 2018,with a total decrease area of 62.36km^(2) and a rapid decreasing rate of 2.15km^(2)/a.According to the correlation analysis,the shrinkage of the lake area was mainly affected by change of construction land,unused land and artificial forest land,which were all greatly affected by human activities.Through the principal component analysis,the contribution rate of the first principal component was 55.533%,which were social factors such as GDP and industrial output value.The contribution rate of the second principal component was 22.884%,which were mainly natural factors such as sunshine hours and precipitation.Therefore,the shrinkage of the Daihai lake area was mainly influenced by human activities than natural factors.
作者
庞雪敏
刘华民
刘旭隆
于晓雯
寇欣
徐智超
刘东伟
卓义
潘保柱
王立新
PANG Xuemin;LIU Huamin;LIU Xulong;YU Xiaowen;KOU Xin;XU Zhichao;LIU Dongwei;ZHUO Yi;PAN Baozhu;WANG Lixin(School of Ecology and Environment,Inner Mongolia University,Hohhot 010021,China;Collaborative Innovation Center for Grassland Ecological Security(Jointly Supported by the Ministry of Education of China and Inner Mongolia Autonomous Region),Hohhot 010021,China;Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau,Hohhot 010021,China;School of Water Conservancy and Hydropower,Xi'an University of Technology,Xi’an710048,China)
出处
《内蒙古大学学报（自然科学版）》
CAS
北大核心
2021年第3期311-321,共11页
Journal of Inner Mongolia University：Natural Science Edition
基金
国家自然科学基金项目(31560146,31960249)
内蒙古科技重大专项项目(ZDZX2018054)
内蒙古科技计划项目(201802100)。
关键词
岱海
湖面萎缩
灰色关联度
主成分分析
驱动力
Daihai lake
lake shrinking
grey correlation
principal component analysis
driving force
