摘要
针对目前雄安新区土地利用方式对生态环境质量影响不清晰的问题,以2005年、2015年和2020年Landsat TM/OLI遥感影像为主要数据源,采用土地利用转移矩阵,分析不同时列下,雄安新区土地利用类型转变数量、转变方向,建立RSEI模型,评价研究区生态质量时空特征,并探讨土地利用和生态质量的联动关系。结果表明:2005-2015年间,主要转出类型是耕地和水域,其次是林地;主要转入类型为建设用地,主要由耕地转移而来。2015-2020年间,主要转出类型是耕地,其次是林地;主要转入类型为建设用地,主要由耕地转移而来。2005年、2015年和2020年RSEI均值分别为0.52,0.43,0.40,生态质量整体维持在“一般”状态,并且有变差的趋势,空间上来看,雄安新区西部生态优于东部,生态质量变好的地区主要是安新县西南部唐河流域。土地利用类型对生态质量的典型贡献是:当地表覆盖为植被时,RSEI指数高;当地表覆盖为裸土地或建设用地时,RSEI指数低。
In view of the unclear impact of land use mode on ecological environment quality in Xiong'an New Area,taking Landsat TM/OLI remote sensing images in 2005,2015 and 2020 as the main data source,using land use transfer matrix,analyze the quantity and direction of land use type transformation in Xiong'an New Area at different times is analyzed,RSEI model is established,and the temporal and spatial characteristics of ecological quality in the study area are evaluated.The linkage relationship between land use and ecological quality is also discussed.The results show that from^(2)005 to 2015,the main transfer out types are cultivated land and water area,followed by forest land,and the main transfer type is construction land,which is mainly transferred from cultivated land.From 2015 to 2020,the main transfer out type is cultivated land,followed by forest land;The main transfer type is construction land,which is mainly transferred from cultivated land.The average values of RSEI in 2005,2015 and 2020 are 0.52,0.43 and 0.40,respectively.The overall ecological quality remained in the“general”state and tended to deteriorate.Spatially,the ecology in the west of Xiong'an New Area was better than that in the east,and the area with better ecological quality was mainly Tanghe River basin in the southwest of Anxin county.The typical contribution of land use types to ecological quality is that when the surface is covered with vegetation,the RSEI index is high;and when the surface is covered with bare land or construction land,the RSEI index is low.
作者
万虹麟
史旋
张天兴
韩威
兰得茂
WAN Hong-lin;SHI Xuan;ZHANG Tian-xing;HAN Wei;LAN De-mao(Department of Hydraulic Engineering,Hebei University of Water Resources and Electric Engineering,061001,Cangzhou,Hebei,China)
出处
《河北水利电力学院学报》
2022年第4期33-39,共7页
Journal of Hebei University Of Water Resources And Electric Engineering
基金
河北省大学生创新创业训练计划项目(S202110085029)
河北省高等学校科学技术研究重点项目(ZD2020348)。
关键词
遥感影像
土地利用变化
遥感生态指数RSEI
生态效应
remote sensing image
land use change
remote sensing ecological index(RSEI)
ecological effect
