水生态学杂志2025，Vol.46Issue(3)：92-101,10.DOI:10.15928/j.1674-3075.202212290518
1999-2019年若尔盖县湿地面积动态变化及其驱动力分析
Changes and Driving Forces of the Wetland Area in Ruoergai County,1999-2019
摘要
Abstract
The Ruoergai wetland,located in the northeastern Qinghai-Tibet Plateau,is China's largest al-pine peat bog and serves as a crucial water conservation and recharge zone for the Yellow River.The por-tion of the wetland in Ruoergai County,comprising half the core area of Ruoergai wetland was selected for a case study.We investigated the dynamic changes in wetland area from 1999 to 2019 and analyzed their driving forces using remote sensing,GIS technology and statistical methods,aiming to provide a ref-erence to support scientific decision-making and wetland management in the region.The study was based on Landsat satellite images and social,economic and meteorological data for the study area at 5-yr inter-vals(1999,2004,2009,2014 and 2019)during the period of rich vegetation in summer.The wetland land-scape in Ruoergai County includes rivers,lakes,swamps,high-cover meadows and low-cover meadows.Research shows:(1)From 1999 to 2019,the total area of wetland decreased by 24 889.9 km2,with drastic decreases before 2004 and slow increases after 2004.The dominant wetland landscapes in Ruoergai Coun-ty included swamps,high-cover meadows and low-cover meadows.There was no clear change in river and swamp areas during the study period,but lake area slowly decreased from 1999 to 2014 and gradually increased after 2014.The area of low-cover meadows decreased sharply from 1999 to 2004,increased sig-nificantly from 2005 to 2009,and was relatively stable after 2009.(2)From 1999 to 2019,the conversion of wetland landscapes was generally:river→lake,lake→swamp,swamp→high-cover meadow,high-cover meadow→low-cover meadow.(3)Spatially,the distribution of wetlands in Ruoergai County was concentrated along a southeastern-northwestern axis and this did not change during the study period.(4)The changes in Ruoergai County wetland were driven by dual mechanisms,with human activities as the dominant factor and natural environmental conditions playing an auxiliary role.Among the human activi-ties,primary industrial development and increased agriculture were the most significant contributors to the reduction of wetland area in Ruoergai County.关键词
湿地/遥感/景观转移/动态变化/驱动力/若尔盖县Key words
wetland/remote sensing/landscape conversion/dynamic change/driving force/Ruoergai County分类
水产学引用本文复制引用
潘芸,唐翼鹏,陈炯玲,孙玉,张倩,左世祥,陈建华,简季,张晓锋,李志军,刘帅,王炳乾..1999-2019年若尔盖县湿地面积动态变化及其驱动力分析[J].水生态学杂志,2025,46(3):92-101,10.基金项目
四川省阿坝州科技计划项目(R21YYJSYJ0011). （R21YYJSYJ0011）
