摘要
从土地利用转型角度研究高潜水位资源型城市的水域转化及其碳排放,为低碳背景下的水资源治理提供科学支持和有效依据。以淮南市为例,通过Google Earth Engine平台调用随机森林和Landsat系列数据,对1987~2019年进行水域时空演变分析,并对2007~2019年进行土地利用分类,构建水域转化矩阵,运用碳排放系数法,估算淮南市和矿区水域与其他地类相互转化产生的碳排放。结果表明,1987~2019年,淮南市和矿区的水域面积总体上呈增长趋势,增量分别为87.98km 2和68.20km 2;在空间上,淮南市水域变化主要分布于矿区;2007~2019年,水域与耕地相互转化最为频繁,主要是耕地转化为水域,该过程主要发生在矿区;淮南市和矿区水域转化产生的碳排放在2007~2013年分别呈碳源和碳汇,2013~2019年均呈碳汇。淮南市和矿区水域转化呈碳源/碳汇主要取决于水域与建设用地相互转化产生的碳排放量。
The water body conversion and carbon emission of the resource-based cities with high groundwater levelswerestudied from the perspective of land use transition,aiming to provide scientific support and effective basis for water resources governance under low carbon background.Taking Huainan City as an example,the spatio-temporal evolution of water area from 1987 to 2019 was analyzed by using random forest and Landsat series data through Google Earth Engine platform,andthe land use classification was carried out from 2007 to 2019,based on whichthe water body conversion matrix was constructed,and the carbon emission coefficient method was used to estimate the carbon emission from the mutual conversion between water body and other land types in Huainan City and mining area.The results showed that the water areas both of Huainan City and its mining area hadan increasing trend in recent 33 years,with the increment of 87.98km 2 and 68.20km 2 respectively.The changes of water area in Huainan City are mainly distributed in the mining area.From 2007 to 2019,the mutual conversion between water body and cultivated land was frequent,mainly fromthe cultivated land to the water body,which occured in mining area.The carbon emissions from the water conversion of Huainan city and the mining area were carbon source and carbon sink respectively from 2007 to 2013,and were carbon sink from 2013 to 2019.The water body conversion of Huainan City andthe mining area is carbon sourceorsink mainly depending on the carbon emissions from the mutual conversion between water body and construction land.
作者
陈孝杨
黄美琴
张红梅
张旭阳
解雯
CHEN Xiaoyang;HUANG Meiqin;ZHANG Hongmei;ZHANG Xuyang;XIE Wen(School of Earth and Environment,Anhui University of Science and Technology,Huainan Anhui 232001,China)
出处
《安徽理工大学学报(自然科学版)》
CAS
2023年第5期56-67,共12页
Journal of Anhui University of Science and Technology:Natural Science
基金
安徽省重点研究与开发计划基金资助项目(S202104a06020064)
淮南关闭矿井地质生态环境评价及综合治理技术研究基金资助项目(HNKY-PG-WT-2021-260)。
关键词
水域转化
碳排放
高潜水位
淮南市
矿区
water body conversion
carbon emission
high groundwater level
Huainan City
mining area