基于土地利用的江苏省各市生态系统服务价值时空变化研究  

Spatial and temporal variations of ecosystem service values in Jiangsu Province based on land⁃use change

作　　者：戚丽萍 栾兆擎 魏勉 闫丹丹 李静泰 么秀颖 刘垚 谢思荧 盛昱凤 QI Liping;LUAN Zhaoqing;WEI Mian;YAN Dandan;LI Jingtai;YAO Xiuying;LIU Yao;XIE Siying;SHENG Yufeng(College of Biology and the Environment,Co-Innovation Center for Sustainable Forestry in Southern China,Nanjing Forestry University,Nanjing 210037,China;Natural Resources and Planning Bureau of Xuyi County,Xuyi 211700,China)

机构地区：[1]南京林业大学生物与环境学院,南方现代林业协同创新中心,江苏南京210037 [2]盱眙县城乡规划服务中心,江苏盱眙211700

出　　处：《南京林业大学学报（自然科学版）》2023年第4期200-208,共9页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：国家自然科学基金项目(41871097,41471078);江苏省农业科技自主创新资金项目[CX(18)2026];江苏高校优势学科建设工程资助项目(PAPD)。

摘　　要：【目的】土地利用变化必然改变生态系统结构进而导致生态系统服务价值产生变化。探究江苏省长时间序列的生态系统服务价值与土地利用变化的关系,为江苏省生态可持续发展与土地利用规划管理提供科学依据。【方法】以江苏省为研究区,基于1980—2020年每隔10 a的各市土地利用数据,建立土地利用转移矩阵,分析江苏省土地利用变化特征。采用单位面积价值当量法计算不同时期江苏省各地级市及不同区域的生态系统服务价值;借助GIS技术进行生态系统服务价值空间插值分析(IDW),分析江苏省生态系统服务价值时空动态;利用弹性系数计算土地利用变化率以及生态系统服务价值变化率比值,揭示土地利用变化对生态系统服务价值的响应规律。【结果】1980—2020年的土地利用转移矩阵结果显示,江苏省土地转出量最大的是耕地,转入量最大的是建设用地,其中土地利用转移最主要的方式是耕地转为建设用地。基于单位面积价值法计算结果表明,研究期内江苏省总生态系统服务价值呈上升趋势,不同生态系统服务类型中,水文调节价值最大,水资源供给价值最小。从不同城市角度来看,苏州、盐城、淮安的总生态系统服务价值较高,空间插值分析结果显示,江苏省总生态系统服务价值在长时间序列中表现出明显的连续性与差异性,总体呈现东高西低、南高北低的特征。弹性系数结果显示,高弹性值的区域相对主要集聚于东部沿海,中弹性值的区域相对广泛呈片状分布,低弹性值的区域分布相对分散。【结论】江苏省土地利用变化显著,生态系统服务高值分布与土地利用类型覆盖面积以及生态系统服务价值系数有重要关系,土地利用变化对生态系统服务价值产生影响,同时决定了生态系统服务价值的弹性变化。生态系统服务价值的系数越高,其对土地利用变化越敏感�【Objective】Land⁃use change has an important impact on ecosystem service values.Affected by natural climate change and human activities,land⁃use in Jiangsu Province has undergone dramatic changes,and changes in the ecosystem structure have led to changes in ecosystem service values.By exploring the relationship between the long⁃term sequence of ecosystem service values and land⁃use changes in Jiangsu Province,this study provides a scientific basis for sustainable ecological development and land⁃use planning and management in Jiangsu Province.【Method】Taking Jiangsu as the research areas,based on the land⁃use data of each city from 1980 to 2020,the land use transfer matrix was established to analyze the characteristics of land⁃use changes in Jiangsu Province.The unit area value equivalent method was used to calculate the ecosystem service values of the prefecture⁃level cities and regions in Jiangsu Province in different periods.Spatial interpolation analysis of ecosystem service values was conducted using GIS technology to explore the spatiotemporal dynamics of ecosystem service values in Jiangsu Province.The elastic coefficient was used to calculate the ratio of the rate of change in land use to the rate of change in ecosystem service values to explore the response of ecosystem service values to land⁃use changes.【Result】The amount of cultivated land transferred out was the largest from 1980 to 2020,and the amount of construction land transferred in was the largest.The conversion of cultivated land to construction land is the most important way of land⁃use transfer in Jiangsu Province,and wetlands are mainly converted to cultivated land.The calculation results based on the unit area value method show that the total ecosystem service value of Jiangsu Province keeps increasing.During the study period,the hydrological regulation value was the largest and the water supply value was the smallest for different ecosystem service types.From the perspective of different cities,the total ecosys

关 键 词：土地利用 生态系统服务价值 时空动态 弹性分析 江苏省 

分 类 号：X171.1[环境科学与工程—环境科学]