基于土地利用变化的湘江流域生态系统服务价值研究  

Study on Ecosystem Service Value of Xiang River Basin Based on Land Use Change

作　　者：彭南京 杨惠君 Peng Nanjing;Yang Huijun(School of Geographical Sciences,Hunan Normal University,Changsha 410081,Hunan,China)

机构地区：[1]湖南师范大学地理科学学院,湖南长沙410081

出　　处：《绿色科技》2024年第21期203-211,216,共10页Journal of Green Science and Technology

摘　　要：基于湘江流域2000年、2005年、2010年、2015年、2020年5期土地利用数据,运用ArcGIS空间分析方法结合修正后的生态系统服务价值当量,估算研究区生态系统服务价值并探讨其时空变化。结果表明:(1)2000-2020年,湘江流域耕地面积减少最多,建设用地面积增加最多。土地利用变化剧烈程度比较为:建设用地>未利用地>草地>耕地>水域>林地;(2)2000-2020年,湘江流域ESV呈先增加后减少的变化趋势,ESV总量增加了0.62亿元。各地类的ESV总量比较为:林地>水域>耕地>草地>未利用地>建设用地,各单项服务的ESV比较为:调节服务>支持服务>供给服务>文化服务。ESV高低值分布基本与地类分布保持一致,高值区显著集中于林地与水域的周边地带,低值区显著集中于建设用地和未利用地附近;(3)在空间上,各地类ESV表现显著正相关性和集聚分布,总体呈现高高、低低集聚,局部呈现高低、低高集聚。各地类间的相互转移是导致ESV损益的主要原因。通过分析LUCC和ESV的变化特征和相互关系,可为湘江流域生态质量提升和区域可持续发展提供坚实的支撑和科学借鉴。Based on the 2000,2005,2010,2015,and 2020 land use data of the Xiang River basin,using the ArcGIS spatial analysis method combined with the revised ecosystem service value equivalent,the value of ecosystem services in the study area was estimated and its spatio-temporal changes were discussed.The results showed that:①from 2000 to 2020,the area of cultivated land in the Xiang River basin decreased the most,while the area of construction land increased the most.The intensity of land-use change from strong to weak were as follows:construction land>unused land>grassland>cultivated land>water area>forest land;②from 2000 to 2020,the amount of ESV in the Xiang River basin increased by 62 million yuan.The order of total amount of ESV from high to low is:forest>water>farmland>grassland>unused land>construction land.From high to low,the ESV of individual services are:regulation services>support services>supply services>cultural services.The distribution of high and low values of ESV was consistent with that of land type.The high values were concentrated in the periphery of woodland and water area,and the low values were concentrated in the vicinity of construction land and unused land;③in spatial distribution,ESV types showed positive correlation and clustering distribution,high and low clustering in general,high and low clustering in local.The main reason of ESV profit and loss is the mutual transfer between different types.The analysis of LUCC and ESV can provide a solid support and scientific reference for the improvement of ecological quality and regional sustainable development in the Xiang River basin.

关 键 词：土地利用变化 生态系统服务价值 空间自相关分析 湘江流域 时空演变 

分 类 号：X321[环境科学与工程—环境工程]