文献类型：期刊文献

中文题名：三峡库区生态系统服务权衡时空动态与情景模拟:以秭归县为例

英文题名：Spatiotemporal Dynamics and Scenarios Analysis on Trade?offs between Ecosystem Service in Three Gorges Res?ervoir Area:A Case Study of Zigui County

作者：喇蕗梦[1] 勾蒙蒙[1] 李乐[1] 王娜[1] 胡建文[1] 刘常富[1,2] 肖文发[1,2]

第一作者：喇蕗梦

机构：[1]中国林业科学研究院森林生态环境与保护研究所/国家林业和草原局森林生态环境重点实验室,北京100091;[2]南京林业大学南方现代林业协同创新中心,江苏南京210037

年份：2021

卷号：37

期号：11

起止页码：1368-1377

中文期刊名：生态与农村环境学报

外文期刊名：Journal of Ecology and Rural Environment

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：中国林业科学研究院中央级公益性科研院所基本科研业务费专项资金(CAFYBB2017SZ004)。

语种：中文

中文关键词：生态系统服务;权衡;生产可能性边界;情景分析;秭归县

外文关键词：ecosystem service;trade-off;production possibility frontier;scenario analysis;Zigui County

分类号：X87

摘要：三峡库区是我国重要的生态区,同时也是生态脆弱区,而秭归县位于三峡库区的核心地带,在快速城镇化背景下,区域生态系统人为干扰较为严重,面临水土流失、生态系统退化等突出问题,亟待研究区域生态系统服务变化及其动态权衡关系,探讨区域生态系统优化策略。基于此,在系统分析秭归县2005—2015年产水量、碳储量和土壤保持量的时空变化特征及权衡关系的基础上,采用生产可能性边界(PPF)方法探讨了自然增长情景、生态保护情景和综合发展情景下各生态系统服务之间的权衡特征,提出适合秭归县发展的优化模式。结果表明,(1)2005—2015年秭归县3种生态系统服务存在时空异质性,碳储量和土壤保持量分别增加2.20%和15.13%,产水量呈现先增加后减少趋势;产水量高值区分布在县域南部地区,碳储量高值区分布在东北和东南部地区,土壤保持量高值区分布在西北和南部地区。(2)产水量与碳储量、土壤保持量之间表现为权衡关系,且碳储量与产水量间的权衡关系更为突出,权衡强度具有时间分异性。(3)综合发展情景下生态系统服务权衡关系更接近PPF曲线,表明在该情景下秭归县土地资源配置较优。因此,在秭归县未来发展中应同时兼顾生态安全、粮食安全和经济社会发展3个方面,有针对性地制定生态保护修复措施,以实现区域生态系统服务协调发展。
The Three Gorges Reservoir Area is an important and fragile ecosystem.Zigui County located in the heart of Three Gorges Reservoir Area,is facing a series of ecological threats including water and soil loss,as well as ecosystem degradation due to intensive anthropogenic interference and rapid urbanization.Thus,it is urgent to study the changes in ecosystem services and the dynamics of trade-offs,to find a strategy for optimization of regional ecosystem services.In this study,the spatial-temporal dynamic characteristics and trade-off relationships of the three ecosystem services,namely water yield(WY),carbon storage(CS),and soil conservation(SC)were firstly evaluated for Zigui County.The production possibility frontier(PPF)curve was used to determine the optimal development model for describing the trade-off characteristics among ecosystem services under the three scenarios.These were the business-as-usual scenario(BaU),ecological protection scenario(EP),and comprehensive development scenario(CD).The results show that:(1)all the three ecosystem services displayed spatial-temporal heterogeneity.From 2005 to 2015,CS increased by 2.20%,SC increased by 15.13%,while WY originally increased and then decreased.In a spatial sense,the highest values of WY were mainly distributed in the south of the county,the highest values of CS were distributed in the northeast and southeast,and the highest values of CS were distributed in the northwest and south.(2)CS-WY and SC-WY both showed significantly trade-off relationships,however,the relationship between CS and WY was stronger.Overall,the intensity of trade-offs was scale-dependent.(3)the relationships among the ecosystem services were closer to the PPF curve under CD,indicating that the allocation of land use is better under CD scenario.Therefore,future ecological management should simultaneously consider ecological security,food security,and economic and social development when formulating ecological protection and restoration measures for promoting the coordination of ecosystem services.