摘要
探索生态系统服务及其权衡/协同关系和驱动机制对实现生态资源系统管理具有重要意义。基于InVEST模型评估长株潭城市群2000—2020年产水量、土壤保持、粮食产量和碳储量4类生态系统服务,并运用Spearman相关性分析、均方根误差、自组织映射和冗余分析等方法分析城市群在千米网格和乡镇尺度下权衡/协同关系(TOSs)的相互关系与空间格局,并量化了6个驱动因素响应。结果表明:(1)长株潭城市群生态系统服务的空间分布存在聚集性和时空异质性,并随尺度扩大,空间聚集性均增大。其中产水量、土壤保持和碳储量的空间分布一致,高供给主要分布于东、南和西部山区,而粮食产量的高供给主要分布于中部平原地区。(2)在两个空间尺度上,研究区产水量-碳储量均为协同效应,土壤保持-粮食产量和土壤保持-碳储量均为权衡效应,产水量-土壤保持、产水量-粮食产量和粮食产量和碳储量的TOSs方向受尺度影响;其中产水量-土壤保持和土壤保持-碳储量的协同面积占比大,其余TOSs的权衡面积占比大;随着尺度的扩大,不同时期的各类生态系统服务之间的权衡强度均增强。(3)在两个尺度上均识别了高价值协同簇、粮食生产簇、城市生活簇和潜在高价值簇4个生态系统服务簇。基于驱动因素对生态系统服务及其TOSs的跨尺度影响,提出差异化生态管理建议。
Exploring ecosystem services and their trade-off/synergy relationships and driving mechanisms is of great significance for achieving ecological resource system management.Based on the InVEST model,this study assesses four types of ecosystem services in the Changsha-Zhuzhou-Xiangtan urban agglomeration from 2000 to 2020:water yield,soil conservation,grain yield,and carbon storage.Methods such as Spearman correlation analysis,root mean square error,self-organizing map,and redundancy analysis are employed to analyze the interrelationships and spatial patterns of trade-off/synergy relationships(TOSs)at the kilometer grid and township scales,and quantify the responses of six driving factors.The results indicate that:1)The spatial distribution of ecosystem services in the Changsha-Zhuzhou-Xiangtan urban agglomeration exhibits agglomeration and spatiotemporal heterogeneity,with spatial agglomeration increasing as the scale expands.The spatial distribution of water yield,soil conservation,and carbon storage is consistent,with high supply mainly distributed in the eastern,southern,and western mountainous areas,while high supply of grain yield is mainly distributed in the central plain area.2)At both spatial scales,the water yield-carbon storage relationship in the study area exhibits a synergistic effect,while the soil conservation-grain yield and soil conservation-carbon storage relationships exhibit trade-off effects.The directions of TOSs for water yield-soil conservation,water yield-grain yield,and grain yield-carbon storage are influenced by scale;among them,the synergistic area proportion of water yieldsoil conservation and soil conservation-carbon storage is large,while the trade-off area proportion of the remaining TOSs is large;as the scale expands,the trade-off intensity among various ecosystem services in different periods increases.3)Four ecosystem service clusters,including high-value synergistic clusters,grain production clusters,urban living clusters,and potential high-value clusters,are identified at both scales.Based on the cross-scale influence of driving factors on ecosystem services and their TOSs,differentiated ecological management suggestions are proposed.
作者
熊鹰
苏垲钧
陈嘉奇
陈斯玄
Xiong Ying;Su Kaijun;Chen Jiaqi;Chen Sixuan(College of Architecture,Changsha University of Science&Technology,Changsha Hunan 410076;Research Center for Human Settlements and Territorial Spatial Planning,Changsha University of Science and Technology,Changsha Hunan 410076)
出处
《国土资源导刊》
2025年第4期44-54,共11页
Land & Resources Herald
基金
国家自然科学基金项目(编号:U21A2010)
湖南省社会科学基金重点项目(编号:23ZDB016)
湖南水利科技项目(编号:XSKJ2025056-31)。
关键词
生态系统服务
权衡与协同
尺度效应
驱动因素
长株潭城市群
ecosystem service
trade-offs and synergies
scale effect
driving factor
Changsha-Zhuzhou-Xiangtan urban agglomeration
