水土保持研究2024，Vol.31Issue(2)：240-251,263,13.DOI:10.13869/j.cnki.rswc.2024.02.045
基于土地利用和地形的生态系统服务空间分布及权衡-协同-独立关系
Spatial Distribution and Tradeoff-Synergy-Independence Relationships of Ecosystem Services Based on Land Use and Topography
摘要
Abstract
[Objective]Ecosystem degradation is becoming increasingly prominent,and it is of great signifi-cance to conduct research on the spatial distribution of ecosystem services and their related relationships for the construction of regional ecological civilization.[Methods]InVEST and CASA models were used to quan-titatively evaluate soil conservation,carbon sequestration and oxygen release,water harvesting and habitat quality in Ansai District in 2020 and their trends with topography and land use change at 10 m spatial resolu-tion,and to analyze the tradeoff-synergy-independence relationships among ecosystem services.[Results](1)Ecosystem services were stronger in forests and grasslands,but weaker in unused land and construction land.There were obvious synergies between arable land,forest land and grassland ecosystem services,while unused land showed a tradeoff role and water area shows an independent role.(2)The highest values of soil conservation were found at medium and low elevations,steep slopes and semi-shaded slopes.The highest values of carbon sequestration and oxygen release were found at middle and low elevations,steep slopes and shaded slopes.The highest values of water harvesting were at low elevations and sunny slopes.The highest values of habitat quality were found at high elevations,steep slopes and sunny slopes.(3)From the perspec-tive of topography and land use,the overall performance of ecosystem services followd the order:synergism>independence>tradeoff.Synergies often occurred between soil conservation,carbon sequestration and oxygen release,and water harvesting,as well as the tradeoff between habitat quality and other ecosystem services was obvious.(4)The synergistic effect increased with elevation and slope orientation to the sun,and tended to increase and then decrease with slope elevation,while the tradeoff effect was the opposite.[Conclusion]Land use and topography have the great influence on ecosystem services.Land use planning and ecological management should be carried out according to the local conditions,which should basically prove not only the adaptability of the local ecological restoration measures for returning farmland to forest and grass with its topography and climate,but also the correctness of the decision.关键词
安塞区/生态系统服务/权衡-协同-独立/InVEST模型/CASA模型/地形因子/土地利用Key words
Ansai District/ecosystem services/tradeoff-synergy-independence/InVEST model/CASA model/terrain factor/land use分类
资源环境引用本文复制引用
薛曾辉,高驭洋,卢枰达,周静,王可琳,张斌,马玉,刘梦云..基于土地利用和地形的生态系统服务空间分布及权衡-协同-独立关系[J].水土保持研究,2024,31(2):240-251,263,13.基金项目
国家重点研发计划项目(2016YFC0501703) （2016YFC0501703）
陕西省自然科学基础研究计划项目(2017JZ008) （2017JZ008）
