城市森林景观多功能性及权衡协同关系  

Multifunctionality of urban forest landscapes and their trade-offs and synergies

作　　者：郭玉洁 任志彬[3,4] 何兴元 GUO Yujie;REN Zhibin;HE Xingyuan(Shenyang Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China;CAS Key Laboratory of Forest Ecology and Silviculture,Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China;Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,China;University of Chinese Academy of Sciences,Beijing 100049,China;Shenyang Arboretum,Chinese Academy of Sciences,Shenyang 110016,China)

机构地区：[1]中国科学院沈阳应用生态研究所,沈阳110016 [2]中国科学院森林生态与管理重点实验室,沈阳110016 [3]中国科学院东北地理与农业生态研究所,长春130102 [4]中国科学院大学,北京100049 [5]中国科学院沈阳树木园,沈阳110016

出　　处：《应用生态学报》2025年第3期837-846,共10页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金重点项目(32130068)资助。

摘　　要：城市森林景观多功能性的评估对于城市森林景观配置、优化和规划的决策至关重要。然而,由于城市森林的高度破碎化和异质性,科学评估其多功能性与权衡协同关系面临挑战。本研究以长春市为研究区,基于样方调查和卫星遥感数据,构建城市森林生态功能估测模型,提出综合考虑质量和数量的多功能评估框架,定量刻画了多功能空间格局与权衡协同关系。结果表明:2020年,长春市建成区城市森林年固碳量达到36.78 t,平均降温0.96℃,年清除PM_(2.5)量达到527.52 t,休闲游憩功能为50.08人·m^(-2)。与城市中心区相比,郊区森林的固碳能力、空气净化功能和休闲游憩功能更强,呈现中间低、周边高的空间分布模式。休闲游憩功能与固碳、降温功能之间存在明显的权衡关系,固碳功能与空气净化、降温功能之间具有较强的协同关系。随着城市化强度的变化,功能权衡与协同关系也表现出空间异质性,其中,固碳和降温功能在城市中心区表现为协同关系,郊区为弱权衡关系。长春市城市森林景观多功能性在阈值为25%时性能最佳,高值区集中在城市外环,呈现西强东弱的空间格局。从一环(1.61)到五环(2.01)多功能性整体上升,呈现中间低、外围高的分布特点。长春市城市森林的潜在主导功能是固碳和降温功能。本研究为长春市城市森林景观规划与管理提供了科学依据,有助于优化城市森林多功能、促进城市可持续发展。The assessment of the multifunctionality of urban forest landscapes is crucial for decision-making regar-ding landscaple allocation,optimization,and planning.Due to the high fragmentation and heterogeneity,it is a great challenge to scientifically evaluate the multifunctionality of urban forests and trade-offs/synergies.With Changchun City as the study area,we used plot surveys and remote sensing data to construct a model for estimating urban forest ecological functions.A multifunctional evaluation framework was proposed,which comprehensively considered both the quality and quantity of functions to quantitatively characterize the spatial patterns of multifunctionality and their trade-offs/synergies.The results showed that the annual carbon sequestration of urban forests in Changchun's built-up areas reached 36.78 t,with an average cooling effect of 0.96℃,an annual removal of PM_(2.5)reaching 527.52 t,and a recreational capacity of 50.08 people·m^(-2).Compared to the downtown,the suburban forests were stronger in carbon sequestration,air purification,and recreational functions,displaying a spatial distribution pattern that was lower in the interior and higher along the periphery.There was a significant trade-off between recreational functions and carbon sequestration and cooling functions,while carbon sequestration showed strong synergies with air purification and cooling functions.As urbanization varied,the trade-offs/synergies among functions displayed spatial heterogeneity,with carbon sequestration and cooling functions showing synergies in the city center and weak trade-offs in the suburbs.The multifunctionality of urban forest landscapes in Changchun performed optimally when the threshold was 25%,with high-value areas concentrated in the city's outer ring,exhibiting a stronger west and weaker east pattern.The multifunctionality generally increased from the 1^(st)ring road(1.61)to the 5^(th)ring road(2.01).Our results provide a scientific foundation for the planning and management of urban forest landscapes

关 键 词：景观功能 生态系统功能 多功能性 阈值法 权衡与协同 

分 类 号：TU9[建筑科学]