城市森林景观多功能性及权衡协同关系

doi:10.13287/j.1001-9332.202503.027

应用生态学报 ›› 2025, Vol. 36 ›› Issue (3): 837-846.doi: 10.13287/j.1001-9332.202503.027

城市森林景观多功能性及权衡协同关系

郭玉洁^1,2, 任志彬^3,4, 何兴元^1,2,4,5*

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

收稿日期:2024-10-13 接受日期:2025-01-09 出版日期:2025-03-18 发布日期:2025-05-15
通讯作者: * E-mail: hexy@iae.ac.cn
作者简介:郭玉洁, 女, 1995年生, 博士后。主要从事城市森林生态功能研究。 E-mail: guoyujie0619@163.com
基金资助:
国家自然科学基金重点项目(32130068)

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

GUO Yujie^1,2, REN Zhi-bin^3,4, HE Xingyuan^1,2,4,5*

¹Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
²CAS Key Laboratory of Forest Ecology and Silviculture, Institute of Applied Ecology, Chinese Aca-demy of Sciences, Shenyang 110016, China;
³Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;
⁴University of Chinese Academy of Sciences, Beijing 100049, China;
⁵Shenyang Arboretum, Chinese Academy of Sciences, Shenyang 110016, China

Received:2024-10-13 Accepted:2025-01-09 Online:2025-03-18 Published:2025-05-15

摘要/Abstract

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。

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

Abstract: 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 in Changchun, contribute to the optimization of urban forest multifunctionality, and promote sustainable urban development.

Key words: landscape function, ecosystem service, multifunctionality, threshold method, trade-offs/synergies

郭玉洁, 任志彬, 何兴元. 城市森林景观多功能性及权衡协同关系[J]. 应用生态学报, 2025, 36(3): 837-846.

GUO Yujie, REN Zhi-bin, HE Xingyuan. Multifunctionality of urban forest landscapes and their trade-offs and synergies[J]. Chinese Journal of Applied Ecology, 2025, 36(3): 837-846.

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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

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