城市景观配置在树木提供水文生态系统服务方面的作用

IF 6.1 2区 环境科学与生态学 Q1 ECOLOGY
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引用次数: 0

摘要

通过减少径流生态系统服务(RRES),城市树木在缓解地表径流问题方面发挥着至关重要的作用,但这一作用正日益受到城市景观大范围改造的威胁。为确保减少径流生态系统服务的可持续性,了解景观配置如何影响该服务至关重要。本研究旨在对这种关系进行实证分析,确定城市景观配置的哪些方面对 RRES 影响最大。研究采用 i-Tree Eco 生态系统来量化 RRES。景观配置通过 FRAGSTATS 使用 11 个指标进行计算。通过建立基于逐步回归分析的模型,评估了景观配置的各个方面对 RRES 的影响,然后根据其影响强度进行了分类。结果表明,伊朗大不里士研究区的城市树木每年可减少 196.85 × 103 立方米的径流量。回归模型表明,归一化景观形状指数、聚集指数、有效网孔大小和丛生指数是径流减少效应的主要驱动因素(0.962 ≤ r2 ≤ 0.978)。景观划分、斑块密度、斑块凝聚力、穿插度和并置指数的影响适中(0.733 ≤ r2 ≤ 0.879)。相比之下,相似邻接百分比、分裂指数和斑块数量等因素的影响相对较小(0.569 ≤ r2 ≤ 0.667)。这些发现对城市规划者具有实际意义,强调了以聚集和毗连的模式安排斑块以改善 RRES 供应的重要性。最终,这项研究为有效的城市景观管理提供了宝贵的信息,确保了可再生生态系统的持续供应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The role of urban landscape configuration in the provision of hydrological ecosystem services by trees

The vital role of urban trees in mitigating surface runoff issues through the Runoff Reduction Ecosystem Service (RRES) is increasingly threatened by extensive modifications to the urban landscape. To ensure the sustainability of RRES, it is crucial to understand how landscape configuration affects it. This study aims to empirically analyze this relationship and determine which aspects of the urban landscape configuration impact RRES the most. The study applied the i-Tree Eco to quantify RRES. Landscape configuration was calculated using eleven metrics by FRAGSTATS. The impact of various aspects of landscape configuration on RRES was assessed by developing models based on stepwise regression analysis, which were then categorized based on their strength of influence. The results showed that urban trees in Tabriz, a study area in Iran, annually reduced runoff by 196.85 × 103 m3. The regression models underscored the significance of the normalized landscape shape index, the aggregation index, the effective mesh size, and the clumpiness index as the main drivers of RRES (0.962 ≤ r2 ≤ 0.978). Landscape division, patch density, patch cohesion, interspersion, and juxtaposition indexes had moderate impacts (0.733 ≤ r2 ≤ 0.879). In contrast, factors such as the percentage of similar adjacencies, the splitting index, and the number of patches had relatively lower impacts (0.569 ≤ r2 ≤ 0.667). These findings have practical implications for urban planners, emphasizing the importance of arranging patches in aggregated and contiguous patterns to improve RRES provision. Ultimately, this study provides valuable information for effective urban landscape management, ensuring a sustained supply of RRES.

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来源期刊
Ecosystem Services
Ecosystem Services ECOLOGYENVIRONMENTAL SCIENCES&-ENVIRONMENTAL SCIENCES
CiteScore
14.90
自引率
7.90%
发文量
109
期刊介绍: Ecosystem Services is an international, interdisciplinary journal that is associated with the Ecosystem Services Partnership (ESP). The journal is dedicated to exploring the science, policy, and practice related to ecosystem services, which are the various ways in which ecosystems contribute to human well-being, both directly and indirectly. Ecosystem Services contributes to the broader goal of ensuring that the benefits of ecosystems are recognized, valued, and sustainably managed for the well-being of current and future generations. The journal serves as a platform for scholars, practitioners, policymakers, and other stakeholders to share their findings and insights, fostering collaboration and innovation in the field of ecosystem services.
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