| 摘要: |
| 城市化进程中自然栖息地的锐减是导致生物多样性缺失的直接原因。当前保留年份较久的残存栖息地可作为“核心生境”在城市生态系统服务功能中发挥重要作用。以韩国首尔特别市为例，基于4期解译后的卫星图像判别城市林地内的“核心生境”，并选取22个城市公园作为样本，运用Fragstats工具和InVEST模型分别计算景观格局指数和生境质量指数，模拟了林地生境质量和影响其变化的主导景观格局因子。研究发现：1）毗邻建设用地的林地生境质量指数明显低于城市边缘山区；2）面积对于生境单元值的影响具有尺度差异性，相对于较大尺度样本，中小尺度样本的“核心生境”单元值受面积影响较小；3）样本生境的景观格局对“核心生境” 质量的主导影响可概括为绿地形状因子和绿地聚合因子（因子分析解释度为96.022%），且具有显著的线性回归关系。 |
| 关键词: 风景园林 城市生物多样性 城市绿色基础设施 城市生态系统服务 InVEST模型 |
| DOI：10.14085/j.fjyl.2020.02.0083.05 |
| 分类号:TU986 |
| 基金项目: |
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| Effects of Landscape Patterns of Urban Green Spaces on “Core Habitat” Quality |
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HAN Yiwen1, LI Yingnan2, LI Fangzheng3
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1.Huazhong University;2.Jiangsu University;3.Beijing Forestry University
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| Abstract: |
| The sharp decline in natural habitats in the process of urbanization is the direct cause of biodiversity loss. The historical remnant habitats can be seen as the “core habitats” which play an important role in supporting urban ecosystem services. Using Seoul (the capital of South Korea ) as a case study, we firstly identified the “core habitats” through 4 years land-use and land-cover maps and selected 22 sample parks, then quantified landscape metrics and habitat quality using Fragstat software and InVEST model. The results show that: 1) The habitat quality of forest-habitats adjacent to the built-up areas is significantly lower than that of the areas in urban fringe. 2) The effects of habitat sizes on the values of habitat units indicate the scale-dependence. Compared with the large-scale sample patches, the “core habitat” unit values of small-scale and medium-scale patches are less affected by their size. 3) The main impact of the landscape pattern of sample habitats on the quality of “core habitats” can be summarized as the factors of shape and the factors of aggregation (the interpretation degree of the factor analysis is 96.022%), featuring a significant linear regression relationship. |
| Key words: landscape architecture urban biodiversity urban green infrastructure urban ecosystem services InVEST model |
| 引用本文: | 韩依纹,李英男,李方正.城市绿地景观格局对“核心生境”质量的影响探究[J].风景园林，2020，27（2）：83-87. |
| HAN Yiwen,LI Yingnan,LI Fangzheng.Effects of Landscape Patterns of Urban Green Spaces on “Core Habitat” Quality[J].Landscape Architecture Journal, 2020, 27(2):83-87. |
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