整合物种分布和片断线性回归模型,确定功能连通性阈值,划定城市生态走廊

IF 7.1 1区 地球科学 Q1 ENVIRONMENTAL STUDIES Computers Environment and Urban Systems Pub Date : 2024-08-21 DOI:10.1016/j.compenvurbsys.2024.102177
Haoran Yu , Hanwen Xiao , Xinchen Gu
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引用次数: 0

摘要

城市生态走廊对城市的可持续发展至关重要,但确定其宽度仍具有挑战性。本文针对这一问题,重点研究了城市树冠下鸟类对栖息地的独特要求。我们采用物种分布模型模拟了它们在上海的潜在生存空间,并量化了它们在城市流动中的功能连接性。然后,我们使用分段线性回归模型来识别不同缓冲区(代表走廊的物理宽度)内功能连接的转折点。我们的研究结果表明,与地表温度、土地覆被类型和植被冠层高度相比,城市冠层下鸟类对人类活动和建筑物分布的敏感度较低。我们还发现,传统的线性加权方法往往会高估环境因素对树冠下鸟类的影响,从而导致走廊路径识别出现细微偏差。最后,我们证明采用分段线性回归法有助于量化每条城市生态走廊的功能连接转折点,从而确定其物理宽度范围。这项研究首次尝试从树冠下鸟类的角度对城市生态走廊的功能连通性进行量化评估,并划定其范围。
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Integrating species distribution and piecewise linear regression model to identify functional connectivity thresholds to delimit urban ecological corridors

Urban ecological corridors are essential for sustainable urban development, but determining their width remains challenging. This paper addresses this issue by focusing on the unique habitat requirements of urban undercanopy bird species. We employ Species Distribution Model to simulate their potential living spaces in Shanghai and quantify their functional connectivity in urban mobility. We then use segmented linear regression models to identify turning points in functional connectivity within different buffer zones, which represent the physical width of the corridor. Our findings show that urban undercanopy birds are less sensitive to human activity and building distribution compared to surface temperature, land cover types, and vegetation canopy height. We also find that conventional linear weighting methods tend to overestimate the impact of environmental factors on undercanopy birds, leading to subtle deviations in corridor path recognition. Finally, we demonstrate that employing segmented linear regression helps to quantify the turning points of functional connectivity for each urban ecological corridor, allowing us to determine their physical width range. This study is the first attempt to quantitatively assess the functional connectivity of urban ecological corridors from the perspective of undercanopy birds and demarcate their extent.

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来源期刊
CiteScore
13.30
自引率
7.40%
发文量
111
审稿时长
32 days
期刊介绍: Computers, Environment and Urban Systemsis an interdisciplinary journal publishing cutting-edge and innovative computer-based research on environmental and urban systems, that privileges the geospatial perspective. The journal welcomes original high quality scholarship of a theoretical, applied or technological nature, and provides a stimulating presentation of perspectives, research developments, overviews of important new technologies and uses of major computational, information-based, and visualization innovations. Applied and theoretical contributions demonstrate the scope of computer-based analysis fostering a better understanding of environmental and urban systems, their spatial scope and their dynamics.
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