道路对山西铁桥山保护区赤狐和豹猫时空分布的影响
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国家重点研发计划重点专项项目(2023YFF1305000);国家自然科学基金项目(32370540)


Effects of roads on spatiotemporal distribution of red foxes (Vulpes vulpes) and leopard cats (Prionailurus bengalensis) in Shanxi Tieqiaoshan Nature Reserve
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    摘要:

    道路作为嵌套在景观中的线性人类基础设施,对野生动物的生存具有广泛影响。理解同域分布的物种对道路的差异化响应机制,以及生境因子的异质性分布如何影响物种对道路的耐受性,能够为通过生境改造缓解道路对野生动物影响和调整种间关系提供关键信息,却很少被关注。对此,于2022年11月-2024年10月在山西铁桥山省级自然保护区按距离梯度布设红外相机收集数据,分别量化了县道X337对赤狐(Vulpes vulpes)和豹猫(Prionailurus bengalensis)空间分布和日活动节律的影响,并运用地理加权回归(Geographically Weighted Regression,GWR)模型探究生境因子的异质性分布如何影响目标物种的道路容忍度。研究结果显示,县道对赤狐和豹猫的影响域均为300 m,但赤狐在影响域内的相对多度显著高于影响域外(P<0.05),豹猫表现出相反的趋势且其在影响域内外的日活动节律具有显著差异。GWR模型结果表明,相较于豹猫,赤狐与各环境变量的关系具有更强的空间非平稳性,能够更灵活地调整活动模式以耐受道路的干扰。这均说明,赤狐对道路干扰的容忍程度比豹猫更高。此外,空间插值后得到的各变量回归系数的空间分布图显示,海拔、植被覆盖等变量对动物分布的正作用随距县道距离的减小呈递增趋势,表明自然环境因素一定程度上有助于动物容忍县道干扰。研究揭示了人类改造景观对动物时空分布的不同影响,强调GWR模型能够有效显示野生动物分布与环境变量间关系的空间异质特征,为理解同域物种对道路干扰的耐受机制提供新的见解。

    Abstract:

    As linear anthropogenic infrastructure embedded within natural landscapes, roads had extensive impacts on wildlife survival via habitat fragmentation, behavioral avoidance, and increased mortality risks from vehicle collisions. Understanding the differential responses of sympatric species to roads, and how heterogeneous distribution of habitat factors affected the tolerance of species to roads could provide important information for mitigating the impact of roads on wildlife and adjusting interspecies relationships through habitat rehabilitation. However, this aspect remained poorly explored. To address this gap, from November 2022 to October 2024, we deployed camera traps along distance gradients in Shanxi Tieqiaoshan Provincial Nature Reserve to collect data, quantifying the impact of the county road X337 on spatial distribution and alterations in daily activity rhythms for red foxes (Vulpes vulpes) and leopard cats (Prionailurus bengalensis) respectively. Using a geographically weighted regression (GWR) model, we investigated how the heterogeneous distribution of habitat factors affected the road tolerance of the target species. Our findings showed that the county road exerted a 300-meter effect zone on both red foxes and leopard cats. However, red foxes exhibited significantly higher relative abundance within the effect zone compared to areas outside this threshold (P<0.05). In contrast, leopard cats demonstrated the opposite trend and showed notably different daily activity rhythms inside versus outside the effect zone. The results of the GWR model indicated that the relationship between red foxes and environmental variables exhibited stronger spatial non-stationarity than that of leopard cats, suggesting red foxes had a greater ability to adapt their activity patterns to road interference. These results demonstrated that red foxes exhibit significantly higher tolerance of road disturbances than leopard cats. Furthermore, the spatial distribution map of regression coefficients for each variable, obtained through spatial interpolation, showed that the positive effects of factors like altitude and vegetation coverage on wildlife distribution increase as the distance from the county road decreases. This indicated that when animals were active near roads, they tended to choose locations with higher elevation and more dense vegetation to avoid road disturbances. In other words, the result implied that natural environmental factors partially facilitated wildlife's tolerance of road disturbances. The study revealed the impacts of human-modified landscapes on the animal spatial-temporal distributions and highlighted the effectiveness of the GWR model in uncovering spatial heterogeneity in wildlife-environment relationships. These findings provided novel insights into the tolerance mechanisms of sympatric species to road disturbances.

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乔尚纯,翟鹏辉,齐进哲,刘保庄,梁轩恺,郝珏,景慧玉,李瑞平,姜广顺.道路对山西铁桥山保护区赤狐和豹猫时空分布的影响.生态学报,2026,46(2):1114~1125

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