道路干扰对种子传播及幼苗更新影响的研究进展
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作者单位:

1.三峡大学生物与制药学院;2.五峰土家族自治县林业局;3.三峡大学

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基金项目:

国家自然科学基金青年基金项目


A review of the impacts of road disturbance on seed dispersal and seedling regeneration
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Affiliation:

China Three Gorges University

Fund Project:

The National Natural Science Foundation of China

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    摘要:

    道路交通为人类提供便捷的同时也深刻地影响了道路周边的生态环境及其服务功能。其对环境的负面影响体现在:车辆产生的噪音、化学、光污染以及生态环境的破坏。此前,生态学家多关注道路对动物栖息地的破坏,但对于道路干扰对植物的影响研究尚少,道路对种子传播的影响结论尚不明晰,后续级联效应对幼苗更新的影响并不明确。因此,梳理了近30年来国内外关于道路干扰下植物种子传播及幼苗更新的研究,以厘清道路对动植物互作和植被更新所产生的影响。研究发现,道路明显干扰了动物介导的种子传播,主要表现为直接影响动物种群数量、道路的屏障作用,间接影响动物的行为和种子的传播距离;道路带来的物理、化学干扰、天敌作用等因素也显著地削弱了幼苗的更新与植物体后续生长和更新模式等。并且道路的影响还会带来一系列的级联效应。未来从研究方法上应该侧重考虑道路的干扰对生态系统的长期影响,进行更长久更深入的监测与观察;从研究内容上应将研究范围进一步扩大,更多考虑道路边缘与距离道路较远的生态系统之间的联系,以求探究道路干扰对更大尺度的生态系统植物群落的空间结构产生的深远影响。研究加深了关于道路干扰对植物种子传播及幼苗更新影响认识,并为全球气候变化背景下各类生态系统中的道路建设提供科学建议和理论支撑。

    Abstract:

    Road traffic, while providing convenience to human life, profoundly impacts the surrounding ecological environment and its service functions. The negative environmental effects of roads are manifested in vehicle-generated noise, chemical pollution, light pollution, and ecological disruption. Previously, ecologists have primarily studied road impacts regarding animal habitats, while relatively few studies have investigated the effects of road disturbances on plants. The influence of roads on seed dispersal remains inconclusive, and the subsequent cascading effects on seedling regeneration are not well understood. Therefore, this study reviewed studies from the past three decades, both domestically and internationally, concerning the effects of road disturbances on plant seed dispersal and seedling regeneration. The objective was to clarify the impact of roads on plant-animal interactions and vegetation regeneration.The findings indicate that roads significantly interfered with animal-mediated seed dispersal. This interference mainly occurred through direct reductions in animal population sizes, road-induced barrier effects, and indirect impacts on animal behavior and seed dispersal distances. Additionally, physical and chemical disturbances caused by roads, combined with predator influences, notably weakened seedling regeneration and subsequent plant growth patterns. These disturbances may have triggered cascading effects within the ecosystem.Looking forward, future research methods should prioritize examining the long-term impacts of road disturbances on ecosystems, emphasizing extended and more in-depth monitoring and observation. In terms of research content, the scope should be broadened to better understand the connections between road edges and ecosystems situated farther from roads. This approach would facilitate a more comprehensive exploration of how road disturbances influence the spatial structure of plant communities within larger-scale ecosystems.This study advances the understanding of how road disturbances impact plant seed dispersal and seedling regeneration, offering scientific insights and theoretical support for road construction within ecosystems under the context of global climate change.

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任天宇,肖春芳,陈健,卫涛,周友兵,邹大虎.道路干扰对种子传播及幼苗更新影响的研究进展.生态学报,,(). http://dx. doi. org/10.5846/stxb202412133075

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