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首页> 外文期刊>Ecosystems >The Role of Urban Structures in the Distribution of Wasteland Flora in the Greater Paris Area, France
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The Role of Urban Structures in the Distribution of Wasteland Flora in the Greater Paris Area, France

机译:法国大巴黎地区城市结构在荒原植物区系分布中的作用

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摘要

Wastelands are likely to host a significant part of urban floristic diversity but have received limited attention because they are not considered interesting green zones. Here, we explore the potential role of wastelands in maintaining urban biodiversity to help define effective urban management plans. We quantified floristic diversity in 98 wasteland sites of Hauts-de-Seine, one of the most densely populated areas in France, and characterized the environmental parameters and spatial distribution of sites to identify some of the factors that influence plant species composition and to explore the impact of urban environment on the floristic interest of wastelands. Their floristic richness represented 58% of the total richness observed in the whole study area. Site richness depended on site area (the largest sites were the richest) and site age, with a maximum in sites of intermediate age (4–13 years). In the largest sites only (>2,500 m2), the floristic distance among sites was positively correlated with geographic distance, which suggests that migration of species among large sites partly controls local floristic composition. In contrast, the environmental distance among sites was not correlated with floristic distance. Finally, we showed that the presence of collective and individual dwellings within 200 m of a wasteland decreased its floristic rarity, whereas the presence of rivers or ponds increased it. We derive several recommendations to optimize the management of wastelands with respect to conservation of urban biodiversity.
机译:荒地可能占据了城市植物多样性的很大一部分,但由于未被视为有趣的绿色区域,因此受到的关注有限。在这里,我们探索荒地在维护城市生物多样性方面的潜在作用,以帮助定义有效的城市管理计划。我们在法国人口最稠密的地区之一的Haus-de-Seine的98个荒地中量化了植物区系,并表征了环境参数和地点的空间分布,以识别影响植物物种组成的一些因素并探索城市环境对荒地植物区系利益的影响。他们的植物区系丰富度占整个研究区域内总丰富度的58%。网站的丰富度取决于网站的面积(最大的网站是最丰富的网站)和网站的年龄,在中间年龄(4-13岁)的网站中最多。仅在最大的站点(> 2,500 m2 )中,站点之间的植物区系距离与地理距离呈正相关,这表明大型站点之间的物种迁移部分控制了当地的植物区系组成。相反,站点之间的环境距离与植物区系距离无关。最后,我们表明,荒原200 m内集体和个体住宅的存在降低了其植物区系的稀有度,而河流或池塘的存在则增加了其稀有度。我们提出了一些建议,以在保护城市生物多样性方面优化荒地的管理。

著录项

  • 来源
    《Ecosystems》 |2007年第4期|661-671|共11页
  • 作者单位

    Conservatoire Botanique National du Bassin Parisien UMS Inventaire et Suivi de la Biodiversité Muséum National d’Histoire Naturelle 61 rue Buffon 75005 Paris France;

    Conservatoire Botanique National du Bassin Parisien UMS Inventaire et Suivi de la Biodiversité Muséum National d’Histoire Naturelle 61 rue Buffon 75005 Paris France;

    UMR 5173 Conservation des Espèces Restauration et Suivi des Populations Muséum National d’Histoire Naturelle 61 rue Buffon 75005 Paris France;

    Conservatoire Botanique National du Bassin Parisien UMS Inventaire et Suivi de la Biodiversité Muséum National d’Histoire Naturelle 61 rue Buffon 75005 Paris France;

    Conservatoire Botanique National du Bassin Parisien UMS Inventaire et Suivi de la Biodiversité Muséum National d’Histoire Naturelle 61 rue Buffon 75005 Paris France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Land use pattern; Indigeneity; Hauts-de-Seine; Isolation by distance; Plant diversity; Rarity; Urbanization;

    机译:土地利用格局;土著;塞纳河上;按距离隔离;植物多样性;稀有度;城市化;

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