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Potential value of weedy regrowth for rainforest restoration

机译：杂草再生对雨林恢复的潜在价值

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摘要

In subtropical Australia, regrowth forests in former rainforest landscapes are often dominated by the exotic tree, Camphor Laurel (Cinnamomum camphora). In this paper, we report on research into the value of these regrowth stands for rainforest biota. Our initial surveys indicated that Camphor Laurel stands supported a similar number of rainforest animals as restoration plantings, and usually more than timber plantations. Subsequent surveys found that stands of Camphor Laurel supported a high diversity of fruit-eating birds and had recruited a diverse suite of rainforest plants. More recently, we surveyed stands of Camphor Laurel treated by restoration practitioners using 'patch' or 'selective' removal of exotic plants. We found that both treatment methods accelerated the recruitment of rainforest plants to Camphor Laurel stands, and that treatment was usually much cheaper than the cost of establishing restoration plantings. Recognition of the value of weedy regrowth for native plants and animals, and the potential utility of manipulating weedy regrowth to achieve cost-effective restoration, could increase the likelihood of achieving the large-scale increases in forest cover that will be needed to restore biodiversity and ecosystem services to extensively cleared regions.
机译：在澳大利亚的亚热带地区，以前的雨林景观中的再生林通常被异国情调的樟树月桂树（Cinnamomum camphora）所占据。在本文中，我们报告了有关这些再生林对雨林生物群落价值的研究。我们的初步调查表明，樟脑月桂树所支持的雨林动物数量与恢复种植的数量相似，通常比木材种植的数量更多。随后的调查发现，樟脑月桂树的林地支持多种多样的食果鸟类，并招募了多种雨林植物。最近，我们调查了恢复从业人员使用“补丁”或“选择性”去除外来植物对樟脑月桂的林分。我们发现，两种处理方法均加速了将雨林植物招募到樟脑月桂林，并且这种处理通常比建立恢复性种植的成本便宜得多。认识到杂草再生对于当地动植物的价值，以及操纵杂草再生以实现具有成本效益的恢复的潜在效用，可能会增加实现森林覆盖率大规模提高的可能性，这是恢复生物多样性和向广泛清理的地区提供生态系统服务。

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