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首页> 外文期刊>Wetlands >Recolonisation by Spontaneous Vegetation of a Rewetted Peatland after Topsoil Removal: a Focus on Biomass Production and Nutrient Uptake
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Recolonisation by Spontaneous Vegetation of a Rewetted Peatland after Topsoil Removal: a Focus on Biomass Production and Nutrient Uptake

机译：去除表层土壤后重新湿润的泥炭地的自然植被来重新定殖：以生物量生产和养分吸收为重点

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摘要

The ability of spontaneous vegetation to recolonise a Mediterranean peatland was investigated to assess the combined effect of rewetting and topsoil removal on restoration of a drained area. The experiment tested the concept of converting the cultivated area into a constructed wetland system (CWS) of five cells. A mixed approach was used based on orthophotos from an unmanned aerial vehicle, phytosociological surveys, and destructive samplings performed during the fourth summer after the CWS set-up. Two spontaneous species dominated: Phragmites australis (Cav.) Trin. ex Steud. and Typha latifolia L.. Distance of the CWS from the inlet influenced the biomass yield of P. australis, which progressively decreased (from 7.81 to 3.87 kg/m(2)) and thus influenced other parameters, such as nitrogen (N) and phosphorus (P) uptake per unit area (from 153 to 74 g N/m(2), from 13 to 7 g P/m(2)). Typha latifolia, with a mean production of 3.58 kg/m(2) (in the last two (4th and 5th) CWS cells), took up 51 g N/m(2) and 6 g P/m(2). From these data, we determined that plants took up 1144 kg of N and 103 kg of P in their aboveground biomass and were able to store nearly 25% of the nutrient loads yearly.
机译：研究了自发植被重新定殖地中海泥炭地的能力，以评估重新润湿和去除表土对排水区恢复的综合影响。实验测试了将耕地转换为五个单元的人工湿地系统（CWS）的概念。在建立CWS后的第四个夏季，基于无人驾驶飞机的正射影像，植物社会学调查和破坏性采样，使用了混合方法。两种自发物种占主导：芦苇（Travmites australis（Cav。）Trin）。前Steud。 CWS与进水口的距离影响了澳大利亚假单胞菌的生物量产量，该产量逐渐降低（从7.81降至3.87 kg / m（2）），从而影响了其他参数，例如氮（N）和单位面积的磷（P）吸收量（从153到74 g N / m（2），从13到7 g P / m（2））。香蒲的平均产量为3.58 kg / m（2）（在最后两个（第4和第5个）CWS单元中）占51 g N / m（2）和6 g P / m（2）。根据这些数据，我们确定植物的地上生物量吸收了1144 kg的氮和103 kg的P，每年能够存储近25％的营养负荷。

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  • 来源
    《Wetlands》 |2019年第5期|1079-1087|共9页
  • 作者

  • 作者单位

    Scuola Super Sant Anna Inst Life Sci Pisa Italy;

    Univ Pisa DAFE Via Borghctto 80 I-56124 Pisa Italy;

    Scuola Super Sant Anna Inst Life Sci Pisa Italy|Univ Pisa DAFE Via Borghctto 80 I-56124 Pisa Italy;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Phytotreatment; Phragmites; Typha; Drainage water; Nitrogen; Phosphorus;

    机译：植物处理;芦苇;香蒲排水;氮;磷;

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