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铁矿采矿迹地不同恢复年限的植被特征

闫德民1,赵方莹1,2**,孙建新1   

  1. 1北京林业大学林学院, 北京 100083; 2北京丰林源生态园林设计研究院有限公司, 北京 100083)
  • 出版日期:2013-01-10 发布日期:2013-01-10

Characters of the vegetations with different restoration age on a mining site of Shouyun Iron Ore Mine, Beijing.

YAN De-min1, ZHAO Fang-ying1,2**, SUN Jian-xin1   

  1. (1College of Forestry, Beijing Forestry University, Beijing 100083, China; 2Beijing Fenglinyuan Ecological Landscape Design Research Institute Co., Beijing 100083, China)
  • Online:2013-01-10 Published:2013-01-10

摘要: 1997—2011年利用覆盖客土、覆盖客土+生态植被毯措施对北京首云铁矿尾矿库进行植被恢复,本研究调查了不同恢复年限的植被特征,并与周边自然植被进行对比分析。结果表明:恢复植被以禾本科、豆科和菊科植物为主,占植物物种总数的58%;采用客土+生态植被毯恢复的植被多度、物种丰富度和Shannon指数均接近周边未扰动植被,高于仅覆盖客土恢复的植被;客土+生态植被毯恢复植被的地上和地下部分生物量显著高于仅覆盖客土的植被,与对照差异不显著;采用客土+生态植被毯措施恢复植被的枯落物生物量第6年达到对照水平。采矿迹地植被快速重建对北京市生态涵养发展区的潜在生态功能发挥具有重要的意义,为类似采矿迹地植被重建提供可借鉴的案例。

Abstract: In 1997-2011, a mining site of Shouyun Iron Ore Mine in Beijing was re-vegetated by the measures of covering with foreign topsoil (C) and its combination with ecological vegetation carpet (C+E). This paper investigated the characters of the vegetations with different restoration age on this site, in comparison with the undisturbed sites around this site (CK). The re-vegetation site was dominated by the species of Poaceae, Legume, and Compositae, accounting for 58% of the total species identified. In treatment C+E, the abundance, species richness, and Shannon index of the vegetations were all similar to those of the vegetations in CK, and higher than those in treatment C. The above- and under-ground biomasses of the vegetations in treatment C+E were significantly higher than those in treatment C, and had no significant differences with CK. In treatment C+E, the litter biomass of the vegetations in the 6th year was similar to that in CK. It was suggested that the rapid rehabilitation of vegetation on the mining site had significance for taking the advantage of the potential ecological functioning of the ecological conservation area in Beijing, and provide a reference case for the vegetation rehabilitation of similar mine areas.