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首页> 外文期刊>Ecological research >Nutrient relocation, hydrological functions, and soil chemistry in plantations as compared to natural forests in central Yunnan, China
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Nutrient relocation, hydrological functions, and soil chemistry in plantations as compared to natural forests in central Yunnan, China

机译：与云南中部天然林相比人工林的养分迁移，水文功能和土壤化学

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摘要

The relocation of nutrients among dominant plant species, along with hydrological functions and soil chemistry in five plant communities, including Eucalyptus plantation, Pinus plantation, shrubland, semi-natural, and natural secondary forests were investigated in central Yunnan, China. The nutrient P, N, and K accumulation in above-ground biomass of Eucalyptus smithii (stems, barks, branches, and leaves) were the highest, followed by Pinus yunnanensis of both the Pinus plantation and the semi-natural forest. The nutrient retranslocation efficiency (NRE) of E. smithii was the highest for nutrient P, N, and K with values of 56, 66, and 67%, respectively, among the dominant plant species of the five plant communities, while the NRE of P. yunnanensis in Pinus plantation had the second highest value of NRE for nutrient N. The nutrient content (available P, N, and soil organic matter) in the upper two soil layers under Eucalyptus and Pinus plantations was correspondingly found to be lower than that of the other forests. Moreover, under the Eucalyptus and Pinus plantations, surface runoff, soil erosion, and nutrient loss were more serious, and the water storage of litterfall and canopy interception were significantly lower than that in the other plant communities. Accordingly, we suggest that single-species plantations cannot present the same ecological benefits as natural forests, because of their simple, uniform structures, and the characteristics of the dominant plant species.
机译：在中国云南中部，调查了桉树人工林，松树人工林，灌木林，半天然林和天然次生林这五个植物群落中主要植物物种中养分的迁移以及水文功能和土壤化学。史密斯桉树（茎，树皮，树枝和树叶）的地上生物量中养分P，N和K的积累最高，其次是松树人工林和半天然林的云南松。在五个植物群落的优势植物种中，史密斯肠杆菌的养分迁移效率（NRE）最高，分别为P，N和K，分别为56、66和67％。松人工林中云南松的氮素N值第二高。在桉树和松人工林下两层土壤中的养分含量（可利用的P，N和土壤有机质）相应地低于该值。其他森林。此外，在桉树和松树人工林下，地表径流，土壤侵蚀和养分流失更为严重，凋落物和冠层截留的贮水量明显低于其他植物群落。因此，我们建议单种人工林由于其简单，统一的结构以及主要植​​物种类的特征而不能提供与天然林相同的生态效益。

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  • 来源
    《Ecological research》 |2010年第1期|139-148|共10页
  • 作者

    Xiuli Hou; Changqun Duan; Cindy Q. Tang; Denggao Fu;

  • 作者单位

    Institute of Environmental Science and Ecology Restoration, Yunnan University, 650091 Kunming, People's Republic of China;

    Institute of Environmental Science and Ecology Restoration, Yunnan University, 650091 Kunming, People's Republic of China;

    Institute of Environmental Science and Ecology Restoration, Yunnan University, 650091 Kunming, People's Republic of China;

    Institute of Environmental Science and Ecology Restoration, Yunnan University, 650091 Kunming, People's Republic of China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    biomass; floristic composition; nutrient accumulation; nutrient loss; surface runoff;

    机译：生物质植物组成养分积累;营养损失;地表径流;

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