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Response of vegetation and soils to desertification of alpine meadow in the upper basin of the Yellow River, China

机译:中国黄河大盆地植被与土壤对荒漠化的响应

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Abstract Alpine meadow plays important roles in the animal production and conservation of water resources in the upper basin of Yellow River. In recent decades, desertification of this alpine meadow has resulted in changes in vegetation and soil features, as well as threatening the ecosystem functions and security. A field study was conducted to explain the response of vegetation pattern and soil features to desertification of alpine meadows. Results of vegetation studies indicated that hygrophytes were gradually replaced by mesophytes, xerophytes, and some annual psammophilous plants, and that cover and herbaceous biomass decreased along with the progressive desertification. Vegetation height increased in the slightly desertified stage, and then decreased in the very severe stage. Species diversity decreased, suggesting that desertification of alpine meadow contributedto species loss. This study also indicated that soil features gradually declined with increasing desertification of alpine meadow with soi...
机译:摘要阿尔卑斯山草甸在黄河上部盆地的动物生产和水资源保护中起重要作用。近几十年来,这种高山草甸的荒漠化导致了植被和土壤特征的变化,以及威胁生态系统功能和安全性。进行了一个田间研究以解释植被模式和土壤特征对阿尔卑斯植物草甸的荒漠化。植被研究的结果表明,湿润物逐渐被介性,杂皮物,血糖药物植物替代,覆盖和草本生物量随着渐进的荒漠化而降低。植被高度在略微荒漠化的阶段增加,然后在非常严重的阶段下降。物种多样性下降,表明阿尔卑斯山草甸的荒漠化导致物种损失。本研究还表明,土壤特征随着高山草甸的荒漠化而逐渐下降......

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