青海共和盆地不同人工灌木群落土壤碳密度研究

发布时间：2018-03-06 16:45

  本文选题：共和盆地　切入点：人工灌木林　出处：《土壤》2016年02期 　论文类型：期刊论文

【摘要】：共和盆地高寒沙区植被恢复区4种典型人工灌木林是柠条(Caragana korshinskii)、沙棘(Hippophae rhamnoides)、沙柳(Salix psammophila)和乌柳(Salix cheilophila)。土壤有机碳密度调查研究表明,不同灌木群落类型下的土壤有机碳密度(0~100 cm)由大到小是:沙棘9.42 kg/m2、沙柳6.73 kg/m2、乌柳6.06 kg/m2、草地4.56 kg/m2、柠条3.67 kg/m2。不同灌木林地0~100 cm土壤质地和分层状况不同,土壤有机碳含量随着土壤深度增加而减少,表层(0~10 cm)含量最高。与对照样地草地相比,位于丘间地的林地土壤有机碳含量均有不同程度的提高。
[Abstract]:Four typical artificial shrubs in the vegetation restoration area of the alpine sandy region of the Gonghe Basin are Caragana korshinskiike, Hippophae rhamnoidesus, Salix psammophila) and Salix cheilophila. The investigation of soil organic carbon density shows that the soil organic carbon density of Caragana korshinskiii, Hippophae rhamnoidesus, Salix psammophila and Salix cheilophila are studied. The soil organic carbon density of different shrub communities ranged from large to small: Hippophae rhamnoides 9.42 kg / m2, Salix willow 6.73 kg / m ~ 2, Salix willow 6.06 kg 路m ~ 2, grassland 4.56 kg 路m ~ (2), Caragana korshinskii 3.67 kg / m ~ (2). Soil texture and stratification were different in different shrub land (0 ~ (100) kg / m ~ (2)). The content of soil organic carbon decreased with the increase of soil depth, and the content of soil organic carbon was the highest in the surface layer (0 ~ 10 cm). Compared with the grassland of the same land, the soil organic carbon content of the woodland in the hilly land increased to some extent.
【作者单位】： 中国林业科学研究院荒漠化研究所;
【基金】：国家“十二五”科技支撑课题项目(2012BAD16B0105) 林业行业公益项目(201404304) 国家自然科学基金项目(41130640)资助
【分类号】：S714.2
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本文编号：1575647