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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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伊犁河谷不同植被带下土壤有机碳分布
DOI: 10.11821/xb201005009, PP. 605-612
Keywords: 土壤有机碳,植被,草地,伊犁
Abstract:
结合2008年和2009年野外实地调查与室内分析的资料,运用方差分析等方法对伊犁河谷高山草甸、草甸草原、典型草原、荒漠草原、温性针叶林等9种不同植被条件下的土壤有机碳含量分布及其储量进行了分析估算。研究结果表明伊犁河谷土壤有机碳含量因植被类型变化而不同。在0～50cm土层范围,高山草甸、草甸草原土壤有机碳含量较高,其次是温性针叶林和典型草原,含量最低的是隐域植被和荒漠植被土壤。除隐域植被外,各植被类型下土壤有机碳含量基本呈随着土层深度增加而降低的变化趋势。有机碳密度同样是高山草甸、草甸草原和温性针叶林土壤有机碳密度较高且比较相近,荒漠植被下土壤有机碳密度最低。伊犁河谷草地表层土壤有机碳含量高、密度大,因此应重视对伊犁河谷草地的保护,尤其要保护草地表层土壤以降低浅层土壤有机碳发生变化的可能性,维护土壤碳库的稳定性。
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