中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
苜蓿对旱地土壤有机碳氮变化的驱动作用

文献类型:期刊论文

作者杨洋 ; 王百群 ; 李玉进
刊名水土保持研究
出版日期2012
卷号19期号:03页码:78-81
关键词旱地 dryland 苜蓿 Alfalfa (Medicago sativa L.) 土壤有机碳 soil organic carbon 土壤全氮 soil total nitrogen 微粒有机质 particulate
其他题名Driving Effect of Alfalfa(Medicago sativa L.)on Dynamics of
中文摘要根据旱地长期定位试验和分离土壤有机质中微粒有机质及矿物结合有机质的方法,研究了长期生长苜蓿对土壤有机碳、全氮变化的驱动作用。结果表明:不施肥条件下,苜蓿地土壤有机碳、全氮的含量比裸地土壤中的含量明显增加,土壤有机碳和氮库中的微粒有机碳、氮的含量没有显著增加,而增加的有机碳、氮主要分布在矿物结合有机碳、氮组分中。在施用有机肥及氮、磷化肥条件下,苜蓿地土壤有机碳和全氮的含量显著地提高,增加的有机碳、氮几乎平均地分布在微粒有机碳、氮和矿物结合有机碳、氮组分中。由此表明,保持适宜的苜蓿生产力并采用合理的施肥措施,长期生长苜蓿能够有效地驱动土壤固定有机碳和氮素,从而保持和提高土壤肥力。
英文摘要Land use has a significant impact on change in soil organic carbon and nitrogen.The driving effect of alfalfa
(Medicago sativa L.)on the dynamics of soil organic carbon and nitrogen in dryland was studied based the long-term
field experiment and the method for separating the soil organic matter into particulate organic matter and mineral-associated
 organic matter.The level of soil organic carbon(SOC)and nitrogen in the land grown alfalfa without
fertilization increased compare with the bare land,the particulate organic carbon(POC)did not demonstrate
significant changes whereas the mineral-associated organic carbon(MOC)and nitrogen increased.The status
of SOC and N in the land grown alfalfa applied manure and N and P fertilizers showed significant increase
compared with that in the land grown alfalfa without fertilizer,and the increased organic carbon and nitrogen
distributed in the fraction of POC and MOC,respectively.These results suggest that applying the manure
and chemical fertilizer in the alfalfa land and keeping the rational alfalfa productivity is the sustainable way to
sequester organic carbon and nitrogen and to improve soil fertility in the semiarid area.
语种中文
公开日期2014-07-03
源URL[http://ir.iswc.ac.cn/handle/361005/5387]  
专题水土保持研究所_水保所知识产出(1956-2013)
推荐引用方式
GB/T 7714
杨洋,王百群,李玉进. 苜蓿对旱地土壤有机碳氮变化的驱动作用[J]. 水土保持研究,2012,19(03):78-81.
APA 杨洋,王百群,&李玉进.(2012).苜蓿对旱地土壤有机碳氮变化的驱动作用.水土保持研究,19(03),78-81.
MLA 杨洋,et al."苜蓿对旱地土壤有机碳氮变化的驱动作用".水土保持研究 19.03(2012):78-81.

入库方式: OAI收割

来源:水土保持研究所

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