干旱区生态环境知识资源中心(Arid): 若尔盖高寒草地沙化对土壤活性有机碳组分的影响

Arid

	若尔盖高寒草地沙化对土壤活性有机碳组分的影响
其他题名	Effects of Desertification on Soil ActiveOrganic Carbon Fractions in ZoigeAlpine-cold Grassland
	费凯; 胡玉福; 舒向阳; 肖海华; 杨泽鹏; 何剑锋
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2016
卷号	30 期号:5 页码:327-330,336
中文摘要	为了解若尔盖高寒草地沙化对土壤活性有机碳组分的影响,采用空间代替时间的方法,通过野外土壤采集,并结合室内化验分析,研究了若尔盖高寒草原不同沙化阶段土壤有机碳及其活性组分的含量和变化特征。结果表明:沙化对高寒草地060cm土层土壤有机碳含量具有显著影响,随沙化程度加剧,土壤总有机碳、溶解性有机碳、易氧化有机碳和微生物量碳含量均呈现显著下降的特征,极重度沙化阶段较潜在沙化阶段分别减少了74.76%,80.24%,76.02%和83.24%;活性有机碳组分的损失较土壤总有机碳明显,其中微生物量碳含量的下降幅度最大;随土层深度的增加,沙化草地土壤有机碳含量及其变化量均呈下降趋势,其中,020cm土层土壤有机碳含量变化最为显著;土壤总有机碳、溶解性有机碳、易氧化有机碳和微生物量碳含量均呈极显著正相关关系(P<0.01)。
英文摘要	In order to reveal the effect of desertification on soil activeorganic carbon fractions in Zoige alpinecold grassland,the soil total organic carbon(TOC),dissolved organic carbon(DOC),easily oxidized organic carbon(EOC)and microbial biomass carbon(MBC)contents during the process of desertification were analyzed by space-for-time substitution.The results showed that the contents of SOC and its active fractions in 060cm depth in alpine-cold grassland significantly decreased during desertification,from potential desertification stage to severe desertification stage,the TOC,DOC,EOC and MBC decreased by 74.76%, 80.24%,76.02%and 83.24%,respectively.Compared with TOC,the loss of soil activeorganic carbon fractions were more obvious with the biggest decline observed in MBC,soil organic carbon contents in different degrees of desertification grassland and this variation showed a trend of decrease with the increase of soil depth,TOC,DOC,EOC and MBC decreased most significantly in the 020cm soil layer among all layers within 060cm.In the process of grassland desertification,TOC,DOC,EOC and MBC were highly significant correlation with each other(P<0.01).
中文关键词	沙化 ; 若尔盖高寒草地 ; 活性有机碳
英文关键词	desertification Zoige alpine-cold grassland activeorganic carbon
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5824690
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234986
作者单位	四川农业大学资源学院, 成都, 四川 611130, 中国
推荐引用方式 GB/T 7714	费凯,胡玉福,舒向阳,等. 若尔盖高寒草地沙化对土壤活性有机碳组分的影响[J],2016,30(5):327-330,336.
APA	费凯,胡玉福,舒向阳,肖海华,杨泽鹏,&何剑锋.(2016).若尔盖高寒草地沙化对土壤活性有机碳组分的影响.水土保持学报,30(5),327-330,336.
MLA	费凯,et al."若尔盖高寒草地沙化对土壤活性有机碳组分的影响".水土保持学报 30.5(2016):327-330,336.