干旱区生态环境知识资源中心(Arid): 荒漠草原3种典型群落类型下土壤粒径分布与微生物量碳氮的关系

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	荒漠草原3种典型群落类型下土壤粒径分布与微生物量碳氮的关系
其他题名	Relationship between Soil Particle Size Distribution and Microbial Biomass Carbon and Nitrogen in 3 Typical Communities of Desert Grassland
	张义凡 1; 陈林1 ; 李学斌 2; 刘学东 1; 李月飞 1; 杨新国 1
来源期刊	西北植物学报
ISSN	1000-4025
出版年	2016
卷号	36 期号:12 页码:2513-2523
中文摘要	为了探讨不同群落类型的土壤粒径分布(PSD)与土壤微生物生物量(MB)的关系,以宁夏盐池荒漠草原3种典型群落类型(冰草、沙蒿、短花针茅)为研究对象,测定了不同群落2种生境(冠下、丛间)0~5、5~10和10~15 cm表土层土壤PSD和微生物量碳(MBC)、微生物量氮(MBN)含量变化,并分析了土壤颗粒组成中砂粒、粉粒和黏粒体积分数变化与土壤有机碳(SOC)、全氮(TN)和MBC、MBN间的关系。结果表明:(1)不同群落类型土壤粒径都呈倒V型分布趋势,但土壤退化最严重的沙蒿群落中100~500mum粒径颗粒含量相对较多,与其他两种群落形成显著差异。(2)不同群落类型SOC、MBC、MBN含量均随土层深度的增加而降低,同土层SOC、MBN含量均表现为冠下明显大于丛间,表现出肥岛效应,且0~5cm土层差异显著(P<0.05)。(3)对土壤粒径组成与土壤SOC、MBC、MBN间相关性研究表明,在土壤SOC、MBC和MBN含量较高的冰草、短花针茅群落类型中,0.01~2、 2~50和50~100mum土壤粒径的颗粒含量也高,SOC、MBC和MBN含量与<100mum的粉粒含量呈正相关关系;在沙蒿群落类型中粒径为100~250和250~500mum的土粒含量增高,导致其SOC、MBC和MBN含量较低,表明不同群落类型对土壤理化结构产生影响的同时,对微生物生物量也有显著的影响。
英文摘要	In order to explore the relationship between the soil particle size distribution(PSD)with the soi microbial biomass carbon and nitrogen(MBC,MBN)contents for different community types,we chose three typical communities,which in Yanchi County of Ningxia desert grassland as the research object,to determine the changing characteristic of soil PSD,the content of MBC and MBN in different soil layers(0 -5,5-10,10-15cm)of two soil habitat for different communities(Agropyron mongolicum Keng,Artemisia ordosica,Stipa breviflora).In addition,we analyzed the relationship between the composition of soil particles in sand,silt,clay particle volume fraction and the change of soil organic carbon(SOC),total nitrogen(TN)and MBC,MBN contents among different communities.The results showed that:(1)the soil particle size in different community types appeared tendency ofVtype distribution trend,but in Artemisia ordosicathe soil particle content of 100-500mum relatively more than that of other communities and has a significant difference.(2)The contents of soil SOC,MBC and MBN increased with the decreasing of soil depth,to a certain extent,in the same depth,the contents of soil SOC,MBN in canopy higher than that in pleous,which performed afertile island,and at soil depth of 0-5cm soil layer was significant difference(P<0.05).(3)The correlation relationship between the composition of soil particle with soil SOC,MBC,SOC and MBN contents indicated that:the contents of MBC and MBN are high in wheatgrass, Stipa breviflora,which have a similar tendency with soil particle size of 0.01-2mum,2-50mum, and 50-100mum.The contents of soil SOC,MBC and MBN were showed significant(P<0.05)correlation with the particle size lower than 100mum.The contents of soil particle diameter 100-250mum,250-500 mum in Artemisia community showed a increased tendency,which lead to the lower contents of SOC,MBC and MBN;therefore,our result demonstrated that different community types not only have an influence on soil particle size distribution,but also have a significant impact.
中文关键词	荒漠草原 ; 土壤粒径分布 ; 微生物量碳氮
英文关键词	desert steppe soil particle size distribution microbial biomass carbon and nitrogen
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5910737
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235168
作者单位	1.宁夏大学, 西北退化生态系统恢复与重建教育部重点实验室;;西北土地退化与生态恢复宁夏市省部共建国家重点实验室培育基地, 银川, 宁夏 750021, 中国; 2.宁夏大学科学技术处, 银川, 宁夏 750021, 中国
推荐引用方式 GB/T 7714	张义凡,陈林,李学斌,等. 荒漠草原3种典型群落类型下土壤粒径分布与微生物量碳氮的关系[J]. 宁夏大学,2016,36(12):2513-2523.
APA	张义凡,陈林,李学斌,刘学东,李月飞,&杨新国.(2016).荒漠草原3种典型群落类型下土壤粒径分布与微生物量碳氮的关系.西北植物学报,36(12),2513-2523.
MLA	张义凡,et al."荒漠草原3种典型群落类型下土壤粒径分布与微生物量碳氮的关系".西北植物学报 36.12(2016):2513-2523.