干旱区生态环境知识资源中心(Arid): 荒漠草原3种典型群落类型的土壤微生物量碳氮研究

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	荒漠草原3种典型群落类型的土壤微生物量碳氮研究
其他题名	Soil Microbial Biomass Carbon and Nitrogen in 3Typical Communities of Desert Grassland
	张义凡 1; 刘学东 1; 陈林1 ; 李学斌 2; 杨新国 1
来源期刊	西北植物学报
ISSN	1000-4025
出版年	2017
卷号	37 期号:2 页码:363-371
中文摘要	采用氯仿熏蒸-浸提法,以宁夏盐池荒漠草原3种典型群落(柠条、沙蒿、短花针茅)类型为研究对象,分析了不同生境(冠下、丛间)和不同土层间(0~5、5~10、10~15cm)土壤理化性质及微生物量微生物量碳(MBC)和微生物量氮(MBN)的变化特征。结果表明:(1)3种群落土壤微生物量变化差异较大,柠条、沙蒿和短花针茅群落土壤MBC含量分别为77.00~393.18、17.27~221.71和81.05~173.37mg/kg,MBN含量分别为7.59~64.81、 1.43~13.95和4.25~22.13mg/kg,MBC和MBN含量均表现为:冠下>丛间,且随土层深度的增加而降低,有明显的沃岛效应。(2)群落类型对土壤微生物量碳氮含量的变化有显著影响,3种典型群落类型下土壤微生物量熵(qMB)、碳氮比(C/N)、微生物量碳氮比(MBC/MBN)分别在0.76~4.10、15.02~52.50、5.34~23.07范围内变化,其比值在不同生境和不同土层深度的分布特征有明显差异。(3)3种典型群落类型的土壤MBC与SOC、MBN、 qMB具有显著相关关系,土壤C/N与MBC/MBN呈显著正相关关系,表明土壤MBC、MBN具有一定的生物学指示特性,可以作为评价土壤质量的生物学指标。
英文摘要	Chloroform fumigation-extraction were employed to study the content of soil microbial biomass. We choose three typical communities which in Yanchi County of Ningxia desert grassland as the research object,to determine the changing characteristics of soil basic physical and chemical properties and soil microbial biomass carbon and nitrogen,in different soil layers(0-5,5-10,10-15cm)of two soil habitat in different communities(Caragana korshinskii,Artemisia ordosica,Stipa breviflora),The results show that:(1)the study area of C.korshinskii community,A.ordosicacommunity and S.brevifloracommunity of soil microbial biomass carbon(MBC)concentration range were 77.00-393.18,17.27-221.71 and 81.05-173.37mg/kg,soil microbial biomass nitrogen(MBN)concentration range were 7.59-64.81,1. 43-13.95and 4.25-22.13mg/kg,At the same time,the soil MBC and MBN have the same rule the content is continuously reduced with the depth increase which performedfertile islandand the canopy content is higher than that in plexus in the same depth.(2)Community types had significant effects on the changes of soil microbial biomass carbon and nitrogen contents.Under the 3typical communities,the content of the soil microbial biomass(qMB),carbon nitrogen ratio(SOC/TN)and microbial biomass carbon and nitrogen ratio(MBC/MBN)range were 0.76-4.10,15.02-52.50and 5.34-23.07,respectively. Analysis showed that the ratio in different habitats and different depth of soil layers has obvious difference, besides,the correlation of MBC,MBN,SOC,C/N and qMB in the soil of the 3typical communities reached significant or extremely significant level.(3)Considering the soil MBC,MBN and soil nutrient indexes have the same change trend,the soil MBC,MBN can evaluate the quality of the soil as a biological indicator on a degree.
中文关键词	荒漠草原 ; 典型群落 ; 微生物量碳 ; 微生物量氮
英文关键词	desert steppe typical community microbial biomass carbon microbial biomass 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:5948891
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/2XILL650/236811
作者单位	1.宁夏大学, 宁夏西北退化生态系统恢复与重建教育部重点实验室;;宁夏西北土地退化与生态恢复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,刘学东,陈林,等. 荒漠草原3种典型群落类型的土壤微生物量碳氮研究[J]. 宁夏大学,2017,37(2):363-371.
APA	张义凡,刘学东,陈林,李学斌,&杨新国.(2017).荒漠草原3种典型群落类型的土壤微生物量碳氮研究.西北植物学报,37(2),363-371.
MLA	张义凡,et al."荒漠草原3种典型群落类型的土壤微生物量碳氮研究".西北植物学报 37.2(2017):363-371.