干旱区生态环境知识资源中心(Arid): 荒漠草原典型植物群落土壤活性有机碳组分特征及其与酶活性的关系

Arid

	荒漠草原典型植物群落土壤活性有机碳组分特征及其与酶活性的关系
其他题名	Characteristics of Soil Labile Organic Carbon Fractions and Their Relationship with Soil Enzyme Activities in Four Typical Communities in Desert Steppe
	刘学东 1; 陈林1 ; 杨新国 1; 张义凡 1; 赵伟 1; 李学斌 2
来源期刊	西北植物学报
ISSN	1000-4025
出版年	2016
卷号	36 期号:9 页码:1882-1890
中文摘要	以宁夏荒漠草原典型植物柠条(Caragana korshinskii)、沙蒿(Artemisia ordosica)、短花针茅(Stipa breviflora)和蒙古冰草(Agropyron mongolicum)群落为研究对象,分析不同植物群落不同土层深度(0~5、5~10和10 ~15cm)土壤活性有机碳组分土壤微生物量碳(MBC)、可溶性有机碳(DOC)和易氧化有机碳(EOC)特征及其与土壤酶(蔗糖酶、脲酶、碱性磷酸酶和过氧化氢酶)活性之间的关系。结果表明:(1)4种典型植物群落土壤SOC、 MBC、EOC含量均随土层深度的增加而减少,且表层(0~5cm)土壤显著高于亚表层(5~10cm)和深层(10~ 15cm)土壤(P<0.05),而土壤DOC含量随土层深度的增加呈先增加后减少的趋势。在同一土层深度,灌木(柠条和沙蒿)群落土壤活性有机碳组分含量高于禾本科植物(短花针茅和蒙古冰草)。(2)4种典型植物群落土壤酶(蔗糖酶、脲酶、磷酸酶和过氧化氢酶)活性整体上随土层深度的增加而降低,局部土层深度表现出波动性;同一土层不同植被群落土壤酶活性未表现出一定的变化规律。(3)4种典型群落土壤活性有机碳各组分除DOC外,其余均与SOC呈显著正相关关系,与土壤酶活性、微生物量熵以及有机碳活度具有一定的相关关系,表明土壤活性有机碳不仅依赖于总有机碳,也与土壤酶活性密切相关。
英文摘要	In this study,we selected four typical communities:Caragana korshinskii,Artemisia ordosica, Stipabrevifloraand Agropyron mongolicumin desert steppe of Ningxia as the research objection,by analyzing the distribution characteristics of soil LOC fractions:microbial biomass carbon(MBC),dissolved organic carbon(DOC),and easy oxidation organic carbon(EOC)at different soil depths(0-5,5-10 and 10-15cm)in different community types,in order to probe into the relationship between soil LOC fractions and soil enzyme(invertase,urease,alkaline phosphatase and catalase)activities.Results show that: (1)the soil SOC and MBC,EOC content in four typical communities declined with the increasing of soil depth,which in surface layer(0-5cm)were significantly(P<0.05)higher than that in deep soil(5-10 and 10-15cm),whereas DOC content increased fristly and then decreased with the increasing of soil depth.In the same depth,the soil LOC fractions in shrub(C.korshinskii and A.ordosica)were higher than that in herbs(S.brevifloraand A.mongolicum);(2)The soil enzymes(invertase,urease,alkaline phosphatase and catalase)of four typical communities generally showed a declined trend with the increasing of soil depth,fluctuate appeared at local depth of soil,but at same layer,the soil enzyme activities did not presented the same distributioncharacter in different community types.(3)The soil LOC fractions of four typical communities except for DOC,other indicators were showed significant(P<0.05)correlation with SOC,and has a certain correlation with soil enzyme activities,microbial biomass entropy and organic carbon activity,which indicated that soil LOC fractions not only depend on the total organic carbon (TOC),but also closely related to soil enzyme activities.
中文关键词	荒漠草原 ; 土壤有机碳 ; 土壤有机碳活性组分 ; 酶活性
英文关键词	desert steppe soil organic carbon soil labile organic carbon fractions enzyme activity
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:5822470
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/2XILL650/235161
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省部共建国家重点实验室, 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	刘学东,陈林,杨新国,等. 荒漠草原典型植物群落土壤活性有机碳组分特征及其与酶活性的关系[J]. 宁夏大学,2016,36(9):1882-1890.
APA	刘学东,陈林,杨新国,张义凡,赵伟,&李学斌.(2016).荒漠草原典型植物群落土壤活性有机碳组分特征及其与酶活性的关系.西北植物学报,36(9),1882-1890.
MLA	刘学东,et al."荒漠草原典型植物群落土壤活性有机碳组分特征及其与酶活性的关系".西北植物学报 36.9(2016):1882-1890.