干旱区生态环境知识资源中心(Arid): 内蒙古退化荒漠草原土壤有机碳和微生物生物量碳含量的季节变化

Arid

	内蒙古退化荒漠草原土壤有机碳和微生物生物量碳含量的季节变化
其他题名	Seasonal variations of soil organic carbon and microbial biomass carbon in degraded desert steppes of Inner Mongolia
	吴永胜 1; 马万里 2; 李浩 2; 吕桂芬 2; 卢萍 2
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2010
卷号	21 期号:2 页码:312-316
中文摘要	为探明荒漠草原土壤有机碳(SOC)和微生物生物量碳(MBC)含量特征,分别在内蒙古达茂旗、四子王旗和苏尼特右旗设置样地,依次代表轻度、中度和重度退化草地,分析了不同样地表层土壤(0～20 cm)SOC和MBC含量变化及季节动态.结果表明:退化草地SOC和MBC含量均随草地退化程度增加而减小;除2006年夏季外,轻度、中度退化荒漠草地的土壤可培养微生物总数都高于重度退化荒漠草地;MBC含量和土壤可培养微生物总数均在夏秋季较高,春冬季较低.相关分析结果显示,SOC含量与MBC含量之间呈极显著正相关(P＜0.01),说明两者均可作为评价荒漠草原草地退化的敏感指标.
英文摘要	Sampling sites were installed in Damao Banner,Siziwang Banner,and Sunite Right Banner of Inner Mongolia,which represented lightly,moderately,and heavily degraded desert steppes,respectively,and surface(0-20 cm)soil samples were collected to analyze the quantitative characteristics and seasonal dynamics of soil organic carbon(SOC)and microbial biomass carbon(MBC)in these steppes.The SOC and MBC contents decreased with the increasing degradation degree of desert steppe.The total amount of soil culturable microbes in lighdy and moderately degraded desert steppes was higher than that in heavily degraded desert steppe,except in summer 2006,and the MBC content and the quantity of soil culturable microbes were higher in summer and autumn than in spring and winter.Correlation analysis showed that there was a significant positive correlation between SOC and MBC(P＜0.01),suggesting that both SOC and MBC could be used as the sensitive indicators to evaluate the degradation degree of desert steppe.
中文关键词	荒漠草原 ; 土壤有机碳 ; 微生物生物量碳
英文关键词	desert steppe soil organic carbon microbial biomass 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:3835698
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225853
作者单位	1.北京师范大学,资源学院, 北京 100875, 中国; 2.内蒙古师范大学,生命科学与技术学院, 呼和浩特, 内蒙古 010022, 中国
推荐引用方式 GB/T 7714	吴永胜,马万里,李浩,等. 内蒙古退化荒漠草原土壤有机碳和微生物生物量碳含量的季节变化[J]. 北京师范大学,2010,21(2):312-316.
APA	吴永胜,马万里,李浩,吕桂芬,&卢萍.(2010).内蒙古退化荒漠草原土壤有机碳和微生物生物量碳含量的季节变化.应用生态学报,21(2),312-316.
MLA	吴永胜,et al."内蒙古退化荒漠草原土壤有机碳和微生物生物量碳含量的季节变化".应用生态学报 21.2(2010):312-316.