干旱区生态环境知识资源中心(Arid): 半干旱地区不同土壤团聚体中微生物量碳的分布特征

Arid

	半干旱地区不同土壤团聚体中微生物量碳的分布特征
其他题名	Distribution Characteristics of Microbial Biomass Carbon in Different Soil Aggregates in Semi-arid Area
	文倩; 赵小蓉; 陈焕伟; 妥德宝; 林启美
来源期刊	中国农业科学
ISSN	0578-1752
出版年	2004
卷号	37 期号:10 页码:1504-1509
中文摘要	在半干旱地区采集7个不同利用方式的土样,利用干筛法获得不同粒径的团聚体,并分析其有机碳、微生物量碳和K2SO4浸提碳含量.结果显示,有机碳含量最高的土壤其大团聚体占的比例也最高;未筛分土壤的微生物量碳以灌溉耕地最高、油菜-土豆轮作旱地最低,分别为336和189 mg·kg-1.团聚体微生物量碳含量为153～324 mg·kg-1.灌溉耕地土壤＞5 mm团聚体最高,草地土壤＜0.25 mm团聚体最低.土壤有机碳和微生物量碳在大团聚体(＞2 mm)中的含量相对都高于小团聚体.微生物量碳与土壤有机碳极显著相关,与K2SO4浸提碳不相关.与微生物量碳相反,K2SO4浸提碳含量在＜1 mm的团聚体中相对较高.
英文摘要	Seven soil samples under different managements were collected from semi-arid area of Inner Mongolia. Soil aggregates were obtained with dry sieving method. The contents of organic C and microbial biomass C were analyzed. The results showed that the soil with highest content of organic C had the highest proportion of large soil aggregates. The content of microbial biomass C in whole soil was highest in irrigated soil and was lowest in cole-potato rotation soil,and the amounts were 336 and 189 mg·kg~(-1), respectively. Soil microbial biomass C in aggregates ranged from 153 to 324 mg·kg~(-1), and it was highest in the >5 mm fraction of irrigated soil but lowest in the < 0.25 mm fraction of grassland soil. There was a close correlation between soil organic C and microbial biomass C. The large aggregates (>2 mm) contained more higher amounts of both the soil organic C and microbial biomass C than the small aggregates. No significant correlation was found between soil microbial biomass C and K2SO4-extracable C. The small aggregates contained much higher K_2SO_4-extxacable C than the large aggregates. No significant correlation was found between soil microbial biomass C and K2SO4-extracable C.
中文关键词	土壤团聚体 ; 微生物量碳 ; 半干旱地区
英文关键词	Soil aggregate Microbial biomass C Semi-arid area
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture
CSCD记录号	CSCD:1847518
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205710
作者单位	文倩, 中国农业大学资源与环境学院, 北京 100094, 中国.; 赵小蓉, 中国农业大学资源与环境学院, 北京 100094, 中国.; 陈焕伟, 中国农业大学资源与环境学院, 北京 100094, 中国.; 林启美, 中国农业大学资源与环境学院, 北京 100094, 中国.; 妥德宝, 内蒙古农业科学院分析中心, 呼和浩特, 内蒙古 010010, 中国.
推荐引用方式 GB/T 7714	文倩,赵小蓉,陈焕伟,等. 半干旱地区不同土壤团聚体中微生物量碳的分布特征[J]. 中国农业大学,2004,37(10):1504-1509.
APA	文倩,赵小蓉,陈焕伟,妥德宝,&林启美.(2004).半干旱地区不同土壤团聚体中微生物量碳的分布特征.中国农业科学,37(10),1504-1509.
MLA	文倩,et al."半干旱地区不同土壤团聚体中微生物量碳的分布特征".中国农业科学 37.10(2004):1504-1509.