安徽省几种主要土壤有机碳含量及其组分研究  

Soil Organic Carbon and Its Fraction in Anhui Province

作　　者：石玲[1,2] 戴万宏[1] 

机构地区：[1]安徽师范大学环境科学学院,安徽芜湖241000 [2]阜阳市国土资源局,安徽阜阳236025

出　　处：《水土保持通报》2010年第2期145-149,共5页Bulletin of Soil and Water Conservation

基　　金：安徽教育厅自然科学基金(2006kj211B);安徽师范大学博士基金和专项研究基金(2005XZX20)

摘　　要：研究了安徽省4种主要类型土壤(砂姜黑土、潮土、水稻土和红壤)有机碳(SOC)、可溶性有机碳(DOC)和微生物量碳(MBC)的含量剖面分布及其相互关系。结果表明,4种土壤SOC,DOC和MBC含量存在明显差异,但其剖面分布规律基本一致,表层含量较高,随着土壤层次加深而依次递减;表层土壤SOC含量顺序为:水稻土>砂姜黑土>潮土>红壤,DOC含量顺序为:砂姜黑土>潮土>水稻土>红壤,MBC含量顺序为:潮土>砂姜黑土>红壤>水稻土。DOC和MBC分别只占SOC的4.92%～18.97%和1.86%～5.68%。土壤SOC,DOC与MBC之间存在着密切的关系,3者之间的相关性均分别达到了10%,5%或1%的显著或极显著水平。The contents of soil organic carbon （SOC）, dissolved organic carbon （DOC）, and microbial biomass carbon （MBC）, as well as profile distribution and its relationships in the four main soil types （Lime concretion black soils （LS）, Fluve-aquic soils （FS）, Paddy soils （PS）, and Red soils （RS）） in Anhui Province are studied. Results showed that the contents of SOC, DOC, and MBC were significantly different in the four soils, but the trend of their profile distributions was basically the same. The contents in topsoil were higher and decreased with soil depth increasing. The orders of SOC, DOC, and MBC in topsoil were PS〉LS 〉FS〉RS, LS〉FS〉PS〉RS, and FS〉LS〉RS〉PS, respectively. DOC and MBC were only a small part of SOC. The percentages of DOC and MBC over SOC were in the range from 4.92% to 18.97% and from 1.86% to 5.68%, respectively. There was a close relation among SOC, DOC, and MBC. The relationships between SOC and DOC, between SOC and DOC, and between DOC and MBC were all significant or very sig- nificant at 10%, 5% or 1% level, respectively.

关 键 词：土壤有机碳 可溶性有机碳 微生物量碳 安徽省 

分 类 号：S153.6[农业科学—土壤学]