收稿日期: 2003-06-30
修回日期: 2004-05-15
网络出版日期: 2004-07-10
基金资助
theKnowledgeInnovationProgramoftheChineseAcademyofSciences(KZCX1SW01,KZCX1SW19,KZCX3SW332)
Limitation of Available Carbon on MicrobialRespiration in the Calamagrostis angustifolia Soil-A Case Study in Sanjiang Plain*
Received date: 2003-06-30
Revised date: 2004-05-15
Online published: 2004-07-10
徐小锋 , 宋长春 , 宋霞 . 小叶章湿地土壤可利用性碳对微生物呼吸的限制作用——三江平原为例(英文)[J]. 中国科学院大学学报, 2004 , 21(4) : 538 -542 . DOI: 10.7523/j.issn.2095-6134.2004.4.017
The limitation of carbon availability on microbial respirat ion was studied in the Calamagrostisangustifolia soil in Sanjiang Plain. The results suggest that carbon availability limits the microbialrespirat ion in root layer soil and subsoil initially, whereas it does not limit the microbial respiration after115 h incubation for recovery from the disturbance in physical, chemical and biological structure causedby sampling from the field, then after 5 h incubation when the labile carbon has been mineralized theavailable carbon limits the microbial respiration again. At the same time the results show that the soilorganic matter affects carbon availability index significantly when its value is lower than 10%, but theeffect is little when the soil organic matter is higher than 10%. The microbial biomass carbon is linearlycorrelated with carbon availability in the Calamagrostis angustifolia soil.
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