中国科学院东北地理与农业生态研究所机构知识库
Advanced  
NEIGAE OpenIR  > 湿地与全球变化学科组  > 期刊论文
Title: The temperature sensitivity of organic carbon mineralization is affected by exogenous carbon inputs and soil organic carbon content
Author: S. S. Dai, L. J. Li, R. Z. Ye, X. Zhu-Barker and W. R. Horwath
Corresponding Author: 李禄军
Source: European Journal of Soil Biology
Issued Date: 2017
DOI: 10.1016/j.ejsobi.2017.06.010
Volume: 81, Pages:69-75
Abstract: Temperature sensitivity of organic carbon (C) mineralization is affected by C inputs, but predicting the magnitude of the response remains a challenge. We investigated how temperature and exogenous C inputs affected the apparent organic C mineralization in soils with a range of soil organic C (SOC) contents. Soils with 2.9, 4.0, and 6.8% SOC content were incubated with or without C sources (either plant residues or glucose), at two temperatures (15 or 25 degrees C) for 120 days. Apparent organic C mineralization was significantly affected by SOC content and C inputs. Cumulative CO2 production in soils with a higher SOC content was less sensitive to C inputs. Glucose was always more effective in stimulating CO2 production than plant residue. Without exogenous C inputs, the temperature sensitivity of organic C mineralization (described by Q(10) value) was higher in the 4.0% SOC soil (2.31) than in the 2.9% (1.12) and 6.8% SOC soils (130). The addition of exogenous C decreased Q(10) values by up to 131% in the 4.0% SOC soil, which was not observed in other two soils. In general, C inputs increased the Q(10) of the estimated active (C-a) and stable C (C-s) pools in all the tested soils, especially the C-s pool in the 4.0 and 6.8% SOC soils. Results indicated that the effect of C inputs on apparent organic C mineralization (either stimulatory or inhibitory) is influenced by SOC content and C source, and that temperature sensitivity of organic C mineralization in the presence of exogenous C is highly sensitive to SOC content. (C) 2017 Elsevier Masson SAS. All rights reserved.
WOS ID: WOS:000408076100010
Citation statistics:
Content Type: 期刊论文
URI: http://ir.iga.ac.cn/handle/131322/7570
Appears in Collections:湿地与全球变化学科组_期刊论文

Files in This Item:

There are no files associated with this item.

Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[S. S. Dai, L. J. Li, R. Z. Ye, X. Zhu-Barker and W. R. Horwath]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[S. S. Dai, L. J. Li, R. Z. Ye, X. Zhu-Barker and W. R. Horwath]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace