IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Nitrogen addition reduces dissolved organic carbon leaching in a montane forest
Chang, Ruiying1; Li, Na2,3; Sun, Xiangyang1; Hu, Zhaoyong1; Bai, Xuesong1; Wang, Genxu1
Corresponding AuthorWang, Genxu(wanggx@imde.ac.cn)
2018
Source PublicationSOIL BIOLOGY & BIOCHEMISTRY
ISSN0038-0717
Volume127Pages:31-38
SubtypeArticle
AbstractDissolved organic carbon (DOC) plays a significant role in the forest soil carbon cycle and can be regulated by nitrogen (N) addition. However, the regulatory direction, mechanism and seasonal pattern of DOC under N addition are less clear. Here, in a montane evergreen forest located at the eastern edge of the Tibetan Plateau, 2 levels of N were applied over 2 years to determine the effects of N addition on DOC release from organic (O layer) and mineral soil. Frequent sampling revealed that high levels of N addition could decrease the concentration of DOC and the flux from the O layer but not from mineral soil and that moderate N addition had no effect on DOC leaching from either the O or mineral layer. The effect of N addition on DOC leaching from the O layer was seasonally dependent, showing a significant reduction in DOC leaching during autumn/winter but no changes during summer and spring. This seasonally different response of DOC to N addition affected the seasonal pattern of DOC leaching. Soil and leachate pH were not influenced by N addition in the short term, indicating that there was not enough difference in DOC retention by mineral soil to significantly affect DOC leaching under N addition. In contrast, N addition-derived reduction in DOC leaching was likely to be due to suppressed fresh litterfall-derived DOC production during autumn/winter; this speculation was supported by lower values of O layer water-extractable organic carbon and microbial biomass carbon as well as lower saccharase and cellulose activities found with high N addition. These results suggested that the processes in control of DOC leaching and their responses to N addition were different for O and mineral soil and that short-term N addition could decrease O-layer DOC leaching, which is likely associated with decreased DOC production rather than greater DOC retention.
KeywordAnthropogenic nitrogen deposition Zero-tension lysimeters Seasonal pattern DOC production DOC retention Extracellular enzyme activity
DOI10.1016/j.soilbio.2018.09.006
Indexed BySCI
WOS KeywordNORTHERN HARDWOOD FORESTS ; MICROBIAL BIOMASS-C ; SOIL SOLUTION ; MATTER DECOMPOSITION ; TEMPERATE FORESTS ; MINERAL SOIL ; DEPOSITION ; ECOSYSTEM ; LITTER ; DOC
Language英语
Quartile1区
Funding ProjectNational Key Research and Development Program of China[2016YFC0502105] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-DQC006] ; 135 Strategic Program of the Institute of Mountain Hazards and Environment, CAS[SDS-135-1702] ; Youth Innovation Promotion Association CAS[2018406] ; Natural Science Foundation of China[41301219]
TOP
WOS Research AreaAgriculture
WOS SubjectSoil Science
WOS IDWOS:000449895600004
Funding OrganizationNational Key Research and Development Program of China ; Key Research Program of Frontier Sciences, CAS ; 135 Strategic Program of the Institute of Mountain Hazards and Environment, CAS ; Youth Innovation Promotion Association CAS ; Natural Science Foundation of China
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/24374
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorWang, Genxu
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolvement & Regulat, Chengdu, Sichuan, Peoples R China
2.Chinese Acad Sci, Chengdu Inst Biol, CAS Key Lab Mt Ecol Restorat & Bioresource Utiliz, Chengdu, Sichuan, Peoples R China
3.Chinese Acad Sci, Chengdu Inst Biol, Ecol Restorat & Biodivers Conservat Key Lab Sichu, Chengdu, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Chang, Ruiying,Li, Na,Sun, Xiangyang,et al. Nitrogen addition reduces dissolved organic carbon leaching in a montane forest[J]. SOIL BIOLOGY & BIOCHEMISTRY,2018,127:31-38.
APA Chang, Ruiying,Li, Na,Sun, Xiangyang,Hu, Zhaoyong,Bai, Xuesong,&Wang, Genxu.(2018).Nitrogen addition reduces dissolved organic carbon leaching in a montane forest.SOIL BIOLOGY & BIOCHEMISTRY,127,31-38.
MLA Chang, Ruiying,et al."Nitrogen addition reduces dissolved organic carbon leaching in a montane forest".SOIL BIOLOGY & BIOCHEMISTRY 127(2018):31-38.
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