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Contrasting effects of ectomycorrhizal and arbuscular mycorrhizal tropical tree species on soil nitrogen cycling: the potential mechanisms and corresponding adaptive strategies
Lin, Guigang1,2; Guo, Dali3,4; Li, Liang3,4; Ma, Chengen3,4; Zeng, De-Hui1,2
2018-04-01
Source PublicationOIKOS
ISSN0030-1299
Volume127Issue:4Pages:518-530
Corresponding AuthorLin, Guigang(linguigang@126.com)
AbstractWhile it is increasingly recognized that ectomycorrhizal (ECM) and arbuscular mycorrhizal (AM) tree species vary in their effects on soil nitrogen (N) cycling, little is known about the mechanisms causing and how ECM and AM trees adapt to this variation. Using monoculture plots of six ECM and eight AM tropical trees planted in a common garden, we examined whether the contrasting effects of ECM and AM trees on soil N cycling could be explained by their differences in plant traits. Furthermore, rhizosphere effects on soil N transformations and soil exploration by fine roots were also measured to assess whether ECM and AM trees differed in N acquisition capacities. Results showed that soil NH4+-N concentration, net N mineralization and net nitrification rates were markedly lower, but soil C:N ratio was significantly higher beneath ECM trees than beneath AM trees. This more closed N cycling caused by ECM trees was attributed to their resource-conservative traits, especially the poorer leaf litter decomposability compared with AM trees. To adapt to their induced lower soil N availability, ECM trees were found to have greater rhizosphere effects on NO3--N concentration, net N mineralization and net nitrification rates to mine N, and higher soil exploration in terms of root length density to scavenge N from soils, indicating that these two strategies work in synergy to meet N demand of ECM trees. These findings suggest that ECM and AM trees have contrasting effects on soil N cycling owing to their differences in leaf litter decomposability and correspondingly possess different N acquisition capacities.
DOI10.1111/oik.04751
WOS KeywordROOT-INDUCED CHANGES ; ECOSYSTEM PROCESSES ; PLANT TRAITS ; RAIN-FOREST ; LITTER DECOMPOSITION ; ECONOMICS SPECTRUM ; FUNCTIONAL TRAITS ; TEMPERATE FOREST ; LEAF-LITTER ; CARBON
Indexed BySCI
Language英语
Funding ProjectKey Research Program of Frontier Sciences, CAS[QYZDB-SSW-DQC002] ; National Key Technologies R&D Program of China[2015BAD07B0505]
Funding OrganizationKey Research Program of Frontier Sciences, CAS ; National Key Technologies R&D Program of China
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEcology
WOS IDWOS:000429006200004
PublisherWILEY
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/57245
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLin, Guigang
Affiliation1.Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, CN-110016 Shenyang, Liaoning, Peoples R China
2.Chinese Acad Sci, Inst Appl Ecol, Daqinggou Ecol Stn, Shenyang, Liaoning, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Ctr Forest Ecosyst Studies, Beijing, Peoples R China
4.Chinese Acad Sci, Qianyanzhou Ecol Stn, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Lin, Guigang,Guo, Dali,Li, Liang,et al. Contrasting effects of ectomycorrhizal and arbuscular mycorrhizal tropical tree species on soil nitrogen cycling: the potential mechanisms and corresponding adaptive strategies[J]. OIKOS,2018,127(4):518-530.
APA Lin, Guigang,Guo, Dali,Li, Liang,Ma, Chengen,&Zeng, De-Hui.(2018).Contrasting effects of ectomycorrhizal and arbuscular mycorrhizal tropical tree species on soil nitrogen cycling: the potential mechanisms and corresponding adaptive strategies.OIKOS,127(4),518-530.
MLA Lin, Guigang,et al."Contrasting effects of ectomycorrhizal and arbuscular mycorrhizal tropical tree species on soil nitrogen cycling: the potential mechanisms and corresponding adaptive strategies".OIKOS 127.4(2018):518-530.
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