DOI: 10.1016/j.foreco.2012.07.045
Scopus记录号: 2-s2.0-84878113991
论文题名: The manipulation of organic residues affects tree growth and heterotrophic CO2 efflux in a tropical Eucalyptus plantation
作者: Versini A. ; Nouvellon Y. ; Laclau J.-P. ; Kinana A. ; Mareschal L. ; Zeller B. ; Ranger J. ; Epron D.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 301 起始页码: 79
结束页码: 88
语种: 英语
英文关键词: Eucalyptus growth
; Harvest organic residue
; Soil organic matter mineralization
; Soil respiration
; Tropical forest plantation
Scopus关键词: Dissolved organic carbon
; Eucalyptus plantations
; Long-term sustainability
; Organic residues
; Soil organic matter mineralizations
; Soil organic matters
; Soil respiration
; Tropical forest
; Biogeochemistry
; Biological materials
; Decay (organic)
; Experiments
; Forestry
; Harvesting
; Mineralogy
; Organic compounds
; Soils
; Tropics
; Carbon dioxide
; carbon dioxide
; carbon flux
; decomposition
; dissolved organic carbon
; evergreen tree
; growth rate
; harvesting
; mineralization
; nutrient cycling
; respiration
; soil emission
; soil organic matter
; sustainability
; temperature effect
; topsoil
; tree planting
; tropical soil
; Biochemistry
; Carbon Dioxide
; Eucalyptus
; Forestry
; Geochemistry
; Harvesting
; Organic Compounds
; Plantations
; Respiration
; Soil
; Tropical Atmospheres
; Eucalyptus
英文摘要: Fast-growing plantations are increasingly being established on tropical soils, where fertility is largely supported by soil organic matter (SOM) and where different management options of harvest organic residues is thought to impact the long-term sustainability of these plantations. The objectives of this study were: (1) to quantify the effect of contrasting methods of organic residue management on tree growth and soil CO2 effluxes in the first 2years after planting and (2) to evaluate the impact of organic residue manipulations on the mineralization of soil organic matter over the length of the experiment. Three treatments were setup in 0.125ha plots and replicated in three blocks at the harvesting of a Congolese Eucalyptus stand, resulting in an aboveground organic residue mass ranging from 0 to 6.3kgm-2. The mineralization of SOM was deduced in each treatment by partitioning sources of soil CO2 effluxes using decomposition experiments and by upscaling specific root respiration. Soil CO2 effluxes were greatly affected by seasons and organic residue manipulation, although there were no significant changes in topsoil water content and topsoil temperature over most of the study period. Aboveground organic residue was the first contributor to soil CO2 efflux in the two treatments with a litter layer. Organic residue management did not significantly influence the mineralization of SOM in our study, probably due to the low quality of Eucalyptus litter, or to the hypothetical lack of dissolved organic carbon transfers from litter to soil. A strong relationship was found between cumulative heterotrophic CO2 efflux and tree growth, supporting the hypothesis that the early growth of Eucalyptus trees in a sandy tropical soil is largely dependent on the nutrients released by the decomposition of organic residues. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66590
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: CIRAD, UMR111, Ecologie Fonctionnelle and Biogéochimie des Sols and Agro-écosystèmes, F34060 Montpellier, France; Centre de Recherche sur la Durabilité et la Productivité des Plantations Industrielles, BP 1291 Pointe Noire, Congo; INRA, UR1138, Biogéochimie des Ecosystèmes forestiers, Champenoux, France; Universidade de São Paulo, Departmento de Ciências Atmosféricas, 05508-090 São Paulo, Brazil; Universidade de São Paulo, Departamento de Ecologia, 05508-900 São Paulo, Brazil; Université de Lorraine, UMR1137, Ecologie et Ecophysiologie Forestières, Faculté des Sciences, F-54500 Vandoeuvre-les-Nancy, France; INRA, UMR1137, Ecologie et Ecophysiologie Forestières, Centre de Nancy, F-54280 Champenoux, France
Recommended Citation:
Versini A.,Nouvellon Y.,Laclau J.-P.,et al. The manipulation of organic residues affects tree growth and heterotrophic CO2 efflux in a tropical Eucalyptus plantation[J]. Forest Ecology and Management,2013-01-01,301