globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.foreco.2017.05.047
Scopus记录号: 2-s2.0-85020671565
论文题名:
Replacing trees by bamboos: Changes from canopy to soil organic carbon storage
作者: Zaninovich S.C.; Montti L.F.; Alvarez M.F.; Gatti M.G.
刊名: Forest Ecology and Management
ISSN:  0378-1127
出版年: 2017
卷: 400
起始页码: 208
结束页码: 217
语种: 英语
英文关键词: Atlantic Forest ; Decomposition ; Degradation ; Ecosystem processes ; Litterfall ; Necromass
Scopus关键词: Bamboo ; Budget control ; Decay (organic) ; Decomposition ; Degradation ; Ecology ; Ecosystems ; Organic carbon ; Soils ; Vegetation ; Atlantic forest ; Degradation process ; Ecosystem process ; Litterfalls ; Necromass ; Soil organic carbon ; Soil organic carbon content ; Soil organic carbon storages ; Forestry ; bamboo ; canopy exchange ; deciduous forest ; environmental degradation ; environmental disturbance ; hypothesis testing ; litterfall ; logging (timber) ; organic carbon ; soil carbon ; topsoil ; Decay ; Degradation ; Ecosystems ; Atlantic Forest ; Bambusa
英文摘要: Disturbances such as selective logging in a forest may lead to a degradation process, where new species become dominant and replace the original vegetation. This is the case of the Semi-deciduous Atlantic Forest, where bamboos replace trees and palms, affecting the forest structure and dynamics. As bamboos show plant traits that contrast those of trees and palms, we hypothesize that forest degradation affects ecosystem properties, generating changes in litterfall and litter decay rates, which transfer from plants to soil. We tested this hypothesis in twelve 0.36 ha plots along a forest degradation gradient in the subtropical forest of Northeastern Argentina. Total litterfall did not change along forest degradation, but litter layer necromass decreased more than 60% and litter thickness doubled in highly degraded sites. Litter layer thickness was associated with bamboo necromass present in the litterfall. Forest degradation also caused a deceleration in decomposition of the two most contrasting litter types under study, while the soil organic carbon content in the top 5 cm suffered a 50% decrease, from 21.5 to 10.9 Mg ha−1. Forest degradation has a cascade effect on carbon storage and on its cycling from vegetation to soil by means of changes in different ecosystem processes mediated by plants. In the end, these changes affect soil organic carbon. This study provides a better understanding on the mechanisms behind carbon losses in relation to forest degradation, one of the greatest uncertainties in the carbon budget. © 2017 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64244
Appears in Collections:影响、适应和脆弱性

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作者单位: Instituto de Biología Subtropical, Universidad Nacional de Misiones – CONICET, Bertoni 85, Puerto Iguazú, Misiones, Argentina; Instituto de Investigaciones Marinas y Costeras-CONICET, Instituto de Geología de Costas y del Cuaternario-CIC, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Deán Funes, Buenos Aires, Argentina; Facultad de Ciencias Forestales, Universidad Nacional de Misiones, Bertoni 124, Eldorado, Misiones, Argentina

Recommended Citation:
Zaninovich S.C.,Montti L.F.,Alvarez M.F.,et al. Replacing trees by bamboos: Changes from canopy to soil organic carbon storage[J]. Forest Ecology and Management,2017-01-01,400
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