DOI: 10.1016/j.foreco.2014.01.005
Scopus记录号: 2-s2.0-84893545734
论文题名: Large trees as key elements of carbon storage and dynamics after selective logging in the Eastern Amazon
作者: Sist P. ; Mazzei L. ; Blanc L. ; Rutishauser E.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 318 起始页码: 103
结束页码: 109
语种: 英语
英文关键词: Amazonian rainforest management
; Biomass dynamics
; Improved forest management
; REDD+
; Reduced-impact logging
; Tropical silviculture
英文摘要: The long term effect of Reduced-Impact Logging (RIL) on above-ground live biomass (AGB) dynamics was investigated in 18 1-ha logged over permanent sample plots set up in a terra firme rain forest in the Eastern Amazon (Brazil, Paragominas). Both tree survival and growth were investigated among three Diameter at Breath Height (DBH) classes (20-40, 40-60, ≥60cm) to assess the contribution of each DBH class to the post-logging AGB recovery. Before logging, mean tree density and AGB per plot (dbh≥20cm) were 187±14 trees ha-1 and 377.6±62.8Mgha-1 respectively. Although big trees (dbh≥60cm) only represented 9.3% of the total tree density, they gathered almost half of total AGB. During the post-logging period (8years), the mortality of large trees was found to drive the annual net changes and largely overcame the AGB gain in the smaller DBH classes. Indeed, plots with high post-logging mortality of large trees showed negative carbon balance t over the study period (8years). The over mortality of large trees injured by logging contributed significantly to the annual AGB losses (up to 40%) in the first years after logging. Due to the overwhelming importance of this size class in carbon stocks and dynamic, reducing logging damages and intensity might have great impact in the post-logging biomass dynamics. We estimated that reducing logging intensity from 6 to 3 stems ha-1 would save 27.7Mg C ha-1 for a 35years rotation cycle. To compensate this loss of profits, compensatory payments of avoided CO2 emission should worth US $ 6.5/Mg of CO2. This price falls into the range of prices of the international carbon market. Sustainable forest management aiming at enhancing carbon stocks could therefore promote the preservation of the large trees. At our study site, we recommend the adoption of a maximum diameter cutting limit of 110cm. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66063
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: CIRAD - ES, UR 105 TA/10C, 34398 Montpellier Cedex 5, France; Embrapa AmazÔnia Oriental, Travessa Enéas Pinheiro, S/N, CEP 66095 100 Belém, Pará, Brazil; CarboForExpert, Carboforexpert.ch, 1248 Hermance, Switzerland
Recommended Citation:
Sist P.,Mazzei L.,Blanc L.,et al. Large trees as key elements of carbon storage and dynamics after selective logging in the Eastern Amazon[J]. Forest Ecology and Management,2014-01-01,318