globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.foreco.2015.09.035
Scopus记录号: 2-s2.0-84943605697
论文题名:
Eucalyptus plantation effects on soil carbon after 20years and three rotations in Brazil
作者: Cook R.L.; Binkley D.; Stape J.L.
刊名: Forest Ecology and Management
ISSN:  0378-1127
出版年: 2016
卷: 359
起始页码: 92
结束页码: 98
语种: 英语
英文关键词: Brazil ; Eucalyptus ; Plantation ; Soil carbon
Scopus关键词: Forestry ; Land use ; Rotation ; Tropics ; Brazil ; Eucalyptus ; Eucalyptus plantations ; Intensively managed forests ; Mean annual temperatures ; Plantation ; Soil carbon ; Spatial heterogeneity ; Soils ; Eucalyptus
英文摘要: How will shifting land use from row crops and pasture to intensively managed forests alter soil carbon storage? Demand and profitability has led to a dramatic increase in Eucalyptus production with a total planted area over 20million hectares worldwide. The impacts of these short-rotation (6- to 8-year harvest cycle) Eucalyptus plantations on soil carbon appear to be variable, and the available case studies are typically too short term to support generalization. Spatial heterogeneity of soils across landscapes requires repeated sampling for reliable documentation of soil carbon changes over multiple rotations. We characterized soil carbon stocks and change over two decades in 306 operational Eucalyptus plantations across a 1200-km gradient. Across all sites, soil C (0-30cm depth) in 2010 averaged 29Mgha-1 (±0.70Mgha-1), tending to increase with increasing soil clay content, precipitation, and mean annual temperature. Average soil C from the original sampling to 2010 (ranging from 18 to 26years or approximately 3 to 4 rotations) showed a slight decrease (-0.22±0.05Mgha-1yr-1, P<0.0001). Tropical sites in Region 1 (Bahia state) showed no net change (-0.11Mgha-1yr-1, P=0.1874, whereas tropical and subtropical sites in Region 2 (Espirito Santo state) lost soil carbon stocks (-0.87Mgha-1yr-1, P<0.0001), and subtropical sites in Region 3 (São Paulo state) also remained the same (0.06Mgha-1yr-1, P=0.3969). Soil carbon change tended to increase with precipitation during the dry season, and had weaker associations with soil order and mean annual temperature. © 2015 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/65201
Appears in Collections:影响、适应和脆弱性

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作者单位: Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, United States; Department of Ecosystem Science and Sustainability, Colorado State University, Fort Collins, CO, United States; Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, Sweden; Forest Technology, Suzano Pulp and Paper, Mucuri, Bahia, Brazil; United States and Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, Sweden; Suzano Papel e Celulose Brasil, Avenida Brigadeiro Faria Lima, 1355 Jardim Paulista, São Paulo, Brazil

Recommended Citation:
Cook R.L.,Binkley D.,Stape J.L.. Eucalyptus plantation effects on soil carbon after 20years and three rotations in Brazil[J]. Forest Ecology and Management,2016-01-01,359
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