Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2018.12.055 |
Nitrogen cycling in monospecific and mixed-species plantations of Acacia mangium and Eucalyptus at 4 sites in Brazil | |
Voigtlaender, M.1; Brandani, C. B.1; Caldeira, D. R. M.2; Tardy, F.1,3; Bouillet, J. -P.1,3,4; Goncalves, J. L. M.1; Moreira, M. Z.5; Leite, F. P.6; Brunet, D.4; Paula, R. R.1,7; Laclau, J. -P.2,3,4 | |
2019-03-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2019 |
卷号 | 436页码:56-67 |
文章类型 | Article |
语种 | 英语 |
国家 | Brazil; France |
英文摘要 | Mixing N-fixing trees with eucalypts is an attractive option to improve the long-term soil N status in fast-growing plantations established in tropical soils. A randomized block design was replicated at four sites in Brazil to compare the biogeochemical cycles in mono-specific stands of Eucalyptus (100E) and Acacia mangium (100A) with mixed species plantations in a proportion of 1:1 (50A50E). Our study aimed to assess the effects of introducing A. rnangium trees in Eucalyptus plantations on atmospheric N-2 fixation, N cycling and soil organic matter stocks. Litterfall and soil N mineralization were measured over the last two years of the rotation (4-6 years after planting). Aboveground N accumulation in the trees and C and N stocks in the forest floor and in the top soil were intensively sampled at harvesting age. N-2 fixation rates were estimated using the natural abundance of N-15 as well as by the difference between total N stocks in 100A and 50A50E relative to 100E (accretion method). While the N-15 natural abundance method was unsuitable, the accretion method showed consistently across the four sites that atmospheric N fixation reached about 250 and 400 kg N ha(-1) rotation(-1) in 50A50E and 100A, respectively. Except at one site with high mortality, N contents within trees at harvesting were approximately 40% higher in 100A than in 100E. Mean N contents in litterfall and N mineralization rates were about 60% higher in 100A than in 100E, with intermediate values in 50A50E. The amounts of N in litterfall were much more dependent on soil N mineralization rates for acacia trees than for eucalypt trees. Soil C and N stocks were dependent on soil texture but not influenced by tree species. N budgets over a 6-year rotation were enhanced by about 65 kg N ha(-1) yr(-1) in 100A and 40 kg N ha(-1) yr(-1) in 50A50E relative to monospecific eucalypt plantations. Introducing N-fixing trees in eucalypt plantations might therefore contribute to reducing the need for mineral N fertilization in the long-term. |
英文关键词 | Organic matter N-2 fixation Eucalypt Litterfall Nutrition Tree mixtures Tropical plantations |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000460075000007 |
WOS关键词 | N-15 NATURAL-ABUNDANCE ; TREE GROWTH ; CARBON SEQUESTRATION ; ABOVEGROUND BIOMASS ; SOIL FERTILITY ; FIXING TREES ; STAND-LEVEL ; FINE-ROOTS ; GRANDIS ; DYNAMICS |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/22149 |
专题 | 气候变化 |
作者单位 | 1.Univ Sao Paulo, Dept Forest Sci, ESALQ, BR-13418900 Piracicaba, Brazil; 2.Univ Estadual Paulista, Dept Solos & Recursos Ambientais, UNESP, BR-18610300 Botucatu, SP, Brazil; 3.CIRAD, UMR Eco & Sols, F-34398 Montpellier, France; 4.Univ Montpellier, INRA, CIRAD, Eco & Sols,IRD,Montpellier SupAgro, Montpellier, France; 5.Univ Sao Paulo, CENA, Av Centenario 303, BR-13416903 Piracicaba, Brazil; 6.Coordenacao Pesqulsa Florestal, CENIBRA, BR-35196972 Belo Oriente, MG, Brazil; 7.UFES, Dept Forest Sci & Wood, BR-29550000 Jeronimo Monteiro, Brazil |
推荐引用方式 GB/T 7714 | Voigtlaender, M.,Brandani, C. B.,Caldeira, D. R. M.,et al. Nitrogen cycling in monospecific and mixed-species plantations of Acacia mangium and Eucalyptus at 4 sites in Brazil[J]. FOREST ECOLOGY AND MANAGEMENT,2019,436:56-67. |
APA | Voigtlaender, M..,Brandani, C. B..,Caldeira, D. R. M..,Tardy, F..,Bouillet, J. -P..,...&Laclau, J. -P..(2019).Nitrogen cycling in monospecific and mixed-species plantations of Acacia mangium and Eucalyptus at 4 sites in Brazil.FOREST ECOLOGY AND MANAGEMENT,436,56-67. |
MLA | Voigtlaender, M.,et al."Nitrogen cycling in monospecific and mixed-species plantations of Acacia mangium and Eucalyptus at 4 sites in Brazil".FOREST ECOLOGY AND MANAGEMENT 436(2019):56-67. |
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