Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.07.019 |
Degradation impacts on riparian forests of the lower Mearim river, eastern periphery of Amazonia | |
da Silva, Roberto Lima1; Leite, Marcio Fernandes A.1; Muniz, Francisca Helena1; Gomes de Souza, Luis Augusto2; Reis de Moraes, Flavio Henrique3; Gehring, Christoph1 | |
2017-10-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2017 |
卷号 | 402 |
文章类型 | Article |
语种 | 英语 |
国家 | Brazil |
英文摘要 | We describe degradation impacts on biomass, structural and functional composition of riparian forests of the Mearim river, eastern periphery of Amazonia, based on 40 transects from open water to terra firme and covering 4 degradation levels. Biomass was high (306.3 Mg ha(-1)) in original mature forests (MF), and 92.3% lower in strongly degraded (SD) sites. This suggests disproportionally high CO2-emissions via riparian forest degradation and calls for their preferential conservation and restoration to contain global warming. Degradation affected vegetation structure, especially plant size distribution, whereas overall plant abundance did not differ between degradation levels. 'Aninga' (Montrichardia arborescens and M. linifera) forms a conspicuous vegetation component in the aquatic zone, with 12.6% biomass and 58.4% abundance shares, relatively constant up to mid-level degradation but significantly lower in SD. Aninga's forefront position breaks the kinetic energy of waves and currents, making it ideal for erosion-control, we establish allometric equations for aninga biomass estimation. Erosion caused land loss in the aquatic and semiaquatic sections of degraded sites. The biomass share of potentially N2 fixing Fabaceae was significantly higher in both aquatic (41.4%) and semiaquatic (44.8%) zones than in terra firme (6.3%). High denitrification N-losses in alternately aerobe-anaerobe zones could reduce N availability and give N-2-fixing legumes a competitive edge; we therefore recommend N-2-fixing legumes for riparian forest restoration. We find low to moderate changes of vegetation indicators up to mid-level degradation, as opposed to systematically differing SD, pointing to a critical degradation threshold beyond which dysfunctionality impedes riparian ecosystem functioning. (C) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | Biological nitrogen fixation Carbon stocks Fabaceae Structural composition Montrichardia Riverine forest |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000411534000009 |
WOS关键词 | TROPICAL RAIN-FORESTS ; ABOVEGROUND BIOMASS ; BRAZILIAN AMAZON ; WATER-QUALITY ; NITROGEN-FIXATION ; LANDSCAPE-SCALE ; GALLERY FORESTS ; CLIMATE-CHANGE ; CARBON STOCKS ; LIVE BIOMASS |
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/23616 |
专题 | 气候变化 |
作者单位 | 1.Maranhao State Univ UEMA, Postgrad Course Agroecol, Cidade Univ Paulo 6 S-N, BR-65025970 Sao Luis, MA, Brazil; 2.Natl Amazonia Res Inst INPA, Agron Inst, Av Andre Araujo,2936 Petropolis, BR-69083000 Manaus, Amazonas, Brazil; 3.CEUMA Univ, Dept Environm Engn, Rua Josue Montello 01,Renascenca 2 S-N, Sao Luis, MA, Brazil |
推荐引用方式 GB/T 7714 | da Silva, Roberto Lima,Leite, Marcio Fernandes A.,Muniz, Francisca Helena,et al. Degradation impacts on riparian forests of the lower Mearim river, eastern periphery of Amazonia[J]. FOREST ECOLOGY AND MANAGEMENT,2017,402. |
APA | da Silva, Roberto Lima,Leite, Marcio Fernandes A.,Muniz, Francisca Helena,Gomes de Souza, Luis Augusto,Reis de Moraes, Flavio Henrique,&Gehring, Christoph.(2017).Degradation impacts on riparian forests of the lower Mearim river, eastern periphery of Amazonia.FOREST ECOLOGY AND MANAGEMENT,402. |
MLA | da Silva, Roberto Lima,et al."Degradation impacts on riparian forests of the lower Mearim river, eastern periphery of Amazonia".FOREST ECOLOGY AND MANAGEMENT 402(2017). |
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