气候变化领域集成服务门户(CCPortal): Multiple drivers of aboveground biomass in a human-modified landscape of the Caatinga dry forest

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DOI	10.1016/j.foreco.2018.12.042
	Multiple drivers of aboveground biomass in a human-modified landscape of the Caatinga dry forest
	Souza D.G.; Sfair J.C.; de Paula A.S.; Barros M.F.; Rito K.F.; Tabarelli M.
发表日期	2019
ISSN	0378-1127
起始页码	57
结束页码	65
卷号	435
英文摘要	Aboveground biomass is an important predictor of net primary productivity and provision of ecosystem services such as carbon storage and food supply. However, biomass can be a complex and multi-driven ecosystem feature, particularly in tropical forests experiencing human disturbances. Here we examine the potential effects of forest successional stage, species richness, plant assemblage functional composition, rainfall, grazing and soil fertility as drivers of biomass in a human-modified landscape of the Caatinga dry forest. We recorded 8911 stems (DSH ≥ 3) across 35 0.-ha plots and calculated the aboveground biomass adopting allometric model developed specifically for Caatinga dry forest. Caatinga flora was dominated by species bearing moderate to heavy wood, with aboveground biomass concentrated into a few dominating species and narrow stems. Biomass averaged 28.48 ± 23.32 Mg ha −1 with a high cross-stand variation as it resulted from a complex interaction of age of forest stand, rainfall and species richness; i.e. old-growth forest stands supported twice as much biomass (38.81 ± 25.08 Mg ha −1 ) than successional stands (14.68 ± 10.52 Mg ha −1 ). Drivers of plot-level biomass also affected biomass at species level as well as the abundance of the species which contributed most for forest biomass. Our results confirm that slash-and-burn agriculture supports the emergence of biomass mosaics associated to the presence of old-growth and successional forest stands of varying age. In this context, Caattinga supports reduced forest biomass, which responds to both natural and human–driven forces and their complex interactions. Moreover, biomass persistence in human-modified landscapes requires not only long fallow periods, but also the protection of species-rich forest assemblages. © 2018 Elsevier B.V.
英文关键词	Caatinga; Forest biomass; Human disturbance; Rainfall; Seasonally dry tropical forests
语种	英语
scopus关键词	Biomass; Cultivation; Ecosystems; Food storage; Food supply; Magnesium; Plants (botany); Rain; Caatinga; Forest biomass; Forest successional stages; Functional compositions; Human disturbances; Net primary productivity; Seasonally dry tropical forests; Slash-and-burn agriculture; Forestry; aboveground biomass; allometry; anthropogenic effect; caatinga; disturbance; dry forest; environmental factor; landscape change; rainfall; Biomass; Cultivation; Ecosystems; Food Storage; Magnesium; Rain
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156197
作者单位	Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, João Pessoa, Paraíba 58051900, Brazil; Department of Botany, School of Sciences, University of South Bohemia, Česke Budějovice, Czech Republic; Departamento de Botânica, Universidade Federal de Pernambuco, Recife, Pernambuco 50670-901, Brazil; Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Morelia, Michoacán 58190, Mexico
推荐引用方式 GB/T 7714	Souza D.G.,Sfair J.C.,de Paula A.S.,et al. Multiple drivers of aboveground biomass in a human-modified landscape of the Caatinga dry forest[J],2019,435.
APA	Souza D.G.,Sfair J.C.,de Paula A.S.,Barros M.F.,Rito K.F.,&Tabarelli M..(2019).Multiple drivers of aboveground biomass in a human-modified landscape of the Caatinga dry forest.Forest Ecology and Management,435.
MLA	Souza D.G.,et al."Multiple drivers of aboveground biomass in a human-modified landscape of the Caatinga dry forest".Forest Ecology and Management 435(2019).