globalchange  > 气候变化与战略
DOI: 10.1007/s00248-019-01414-7
论文题名:
Tropical Rainforest Restoration Plantations Are Slow to Restore the Soil Biological and Organic Carbon Characteristics of Old Growth Rainforest
作者: Bonner M.T.L.; Allen D.E.; Brackin R.; Smith T.E.; Lewis T.; Shoo L.P.; Schmidt S.
刊名: Microbial Ecology
ISSN: 953628
出版年: 2020
卷: 79, 期:2
语种: 英语
英文关键词: Land use change ; Microbial ecology ; Microbial function and composition ; Mixed-species plantations ; Soil carbon sequestration ; Soil fungi and bacteria
英文摘要: Widespread and continuing losses of tropical old-growth forests imperil global biodiversity and alter global carbon (C) cycling. Soil organic carbon (SOC) typically declines with land use change from old-growth forest, but the underlying mechanisms are poorly understood. Ecological restoration plantations offer an established means of restoring aboveground biomass, structure and diversity of forests, but their capacity to recover the soil microbial community and SOC is unknown due to limited empirical data and consensus on the mechanisms of SOC formation. Here, we examine soil microbial community response and SOC in tropical rainforest restoration plantings, comparing them with the original old-growth forest and the previous land use (pasture). Two decades post-reforestation, we found a statistically significant but small increase in SOC in the fast-turnover particulate C fraction. Although the δ13C signature of the more stable humic organic C (HOC) fraction indicated a significant compositional turnover in reforested soils, from C4 pasture-derived C to C3 forest-derived C, this did not translate to HOC gains compared with the pasture baseline. Matched old-growth rainforest soils had significantly higher concentrations of HOC than pasture and reforested soils, and soil microbial enzyme efficiency and the ratio of gram-positive to gram-negative bacteria followed the same pattern. Restoration plantings had unique soil microbial composition and function, distinct from baseline pasture but not converging on target old growth rainforest within the examined timeframe. Our results suggest that tropical reforestation efforts could benefit from management interventions beyond re-establishing tree cover to realize the ambition of early recovery of soil microbial communities and stable SOC. © 2019, The Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159733
Appears in Collections:气候变化与战略

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作者单位: School of Agriculture and Food Science, University of Queensland, Brisbane, QLD 4072, Australia; Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, 90736, Sweden; Department of Environment and Science, Brisbane, QLD 4001, Australia; Department of Agriculture and Fisheries, Queensland Government, University of the Sunshine Coast, Sippy Downs, 4556, Australia; Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sippy Downs, 4556, Australia; School of Biological Sciences, University of Queensland, Brisbane, QLD 4072, Australia

Recommended Citation:
Bonner M.T.L.,Allen D.E.,Brackin R.,et al. Tropical Rainforest Restoration Plantations Are Slow to Restore the Soil Biological and Organic Carbon Characteristics of Old Growth Rainforest[J]. Microbial Ecology,2020-01-01,79(2)
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