DOI: 10.1016/j.foreco.2013.04.021
Scopus记录号: 2-s2.0-84877795420
论文题名: Long-term intensive management effects on soil organic carbon pools and chemical composition in Moso bamboo (Phyllostachys pubescens) forests in subtropical China
作者: Li Y. ; Zhang J. ; Chang S.X. ; Jiang P. ; Zhou G. ; Fu S. ; Yan E. ; Wu J. ; Lin L.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 303 起始页码: 121
结束页码: 130
语种: 英语
英文关键词: 13C CPMAS NMR
; Carbon storage
; Fertilization
; Labile organic carbon
; Moso bamboo forest
; Tillage
Scopus关键词: Carbon storage
; CPMASNMR
; Fertilization
; Moso bamboo
; Tillage
; Agricultural machinery
; Bamboo
; Forestry
; Lakes
; Management
; Nuclear magnetic resonance spectroscopy
; Population statistics
; Soils
; Storage management
; bamboo
; chemical composition
; forest ecosystem
; forest management
; microbial community
; population size
; soil management
; soil organic matter
; soil quality
; subtropical region
; China
英文摘要: Intensive forest management practices, such as fertilization, tillage, and understory removal, could markedly change the soil organic carbon (SOC) stock and labile organic carbon (C) pools. However, the combined effects of such intensive management practices on the quantity and quality of soil SOC in bamboo forests are poorly understood. The objectives of this study were to investigate the impact of long-term intensive management practices, including inorganic fertilizer application, tillage, and understory removal, on total and labile SOC pools and chemical composition of SOC in Moso bamboo (Phyllostachys pubescens) forests and to explore relationships between different soil organic C forms. We used a chronosequence approach (consisting of Moso bamboo forests with 0, 5, 10, 20, 30. years of intensive management) to examine the effects of long-term intensive management on SOC storage, water soluble organic C (WSOC), hot-water soluble organic C (HWSOC), microbial biomass C (MBC), readily oxidizable C (ROC), and SOC chemistry. Our results showed that SOC stock and concentrations of WSOC, HWSOC, MBC, and ROC decreased with increasing duration under intensive management. For the chemical composition of SOC, the contents of alkyl C and carbonyl C and the alkyl C to O-alkyl C (A/O-A) ratio increased, while the contents of O-alkyl C and aromatic C and aromaticity decreased as duration under intensive management increased, suggesting that long-term intensive management changed the SOC chemical composition. Soil MBC was negatively correlated with both alkyl C content and the A/O-A ratio (P< 0.01 for both), and was positively correlated with O-alkyl content (P< 0.01), indicating that soil microbial population size may be partly dependent on the chemical composition of SOC. In addition, O-alkyl C content was correlated with concentrations of WSOC (P< 0.05), HWSOC (P< 0.01), and ROC (P< 0.01), which implied that O-alkyl C might be the main C component of WSOC, HWSOC, and ROC. We conclude that long-term intensive management reduced the total and labile SOC stocks in bamboo forests and alternative management regimes should be developed to increase C sequestration of soils in intensively managed Moso bamboo forests in subtropical China. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66531
Appears in Collections: 影响、适应和脆弱性
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作者单位: Zhejiang Provincial Key Lab. of Carbon Cycling in Forest Ecosystems and Carbon Sequestration, Zhejiang A and F University, Lin'an 311300, China; Department of Renewable Resources, University of Alberta, 442 Earth Sciences Building, Edmonton, AB T6G 2E3, Canada; Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, China; Department of Environment Science, East China Normal University, Shanghai 200062, China
Recommended Citation:
Li Y.,Zhang J.,Chang S.X.,et al. Long-term intensive management effects on soil organic carbon pools and chemical composition in Moso bamboo (Phyllostachys pubescens) forests in subtropical China[J]. Forest Ecology and Management,2013-01-01,303