DOI: 10.1016/j.foreco.2017.05.050
Scopus记录号: 2-s2.0-85020314415
论文题名: Afforestation effects on soil organic carbon and nitrogen pools modulated by lithology
作者: Li D. ; Wen L. ; Zhang W. ; Yang L. ; Xiao K. ; Chen H. ; Wang K.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 400 起始页码: 85
结束页码: 92
语种: 英语
英文关键词: Bedrock
; Carbon sequestration
; Cropland conversion
; Nitrogen accumulation
; Plantation forest
Scopus关键词: Forestry
; Global warming
; Lakes
; Limestone
; Lithology
; Nitrogen
; Organic carbon
; Reforestation
; Bedrock
; Carbon sequestration
; Nitrogen accumulation
; Plantation forests
; Soil organic carbon
; Soil organic carbon and nitrogen
; Southwest China
; Total phosphorus
; Soils
; afforestation
; agricultural land
; bedrock
; carbon sequestration
; lithology
; nitrogen
; phosphorus
; plantation forestry
; soil organic matter
; China
英文摘要: Afforestation is regarded as an effective way to sequester soil organic carbon (C) and hence to attenuate global warming. Nevertheless, so far mechanisms underlying the direction and magnitude of soil C pool variation following afforestation are not well understood. Here soil organic C, total nitrogen (N) and total phosphorus (P) pools in surface mineral soil (0–15 cm) were measured in cropland and plantation forest over two lithology types, i.e., limestone and clasolite, using a paired-site approach in a region of southwest China. The major objective was to test whether the effects of afforestation on soil C, N and P pools were affected by lithology. We found that lithology modulated the effect of afforestation on soil C or N pool, but not on soil P pool. Soil C pool was not altered by afforestation over limestone, but was significantly increased over clasolite (P < 0.001). Instead, soil N pool was significantly decreased by afforestation over limestone (P < 0.001), but was not altered over clasolite. Soil P pool was consistently decreased by afforestation regardless of lithology type (P < 0.05). The molar ratios among soil C, N and P were not affected by lithology, but were significantly elevated by afforestation (P < 0.01), indicating that soil C sequestration would increasingly be limited by soil N or P following afforestation. Our study suggests that afforestation effects on soil C and N pools may be controlled by lithology, and thus provides a new mechanism to explain the divergent responses of soil C and N following afforestation. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64230
Appears in Collections: 影响、适应和脆弱性
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作者单位: Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, China; Huanjiang Observation and Research Station for Karst Ecosystems, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Huangjiang, Guangxi, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Li D.,Wen L.,Zhang W.,et al. Afforestation effects on soil organic carbon and nitrogen pools modulated by lithology[J]. Forest Ecology and Management,2017-01-01,400