DOI: 10.1016/j.gloplacha.2012.09.006
论文题名: Terrestrial carbon balance in tropical Asia: Contribution from cropland expansion and land management
作者: Tao B. ; Tian H. ; Chen G. ; Ren W. ; Lu C. ; Alley K.D. ; Xu X. ; Liu M. ; Pan S. ; Virji H.
刊名: Global and Planetary Change
ISSN: 0921-8343
出版年: 2013
卷: 100 起始页码: 85
结束页码: 98
语种: 英语
英文关键词: Carbon storage
; Cropland expansion
; Land management
; Tropical Asia
; Tropical deforestation
Scopus关键词: Agricultural intensification
; Carbon balance
; Carbon emissions
; Carbon fluxes
; Carbon storage
; Ecosystem model
; Food demand
; Forest biomass
; Land areas
; Land management practices
; Land managements
; Management practices
; Mitigation options
; Natural forests
; Process-based ecosystem model
; Soil carbon
; Soil organic matters
; South Asia
; Southeast Asia
; Temporal pattern
; Terrestrial carbon cycle
; Tropical Asia
; Tropical deforestation
; Carbon
; Climate change
; Deforestation
; Irrigation
; Lakes
; Land use
; Nitrogen fertilizers
; Tropics
; Vegetation
; Expansion
; agricultural development
; agricultural intensification
; agricultural land
; carbon balance
; carbon emission
; carbon flux
; carbon sequestration
; deforestation
; ecosystem modeling
; fertilizer application
; food supply
; irrigation
; land management
; management practice
; soil organic matter
; tropical region
; South Asia
; Southeast Asia
英文摘要: Tropical Asia has experienced dramatic cropland expansion and agricultural intensification to meet the increasing food demand and is likely to undergo further rapid development in the near future. Much concern has been raised about how cropland expansion and associated management practices (nitrogen fertilizer use, irrigation, etc.) have affected the terrestrial carbon cycle in this region. In this study, we used a process-based ecosystem model, the Dynamic Land Ecosystem Model (DLEM), to assess the magnitude, spatial and temporal patterns of terrestrial carbon fluxes and pools in Tropical Asia as resulted from cropland expansion and land management practices during 1901-2005. The results indicated that cropland expansion had resulted in a release of 19.12 ± 3.06. Pg. C (0.18 ± 0.029. Pg. C/yr) into the atmosphere in Tropical Asia over the study period. Of this amount, approximately 22% (4.18 ± 0.66. Pg. C) was released from South Asia and 78% (14.94 ± 2.40. Pg. C) from Southeast Asia. Larger land area was converted to cropland while less carbon was emitted from South Asia than from Southeast Asia, where forest biomass and soil carbon were significantly higher. Changes in vegetation, soil organic matter, and litter pools caused emissions of 15.58, 2.25, and 1.71. Pg. C, respectively, from the entire region. Significant decreases in vegetation carbon occurred across most regions of Southeast Asia due to continuous cropland expansion and shrink of natural forests. When considering land management practices, however, less carbon was released into the atmosphere, especially in South Asia where land management practices contributed to an approximately 10% reduction in carbon emission. This implies that optimizing land management practices could greatly reduce the carbon emissions caused by cropland expansion and might be one of important climate mitigation options in Tropical Asia. © 2012 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84868488477&doi=10.1016%2fj.gloplacha.2012.09.006&partnerID=40&md5=78d14bf4623396b273cf99ee3639f8bf
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11249
Appears in Collections: 全球变化的国际研究计划
There are no files associated with this item.
作者单位: International Center for Climate and Global Change Research, School of Forestry and Wildlife Sciences, Auburn University, Auburn, AL 36849, United States
Recommended Citation:
Tao B.,Tian H.,Chen G.,et al. Terrestrial carbon balance in tropical Asia: Contribution from cropland expansion and land management[J]. Global and Planetary Change,2013-01-01,100.