DOI: 10.1111/gcb.13876
Scopus记录号: 2-s2.0-85030090204
论文题名: Negative emissions from stopping deforestation and forest degradation, globally
作者: Houghton R.A. ; Nassikas A.A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 1 起始页码: 350
结束页码: 359
语种: 英语
英文关键词: carbon sinks
; forests
; land management
; land use
; negative emissions
Scopus关键词: carbon emission
; carbon sequestration
; carbon sink
; deforestation
; growth rate
; land management
; land use change
; secondary forest
; carbon
; agriculture
; atmosphere
; carbon sequestration
; climate change
; energy conservation
; environmental protection
; forest
; forestry
; metabolism
; time factor
; wood
; Agriculture
; Atmosphere
; Carbon
; Carbon Sequestration
; Climate Change
; Conservation of Energy Resources
; Conservation of Natural Resources
; Forestry
; Forests
; Time Factors
; Wood
英文摘要: Forest growth provides negative emissions of carbon that could help keep the earth's surface temperature from exceeding 2°C, but the global potential is uncertain. Here we use land-use information from the FAO and a bookkeeping model to calculate the potential negative emissions that would result from allowing secondary forests to recover. We find the current gross carbon sink in forests recovering from harvests and abandoned agriculture to be −4.4 PgC/year, globally. The sink represents the potential for negative emissions if positive emissions from deforestation and wood harvest were eliminated. However, the sink is largely offset by emissions from wood products built up over the last century. Accounting for these committed emissions, we estimate that stopping deforestation and allowing secondary forests to grow would yield cumulative negative emissions between 2016 and 2100 of about 120 PgC, globally. Extending the lifetimes of wood products could potentially remove another 10 PgC from the atmosphere, for a total of approximately 130 PgC, or about 13 years of fossil fuel use at today's rate. As an upper limit, the estimate is conservative. It is based largely on past and current practices. But if greater negative emissions are to be realized, they will require an expansion of forest area, greater efficiencies in converting harvested wood to long-lasting products and sources of energy, and novel approaches for sequestering carbon in soils. That is, they will require current management practices to change. © 2017 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110563
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Woods Hole Research Center, Falmouth, MA, United States
Recommended Citation:
Houghton R.A.,Nassikas A.A.. Negative emissions from stopping deforestation and forest degradation, globally[J]. Global Change Biology,2018-01-01,24(1)