| DOI: | 10.2172/1129843
|
| 报告号: | DOE-MBL-5421
|
| 报告题名: | Long-term soil warming and Carbon Cycle Feedbacks to the Climate System |
| 作者: | Melillo, Jerry M.
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| 出版年: | 2014
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| 发表日期: | 2014-04-30
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| 国家: | 美国
|
| 语种: | 英语
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| 中文主题词: | 碳
; 氮
; 土壤温度
; 生物量
; 二氧化碳
|
| 主题词: | CARBON
; NITROGEN
; SOIL TEMPERATURE
; BIOMASS
; CARBON DIOXIDE
|
| 英文摘要: | The primary objective of the proposed research was to quantify and explain the effects of a sustained in situ 5oC soil temperature increase on net carbon (C) storage in a northeastern deciduous forest ecosystem. The research was done at an established soil warming experiment at the Harvard Forest in central Massachusetts â Barre Woods site established in 2001. In the field, a series of plant and soil measurements were made to quantify changes in C storage in the ecosystem and to provide insights into the possible relationships between C-storage changes and nitrogen (N) cycling changes in the warmed plots. Field measurements included: 1) annual woody increment; 2) litterfall; 3) carbon dioxide (CO2) efflux from the soil surface; 4) root biomass and respiration; 5) microbial biomass; and 6) net N mineralization and net nitrification rates. This research was designed to increase our understanding of how global warming will affect the capacity of temperate forest ecosystems to store C. The work explored how soil warming changes the interactions between the C and N cycles, and how these changes affect land-atmosphere feedbacks. This core research question framed the project â What are the effects of a sustained in situ 5oC soil temperature increase on net carbon (C) storage in a northeastern deciduous forest ecosystem? A second critical question was addressed in this research â What are the effects of a sustained in situ 5{degrees}C soil temperature increase on nitrogen (N) cycling in a northeastern deciduous forest ecosystem? |
| URL: | http://www.osti.gov/scitech/servlets/purl/1129843
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/41536
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1129843.pdf（150KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Melillo, Jerry M.. Long-term soil warming and Carbon Cycle Feedbacks to the Climate System. 2014-01-01.
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