| 项目编号: | 1355081
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| 项目名称: | Collaborative Research: Forest productivity and hydrological patterns regulate methane fluxes from peatlands in the Amazon basin |
| 作者: | Qianlai Zhuang
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| 承担单位: | Purdue University
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| 批准年: | 2013
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| 开始日期: | 2014-05-01
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| 结束日期: | 2018-04-30
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| 资助金额: | USD103000
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Biological Sciences - Environmental Biology
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| 英文关键词: | peatland
; methane
; amazon
; amazon peatland
; amazon basin
; project
; methane production
; future productivity
; methane release
; tropical peatland
; collaborative effort
; release
; central amazon
; ecological research
; methane emission
; postdoctoral researcher
; future methane emission
; diverse amazonian peatland
; forest productivity
; amazonian peatland
; organic carbon
; methane formation
|
| 英文摘要: | The Amazon basin contains nearly one million square kilometers of wetlands, predominantly peatlands, which are known to be highly productive and to store significant quantities of carbon in plant biomass and soil. Peatlands are characterized by soils rich in organic matter that are often saturated with water, and are therefore often low in oxygen. These conditions often lead to the release of methane, a greenhouse gas with ~25 times the heat-trapping capacity of carbon dioxide, and peatlands are known to be important global sources of methane. Until very recently, peatlands were not expected to be a significant component of the Amazon basin since these wetlands are more common in cold, northern latitudes and there were few records of their existence in the Amazon. In recent years, however, multiple studies aided by satellite imagery and guided field explorations have documented hundreds of peatlands across basins in the West and Central Amazon. An estimated 3-6 millions of tons of organic carbon are contained in these newly discovered Amazon peatlands, which may also represent a significant, previously unrecorded, source of methane annually. The magnitude of organic carbon stored in plants and soils every year vs. that released as methane from these peatlands is not known. This project proposes to evaluate for the first time a set of diverse Amazonian peatlands their organic carbon content, and rates of forest productivity and methane formation and release. This work will also include experimental manipulations of water levels to evaluate responses of productivity and methane release to environmental changes likely to occur as the climate warms. This project will also develop mathematical models of these ecosystems to evaluate the impact of peatlands at larger scales and to propose quantitative predictions for future productivity and methane emissions. Two hypotheses will be tested in this study including (i) whether vegetation change and water regime determine methane production and release, and (ii) whether the response of methane production to altered water regimes is modulated by the diversity of Amazon peatlands.
This work will contribute substantially to our understanding of feedbacks between changes in atmospheric chemistry and climate because of the magnitude of carbon storage in Amazonian peatlands and their potential to be major sources of methane. The research will provide the first comprehensive analysis of these peatlands in the Amazon, and provide quantitative predictions of future methane emissions from the Amazon. This project will also provide data on carbon stocks and fluxes for future comparisons under climatic change and will provide evidence to monitor tropical peatlands for future conservation and policy-making efforts. This collaborative effort including three US and one Peruvian institution, will train a postdoctoral researcher, two graduate and one undergraduate student. This project will also develop a virtual classroom program connecting high school students in Arizona and Iquitos Peru to discuss the impact of ecological research in Amazon peatlands and to track expeditions. Educational activities at the high school level will be targeted to generate an effective conservation-teaching tool to reach a broader public. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/96987
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Qianlai Zhuang. Collaborative Research: Forest productivity and hydrological patterns regulate methane fluxes from peatlands in the Amazon basin. 2013-01-01.
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