| 项目编号: | 1352627
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| 项目名称: | CAREER: Persistence of soil organic matter in dynamic landscapes: interactive effects of fire and erosion |
| 作者: | Asmeret Asefaw Berhe
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| 承担单位: | University of California - Merced
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| 批准年: | 2013
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| 开始日期: | 2014-04-01
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| 结束日期: | 2019-03-31
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| 资助金额: | USD478789
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| 资助来源: | US-NSF
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| 项目类别: | Continuing 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: | Geosciences - Earth Sciences
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| 英文关键词: | som persistence
; dynamic landscape
; fire-prone
; fire
; persistence
; soil material
; soil carbon
; fire-prone system
; fire-adapted upland ecosystem
; fire-prone upland ecosystem
; bulk soil organic matter
; career project
; erosional distribution
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| 英文摘要: | Fire, erosion, and soil carbon (C) storage and persistence overlap in space and time. There is incomplete understanding on how and why the interaction of fire and erosional distribution of soil materials control persistence of bulk soil organic matter (SOM) and pyrogenic C (PyC, also referred to as black carbon) in dynamic landscapes. This work will use molecular- and nano-scale techniques to determine how SOM persistence varies along multiple spatial (plot, hillslope, and watersheds) and temporal scales (seasonal, annual, and decadal). The outcome of this project will be better integration of biogeochemical and geomorphological approaches to derive improved representation of mechanisms that regulate SOM persistence in dynamic landscapes that routinely experience more than one perturbation.
This CAREER project will develop improved understanding on the dynamics of bulk SOM and PyC in fire-adapted upland ecosystems and enable teaching of graduate and undergraduate students, and K-12 teachers. This study will generate transformational results in the way to (a) account for changes in C storage in fire-prone systems, and (b) model response of fire-prone upland ecosystems to changes in climate and/or management practices. Moreover, the investigator will: (1) teach undergraduate students and high school teachers about the critical zone, and develop and publish lesson plans for high-school level earth system science; (2) provide scientific training for a graduate student and a postdoc; and (3) learn advanced techniques that she will apply in her research and teaching. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/97122
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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: | |
Asmeret Asefaw Berhe. CAREER: Persistence of soil organic matter in dynamic landscapes: interactive effects of fire and erosion. 2013-01-01.
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