| DOI: | 10.2172/1257514
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| 报告号: | DOE-Colorado--06968
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| 报告题名: | Carbon-water Cycling in the Critical Zone: Understanding Ecosystem Process Variability Across Complex Terrain |
| 作者: | Barnard, Holly; Brooks, Paul
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| 出版年: | 2016
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| 发表日期: | 2016-06-16
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| 总页数: | 6
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| 国家: | 美国
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| 语种: | 英语
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| 中文主题词: | 土壤
; 碳
; 土壤呼吸
; 生物量
; 土壤含水量
; 景观
; 地形学
; 排水
|
| 主题词: | SOILS
; CARBON
; SOIL RESPIRATION
; BIOMASS
; SOIL MOISTURE
; LANDSCAPE
; TOPOGRAPHY
; DRAINAGE
|
| 英文摘要: | One of the largest knowledge gaps in environmental science is the ability to understand and predict how ecosystems will respond to future climate variability. The links between vegetation, hydrology, and climate that control carbon sequestration in plant biomass and soils remain poorly understood. Soil respiration is the second largest carbon flux of terrestrial ecosystems, yet there is no consensus on how respiration will change as water availability and temperature co-vary. To address this knowledge gap, we use the variation in soil development and topography across an elevation and climate gradient on the Front Range of Colorado to conduct a natural experiment that enables us to examine the co-evolution of soil carbon, vegetation, hydrology, and climate in an accessible field laboratory. The goal of this project is to further our ability to combine plant water availability, carbon flux and storage, and topographically driven hydrometrics into a watershed scale predictive model of carbon balance. We hypothesize: (i) landscape structure and hydrology are important controls on soil respiration as a result of spatial variability in both physical and biological drivers: (ii) variation in rates of soil respiration during the growing season is due to corresponding shifts in belowground carbon inputs from vegetation; and (iii) aboveground carbon storage (biomass) and species composition are directly correlated with soil moisture and therefore, can be directly related to subsurface drainage patterns. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1257514
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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/42085
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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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| 1257514.pdf（213KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Barnard, Holly,Brooks, Paul. Carbon-water Cycling in the Critical Zone: Understanding Ecosystem Process Variability Across Complex Terrain. 2016-01-01.
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