Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 9727311 |
| Integrating Linkages Among Aquatic and Terrestrial Components of Arid Landscapes | |
| Stuart Fisher | |
| 主持机构 | Arizona State University |
| 开始日期 | 1998-09-01 |
| 结束日期 | 2001-02-28 |
| 资助经费 | 255000(USD) |
| 项目类别 | Standard Grant |
| 资助机构 | US-NSF（美国国家科学基金会） |
| 项目所属计划 | ECOSYSTEM STUDIES |
| 语种 | 英语 |
| 国家 | 美国 |
| 英文简介 | Abstract 97-27311 Fisher Integrating linkages among aquatic and terrestrial components of arid landscapes This research will address the following puzzle: In the arid Southwest, atmospheric deposition of nitrogen (N) exceeds export by streams and rivers. While measurements suggest a huge (>10-fold) annual storage increment in the catchment and widespread N enrichment of the landscape, the opposite is true - usable N is rare. Both terrestrial and aquatic primary production are N-limited, and N2 fixing organisms abound in both environments. The objective of this project is to identify the hot spots (in space and time) for N transformation and retention and thereby account for the catchment-level N discrepancy. The investigators will focus on methods development for the flowpath approach; experiments in the uplands, tributary system and stream-riparian corridor; and developing an understanding of variance in these systems. The work will concentrate on processes rather than patterns, and is expected to lay the underpinnings for linkages between the empirical work and conceptual and mathematical models now under development. |
| 来源学科分类 | Biological Sciences |
| URL | https://www.nsf.gov/awardsearch/showAward?AWD_ID=9727311 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/341149 |
| 推荐引用方式 GB/T 7714 | Stuart Fisher.Integrating Linkages Among Aquatic and Terrestrial Components of Arid Landscapes.1998. |
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