SGER: Development of a landscape approach for understanding the contribution of landsliding to carbon budgets: Using the Rio Jones of the Sierra de Las Minas, Guatemala as a test w

SGER：开发一种景观方法来了解滑坡对碳预算的贡献：使用危地马拉拉斯米纳斯山脉的里约琼斯作为测试

• 批准号: 0909271
• 负责人: Carla Restrepo
• 金额: $ 4.06万
• 依托单位: University of Puerto Rico-Rio Piedras
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-04-15 至 2011-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0909271&HistoricalAwards=false
• 关键词: SGER; Development; landscape; approach; understanding

Landsliding is a spatially and temporarily variable process with potentially large effects on regional C budgets. This variability may have important consequences for estimating C pools and fluxes given the contribution of landsliding to the removal of organic C contained in vegetation and soil from the hillslopes, its deposition along the hillslope-fluvial interface, and its subsequent regeneration on landslides undergoing succession. This project will develop a landscape approach for quantifying C budgets associated with landsliding based on the integration of spatial (maps) and non-spatial (field measurements of C in vegetation, soil, and water) data into a GIS modeling framework for a model watershed in the Sierra de Las Minas, Guatemala. Whereas the model will generate subwatershed- and watershed-scale estimates of carbon pools and fluxes, the field data will permit a comparison between the C isotopic composition of soils, landslide deposits, and water and therefore provide a better understanding of C transfer to the fluvial system.The development of a landscape approach to examine watershed and subwatershed-scale C pools and fluxes associated with landsliding is a first step towards understanding the regional impact of landslide populations on C budgets, and ultimately its influence on global climate. Furthermore, this proposal will shed light into the factors that underlie slope instability in a tropical mountain range, including recovery processes. Finally, this project will generate basic data that will help guide conservation and management strategies for the Sierra de Las Minas Biosphere Reserve of Guatemela, a hotspot of diversity that is highly vulnerable to landsliding.

陆滑是一个空间和临时可变的过程，对区域C预算有潜在的影响。 鉴于土地滑动对去除山坡和土壤中包含的有机c的贡献，山坡上的有机c的贡献，其沿山坡 - 弗洛维亚式界面的沉积以及其随后在landSlides上的再生。 该项目将开发一种景观方法，用于根据空间（MAP）和非空间（植被，土壤和水中C的现场测量）数据量化与陆地滑坡相关的C预算，以在GIS建模框架中，用于在Guatemala Sierra de Las Minas中的模型水域。虽然该模型将产生碳池和通量的次级和流域尺度估计值，但现场数据将允许比较土壤的C同位素组成之间，陆地矿床，水面沉积和水，因此可以更好地了解C与CO的CO转移到途径。是理解滑坡人口对C预算的区域影响的第一步，最终是其对全球气候的影响。 此外，该提案将阐明在热带山脉（包括恢复过程）中斜坡不稳定的因素。 最后，该项目将生成基本数据，以帮助指导危地梅拉塞拉利亚斯·米纳斯生物圈保护区的保护和管理策略，这是一种多样性的热点，非常容易受到陆地滑道的影响。