Collaborative research: Linking landslide and windstorm exposure to regional carbon stocks and fluxes in the largest US forest carbon reservoir, southeast Alaska

合作研究：将山体滑坡和风暴暴露与美国最大的森林碳库（阿拉斯加东南部）的区域碳储量和通量联系起来

• 批准号: 1711986
• 负责人: Adam Booth
• 金额: $ 27.67万
• 依托单位: Portland State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-07-01 至 2022-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1711986&HistoricalAwards=false
• 关键词: Collaborative; research; Linking; landslide; windstorm

Landslides are important factors in the global carbon cycle as well as a significant risk to human life around the world. This project focuses on better understanding the geophysics of landslides in forested areas, specifically how they move soils and woody debris. Understanding the complex mechanics of these debris flows is essential to determining the relationship between landslides and carbon stocks in forested systems worldwide. By coupling with a regional wind exposure model, this work will also create a new way of visualizing hazard/risk to communities in steep terrain, relevant to many small towns in the US and abroad. Explicit coordination with those communities is planned.This study will address a fundamental question in disturbance ecology: How much disturbance maximizes carbon on a landscape, and where is that carbon located? This is globally relevant, as disturbances are projected to increase as a result of climate warming in most systems. Second, it will incorporate woody debris into mechanical landslide models, which will fundamentally advance our geological understanding of this process. Extensive fieldwork will be coupled with physics-based numerical modeling to synthesize a full scientific understanding of how disturbances influence the landscape and ecosystem with respect to carbon cycling.This award is cofunded by the Geomorphology and Land-use Dynamics Program, the Prediction of and Resilience against Extreme Events Program, and the Experimental Program to Stimulate Competitive Research.

滑坡是全球碳循环中的重要因素，也是世界各地人类生活的重大风险。该项目的重点是更好地了解森林地区的滑坡的地球物理学，特别是它们如何移动土壤和木质碎片。了解这些碎片流的复杂力学对于确定全球森林系统中滑坡和碳库存之间的关系至关重要。通过与区域风曝光模型结合，这项工作还将创建一种新的方式，可将陡峭地形社区的危害/风险形象化为与美国和国外许多小镇有关的危险/风险。计划与这些社区进行明确的协调。这项研究将解决干扰生态学中的一个基本问题：在景观上最大化碳的干扰是多少，那个碳在哪里？这具有全球相关性，因为大多数系统的气候变暖预计会增加干扰。其次，它将将木质碎片纳入机械滑坡模型中，从根本上讲，这将从根本上提高我们对这一过程的地质理解。广泛的野外工作将与基于物理的数值建模相结合，以综合对碳循环方面的骚乱如何影响景观和生态系统的全面科学理解。该奖项由地貌学和土地使用动态计划，对极端事件的预测以及启发有能力的竞争力研究的奖励。

项目成果

Estimated Amounts and Rates of Carbon Mobilized by Landsliding in Old‐Growth Temperate Forests of SE Alaska

• DOI: 10.1029/2021jg006321
• 发表时间: 2021-11
• 期刊: Journal of Geophysical Research: Biogeosciences
• 作者: B. Vascik;A. Booth;B. Buma;M. Berti

Effects of Landslides on Terrestrial Carbon Stocks With a Coupled Geomorphic‐Biologic Model: Southeast Alaska, United States

耦合地貌生物模型的滑坡对陆地碳储量的影响：美国阿拉斯加东南部

• DOI: 10.1029/2022jg007297
• 发表时间: 2023
• 期刊: Journal of Geophysical Research: Biogeosciences
• 作者: Booth, A. M.;Buma, B.;Nagorski, S.
• 通讯作者: Nagorski, S.

Large wood inhibits debris flow runout in forested southeast Alaska

• DOI: 10.1002/esp.4830
• 发表时间: 2020-02-26
• 期刊: EARTH SURFACE PROCESSES AND LANDFORMS
• 影响因子: 3.3
• 作者: Booth, Adam M.;Sifford, Christian;Buma, Brian
• 通讯作者: Buma, Brian