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.

山体滑坡是全球碳循环的重要因素，也是全球人类生命的重大风险。该项目侧重于更好地了解森林地区滑坡的地球物理学，特别是它们如何移动土壤和木质碎片。了解这些泥石流的复杂机制对于确定全球森林系统中滑坡与碳储量之间的关系至关重要。通过与区域风暴露模型相结合，这项工作还将创造一种新的方式来可视化陡峭地形社区的危害/风险，这与美国和国外的许多小城镇有关。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：多少干扰使景观中的碳最大化，这些碳位于何处？这是与全球相关的，因为在大多数系统中，由于气候变暖，预计干扰会增加。其次，它将木质碎屑纳入机械滑坡模型，这将从根本上推进我们对这一过程的地质理解。广泛的实地考察将与基于物理的数值模拟相结合，以综合对干扰如何影响碳循环方面的景观和生态系统的全面科学理解。该奖项由地貌学和土地利用动力学项目、极端事件预测和恢复能力项目以及刺激竞争性研究的实验项目共同资助。

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