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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

基本信息

批准号：
1711974
负责人：
Sonia Nagorski
金额：
$ 27.89万
依托单位：
University of Alaska Southeast Juneau Campus
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=1711974&HistoricalAwards=false
关键词：
Collaborative research Linking landslide windstorm

项目摘要

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山体滑坡的地球物理学，特别是它们如何移动土壤和木质残体。了解这些泥石流的复杂机制对于确定全球森林系统中山体滑坡和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，这项工作还将为陡峭地形中的社区创造一种可视化危险/风险的新方法，与美国和国外的许多小城镇相关。本研究将解决干扰生态学中的一个基本问题：多大的干扰使景观上的碳最大化，碳位于何处？这是全球性的，因为由于大多数系统的气候变暖，预计扰动会增加。其次，它将把木质残体纳入滑坡力学模型，这将从根本上推进我们对这一过程的地质认识。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景观和生态系统的碳循环的全面科学理解。该奖项由地貌学和土地利用动态计划，极端事件预测和恢复计划以及刺激竞争研究的实验计划共同资助。