LTREB Renewal: Drivers of temperate forest carbon storage from canopy closure through successional time

LTREB 更新：从树冠关闭到演替时间的温带森林碳储存驱动因素

• 批准号: 2245670
• 负责人: Lucas Nave
• 金额: $ 59.47万
• 依托单位: Michigan Technological University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-10-01 至 2025-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2245670&HistoricalAwards=false
• 关键词: LTREB; Renewal; Drivers; temperate; forest

Forest disturbances, such as clear-cutting and fire, typically lead to large losses of carbon and nutrients from forests and their soils. Virtually all forests in the Eastern US are recovering from such disturbances, whether natural or human-caused. It is, however, not well understood what mechanisms control recovery times of forest carbon and nutrient stocks following disturbance. Also not well known is how plant growth, soil development and climate variation interactively regulate recoveries of carbon and nutrients in aging forests. This project uses long-term experimental plots at the University of Michigan Biological Station (a 110-year-old field station in northern Michigan) to investigate how changes in forests lead to overall carbon capture and storage. Globally, forests remove approximately 1/4 of carbon emissions from fossil fuel combustion, with temperate forests, like those studied here, being responsible for almost half of that carbon removal from the atmosphere. However, it is uncertain whether forests will continue to partially offset human-derived carbon emissions as they age and mature following past large-scale disturbances. This project provides critical data and mechanistic understanding needed to predict the magnitude and duration of continued temperate forest carbon uptake, and the ability of forests to provide fiber, fuel, habitat, and many other benefits to society.This long-term (10-year) project began to answer globally significant questions in its productive first 5 years. Researchers are measuring the forests and soils in 6 forest stands (approx. 2 acres each) that were experimentally cut and burned in either 1936, 1948, 1954, 1980, 1998, or 2017. These cutting and burning treatments replicate larger-scale cutting and burning that occurred in the early 1900s across the Great Lakes region within which the experimental stands are nested. Forest structural measurements include patterns of tree, leaf, and branch density and arrangement. Soil measurements include both nutrient distribution and availability and soil carbon fluxes. By using nearby old forests (130- to 200-yr-old) that were not severely cut and burned as reference points, the team is linking disturbance, climate, soil, and vegetation controls to long-term patterns of carbon sequestration in forests that are representative of other forests across the northern U.S. and similar regions in Canada, Europe and Asia.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

森林干扰（例如清除和火灾）通常会导致森林及其土壤中的碳和养分大量损失。实际上，美国东部的所有森林都从这种干扰中恢复过来，无论是自然的还是人为造成的。但是，尚不清楚哪些机制控制着干扰后森林碳和养分库存的恢复时间。 同样尚不清楚的是植物生长，土壤发育和气候变化如何交互调节衰老森林中碳和养分的回收率。该项目使用密歇根大学生物站（密歇根州北部110年历史的现年现场现场站）的长期实验地块研究森林的变化如何导致整体碳捕获和储存。在全球范围内，森林从化石燃料燃烧中清除了大约1/4的碳排放，温带森林（如这里研究的森林），造成了几乎一半从大气中去除碳的碳。但是，尚不确定森林是否会继续部分抵消人类衍生的碳排放，并且在过去的大规模干扰之后，它们的年龄和成熟。该项目提供了预测持续的温带森林碳吸收的幅度和持续时间所需的关键数据和机械理解，以及森林提供纤维，燃料，栖息地以及对社会的许多其他好处的能力。这项长期（10年）项目开始在其生产性的第一年中回答全球重要的问题。研究人员正在测量在1936年，1948年，1948年，1954年，1980年，1998年或2017年，在6个森林林（每个大约2英亩）中测量了森林和土壤。这些切割和燃烧的处理复制了1900年代在大型湖泊区域中发生的大型切割和燃烧。森林结构测量包括树，叶子和分支密度和排列的模式。土壤测量值包括养分分布和可用性以及土壤碳通量。通过使用附近的旧森林（130至200年龄），这些森林并未被严重砍伐并燃烧为参考点，该团队将干扰，气候，土壤和植被控制与长期碳固执的长期模式联系起来，这些森林中的其他森林代表了美国北部森林的其他森林，并通过加拿大，欧洲和亚洲的类似地区进行了反映的统治，并以此反映了nsf的代表，并以此为基础。智力优点和更广泛的影响审查标准。

项目成果

Fire after clear-cut harvesting minimally affects the recovery of ecosystem carbon pools and fluxes in a Great Lakes forest

砍伐后的火灾对五大湖森林生态系统碳库和通量的恢复影响最小

• DOI: 10.1016/j.foreco.2022.120301
• 发表时间: 2022
• 期刊: Forest Ecology and Management
• 影响因子: 3.7
• 作者: Clay, Cameron;Nave, Luke;Nadelhoffer, Knute;Vogel, Christoph;Propson, Brooke;Den Uyl, John;Hickey, Laura J.;Barry, Alexandra;Gough, Christopher M.
• 通讯作者: Gough, Christopher M.

Disturbance has variable effects on the structural complexity of a temperate forest landscape

干扰对温带森林景观的结构复杂性有不同的影响

• DOI: 10.1016/j.ecolind.2022.109004
• 发表时间: 2022
• 期刊: Ecological Indicators
• 影响因子: 6.9
• 作者: Gough, Christopher M.;Atkins, Jeff W.;Fahey, Robert T.;Curtis, Peter S.;Bohrer, Gil;Hardiman, Brady S.;Hickey, Laura J.;Nave, Lucas E.;Niedermaier, Kerstin M.;Clay, Cameron
• 通讯作者: Clay, Cameron

Mechanistically-grounded pathways connect remotely sensed canopy structure to soil respiration

机械接地路径将遥感冠层结构与土壤呼吸连接起来

• DOI: 10.1016/j.scitotenv.2022.158267
• 发表时间: 2022
• 期刊: Science of The Total Environment
• 影响因子: 9.8
• 作者: Hickey, Laura J.;Nave, Lucas E.;Nadelhoffer, Knute J.;Clay, Cameron;Marini, Alexandra I.;Gough, Christopher M.
• 通讯作者: Gough, Christopher M.