A5008085187- Forest ecology and management
- Forest Management and Policy
- Fire effects on ecosystems
- Remote Sensing and LiDAR Applications
- Forest Ecology and Biodiversity Studies
- Rangeland and Wildlife Management
- Plant Water Relations and Carbon Dynamics
- Forest Insect Ecology and Management
- Atmospheric and Environmental Gas Dynamics
- Ecology and Vegetation Dynamics Studies
- Soil Carbon and Nitrogen Dynamics
- Forest Biomass Utilization and Management
- Seedling growth and survival studies
- Soil Geostatistics and Mapping
- Bioenergy crop production and management
- Remote Sensing in Agriculture
- Mycorrhizal Fungi and Plant Interactions
- Environmental Impact and Sustainability
- Peatlands and Wetlands Ecology
- Vehicle emissions and performance
- Environmental Conservation and Management
- Aeolian processes and effects
- Economic and Environmental Valuation
- Tree-ring climate responses
- Conservation, Biodiversity, and Resource Management
Northern Research Station
2016-2025
US Forest Service
2016-2025
United States Department of Agriculture
2011-2024
University of Helsinki
2023
Southern Research Station
2023
University of Tennessee at Knoxville
2023
Minnesota Department of Natural Resources
2011-2023
University of Minnesota
2007-2023
Research Council of Finland
2023
Ecological Society of America
2023
Live woody vegetation is the largest reservoir of biomass carbon, with its restoration considered one most effective natural climate solutions. However, terrestrial carbon fluxes remain uncertainty in global cycle. Here, we develop spatially explicit estimates stock changes live from 2000 to 2019 using measurements ground, air, and space. We show that has removed 4.9 5.5 PgC year −1 atmosphere, offsetting 4.6 ± 0.1 gross emissions disturbances adding substantially (0.23 0.88 ) stocks. Gross...
Several initiatives have been proposed to mitigate forest loss and climate change through tree planting as well maintaining restoring ecosystems. These both inspired by global assessments of attributes their contributions offset carbon dioxide (CO2) emissions. Here we use data from more than 130,000 national inventory plots describe the contribution nearly 1.4 trillion trees on forestland in conterminous United States CO2 emissions potential enhance sequestration capacity productive...
Plant-fungal symbioses play critical roles in vegetation dynamics and nutrient cycling, modulating the impacts of global changes on ecosystem functioning. Here, we used forest inventory data consisting more than 3 million trees to develop a spatially resolved "mycorrhizal tree map" contiguous United States. We show that abundances two dominant mycorrhizal groups-arbuscular (AM) ectomycorrhizal trees-are associated primarily with climate. Further, anthropogenic influences, nitrogen (N)...
Forests are integral to the global land carbon sink, which has sequestered ~30% of anthropogenic emissions over recent decades. The persistence this sink depends on balance positive drivers that increase ecosystem storage-e.g., CO
Soils are Earth's largest terrestrial carbon (C) pool, and their responsiveness to land use management make them appealing targets for strategies enhance C sequestration. Numerous studies have identified practices that increase soil C, but inferences often based on limited data extrapolated over large areas. Here, we combine 15,000 observations from two national-level databases with remote sensing information address the impacts of reforestation sequestration in topsoils (uppermost mineral...
Abstract A key uncertainty in quantifying dead wood carbon (C) stocks—which comprise ~8% of total forest C pools globally—is a lack accurate fractions (CFs) that are employed to convert woody biomass into C. Most estimation protocols utilize default CF 50%, but live tree studies suggest this value is an over-estimate. Here, we compile and analyze global database CFs trees, showing average 48.5% across forests, deviating significantly from varying systematically among biomes, taxonomic...
Abstract Changing forest disturbance regimes and climate are driving accelerated tree mortality across temperate forests. However, it remains unknown if elevated has induced decline of populations the ecological, economic, social benefits they provide. Here, we develop a standardized demographic index use to quantify trends in population dynamics over last two decades western United States. The rate pattern change observe species size-distributions is alarming often undesirable. We...
Abstract Background In most regions and ecosystems, soils are the largest terrestrial carbon pool. Their potential vulnerability to climate land use change, management, other drivers, along with soils’ ability mitigate change through sequestration, makes them important balance management. To date, studies of soil management have been based at either large or site-specific scales, resulting in broad generalizations narrow conclusions, respectively. Advancing science practice requires...
Locating terrestrial sources and sinks of carbon (C) will be critical to developing strategies that contribute the climate change mitigation goals Paris Agreement. Here we present spatially resolved estimates net C across United States (US) forest lands between 2006 2010 attribute them natural anthropogenic processes. Forests in conterminous US sequestered −460 ± 48 Tg year−1, while losses from disturbance averaged 191 10 year−1. Combining gains results −269 49 New forests gained −8 1...
Soil organic carbon (SOC) is the largest terrestrial (C) sink on Earth; this pool plays a critical role in ecosystem processes and climate change. Given cost time required to measure SOC, particularly changes many signatory nations United Nations Framework Convention Climate Change report estimates of SOC stocks stock using default values from Intergovernmental Panel or country-specific models. In States, forests monitored by national forest inventory (NFI) conducted Forest Inventory...
Abstract Downed coarse woody debris, also known as detritus or downed dead wood, is challenging to estimate for many reasons, including irregular shapes, multiple stages of decay, and the difficulty identifying species. In addition, some properties are commonly not measured, such wood density carbon concentration. As a result, there have been few previous evaluations uncertainty in estimates which necessary analysis interpretation data. To address this shortcoming, we quantified...
Abstract The quantity and condition of downed dead wood (DDW) is emerging as a major factor governing forest ecosystem processes such carbon cycling, fire behavior, tree regeneration. Despite this, systematic inventories DDW are sparse if not absent across biomes. Forest Inventory Analysis program the United States (US) Service has conducted an annual inventory on all coterminous US land since 2002 (~1 plot per 38,850 ha), with sample intensification occurring 2012 19,425 ha). data organized...
Abstract Soil organic carbon (SOC) information is fundamental for improving global cycle modeling efforts, but discrepancies exist from country‐to‐global scales. We predicted the spatial distribution of SOC stocks (topsoil; 0–30 cm) and quantified uncertainty across Mexico conterminous United States (CONUS). used a multisource dataset (>10 000 pedons, between 1991 2010) coupled with simulated annealing regression framework that accounts variable selection. Our model explained ~50%...