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Keyword: random forests

TreeMap: A tree-level model of conterminous U.S. forests

Tools Posted on: January 15, 2021
TreeMap provides a 30x30m-resolution gridded dataset of forest plot identifiers for the conterminous United States. Forest plots from the USDA Forest Service Forest Inventory and Analysis program (FIA) were imputed to gridded c2014 landscape data provided by the LANDFIRE project using topographic, biophysical, and disturbance variables. The output consisted of a raster map of plot identifiers.

The “living map” of Mexican spotted owl habitat

Projects Posted on: January 13, 2021
Researchers and managers have partnered to create cutting-edge, high-resolution, high-accuracy maps of Mexican spotted owl habitat - as well as long-term habitat trends - that can be updated annually as new data become available. An interactive Google Earth Engine experimental app allows end-users to explore mapped products. 

Fire Lab tree list: A tree-level model of the conterminous United States landscape circa 2014

Datasets Posted on: December 30, 2020
Observations of the forests of the conterminous United States at the level of individual trees would be of utility for any number of applications, ranging from modelling the effect of wildland fire on terrestrial carbon resources to estimation of timber volume. While such observations do exist at selected spots such as established forest plots, most forests have not been mapped with this level of specificity.

Bioclimatic modeling of potential vegetation types as an alternative to species distribution models for projecting plant species shifts under changing climates

Publications Posted on: September 29, 2020
Land managers need new tools for planning novel futures due to climate change. Species distribution modeling (SDM) has been used extensively to predict future distributions of species under different climates, but their map products are often too coarse for fine-scale operational use.

Classifying large wildfires in the United States by land cover

Publications Posted on: September 28, 2020
Fire is an ecological process that also has socio-economic effects. To learn more about fire occurrence, I examined relationships between land classes and about 12,000 spatially delineated large wildfires (defined here as uncontrolled fires _200 ha, although definitions vary) during 1999 to 2017 in the conterminous United States.

Locating forest management units using remote sensing and geostatistical tools in North-Central Washington, USA

Publications Posted on: June 22, 2020
In this study, we share an approach to locate and map forest management units with high accuracy and with relatively rapid turnaround. Our study area consists of private, state, and federal land holdings that cover four counties in North-Central Washington, USA (Kittitas, Okanogan, Chelan and Douglas).

US National Maps Attributing Forest Change: 1986-2010

Publications Posted on: June 20, 2020
National monitoring of forestlands and the processes causing canopy cover loss, be they abrupt or gradual, partial or stand clearing, temporary (disturbance) or persisting (deforestation), are necessary at fine scales to inform management, science and policy.

Random forests for classification in ecology

Publications Posted on: September 10, 2019
Classification procedures are some of the most widely used statistical methods in ecology. Random forests (RF) is a new and powerful statistical classifier that is well established in other disciplines but is relatively unknown in ecology.

Predicting understory vegetation structure in selected western forests of the United States using FIA inventory data

Publications Posted on: July 25, 2019
Understory vegetation structure and its relationship with forest canopies and site conditions are important determinants of carbon stocks, wildlife habitat, and fuel loading for wildland fire assessments. Comprehensive studies are needed to assess these relationships through the use of consistently collected field-based data.

Fire Lab tree list: A tree-level model of the western US circa 2009 v1

Datasets Posted on: March 15, 2018
Maps of the number, size, and species of trees in forests across the western United States are desirable for many applications such as estimating terrestrial carbon resources, predicting tree mortality following wildfires, and for forest inventory.