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Projects > M - O > NACP-GOWARD-01

Preferred term

NACP-GOWARD-01  

Definition

  • North American Forest Disturbance and Regrowth since 1972: Empirical Assessment with Field Measurements and Satellite Remotely Sensed Observations NACP Project Profile http://www.nacarbon.org/cgi-nacp/web/investigations/inv_pgp.pl?pgid=44 In this study we are combining the USFS FIA and Landsat information sources to characterize recent trends in North American forest disturbance and regrowth. Initial projects by this team have shown that the basic patterns of disturbance can be evaluated using change detection methods and that regrowth can be evaluated from inferences of forest structural change noted by spectral reflectance changes. Collaboration with the US Forest Service has provided important access to Forest Inventory and Analysis (FIA) data that permit direct comparison of the satellite-based spectral reflectance patterns with ground-based forest structural attributes. Finally, our capacity to process large volumes of Landsat satellite data has been demonstrated by a series of recent projects (REALM, LEDAPS). We will employ a statistically robust sampling system to select ~25 Landsat WRS locations within the coterminous US to conduct compartive Landsat/FIA analysis of recent disturbance and regrowth patterns. In addition, we are collaborating with our Canadian colleagues as they pursue similar analyses in their country. Combined, these analyzes will provide a continental-scale assessment of North American forest dynamics from 1972 to present. A dense biennual time-series of Landsat imagery 1972-2005) are being assembled for each lselected ocation. From these data the spatio-temporal trends in disturbance and regrowth, as will as their relation to “driving” variables (climate, management regime, etc) will be extracted. The combination Landsat-observed temporal spectral trajectories canopy reflectance modeling, , and plot-level FIA data, will be used to evaluate the diversity in regrowth dynamics that occur on this continent. (en)

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https://gcmd.earthdata.nasa.gov/kms/concept/d74f8a76-557a-4194-8c51-f750ac560bd3

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