[Personnel: Last_Name='WILLIAMS', Middle_Name='L.', First_Name='DARREL']
Biomass Estimates for Study Area of the Forest Ecosystem Dynamics Project Spatial Data ArchiveEntry ID: FED_BIOMASS
Abstract: Forest Ecosystem Dynamics (FED) Project Spatial Data Archive: Fresh and Dry Biomass Estimates in the International Paper Experimental Forest
The Biospheric Sciences Branch (formerly Earth Resources Branch) within the Laboratory for Terrestrial Physics at NASA's Goddard Space Flight Center and associated University investigators are involved in a research program entitled Forest Ecosystem Dynamics ... (FED) which is fundamentally concerned with vegetation change of forest ecosystems at local to regional spatial scales (100 to 10,000 meters) and temporal scales ranging from monthly to decadal periods (10 to 100 years). The nature and extent of the impacts of these changes, as well as the feedbacks to global climate, may be addressed through modeling the interactions of the vegetation, soil, and energy components of the boreal ecosystem.
The Howland Forest research site lies within the Northern Experimental Forest of International Paper. The natural stands in this boreal-northern hardwood transitional forest consist of spruce-hemlock-fir, aspen-birch, and hemlock-hardwood mixtures. The topography of the region varies from flat to gently rolling, with a maximum elevation change of less than 68 m within 10 km. Due to the region's glacial history, soil drainage classes within a small area may vary widely, from well drained to poorly drained. Consequently, an elaborate patchwork of forest communities has developed, supporting exceptional local species diversity.
Fresh and dry biomass estimates were calculated from allometric equations at selected sites in the International Paper Experimental Forest in Howland, ME. Diameter at breast height (DBH) was measured and species identified for each tree in three 4 meter radius sample plots for 47 forest stands in the International Paper Experimental Forest. Trees with a DBH greater than 3 cm were selected. Measurements were carried out by K. J. Ranson, G. Sun, R. Knox, R. Nelson and D. Williams of NASA/GSFC and John Lee, Forest Scott and others from the University of Maine at Orono.
Allometric equations developed by H.E. Young (see citation) at the University of Maine, Orono were used to calculate fresh, dry, live and dead biomass. The equations are in the form: ln(wt lbs.) = b0 + bl(ln(dbh inches)) for each species. Locations for the sites were measured relative to known ground features and were scaled off of the USGS 7.5' Howland quadrangle with consultation from imagery.
Data Set Citation
Dataset Originator/Creator: Darrel L. Williams
Dataset Title: Biomass field Site Sampling Data
Dataset Series Name: FED Project Home Page
Dataset Release Place: NASA/GSFC
Dataset Publisher: NASA/GSFC
Data Presentation Form: Map ImageOnline Resource: http://fedwww.gsfc.nasa.gov/descriptions/biomass-new.html
Start Date: 1992-04-01Stop Date: 1992-12-31
ISO Topic Category
Distribution Media: WWW
Distribution Format: ARC/INFO EXPORT
Role: TECHNICAL CONTACT
Email: Darrel.L.Williams at nasa.gov
NASA Goddard Space Flight Center Mailstop 614.0
Province or State: MD
Postal Code: 20771
Role: DIF AUTHOR
Phone: (301) 614-6898
Email: Tyler.B.Stevens at nasa.gov
NASA Goddard Space Flight Center Global Change Master Directory
Province or State: MD
Postal Code: 20771
Ranson, K.J., and G. Sun, 1994. Northern forest classification using
temporal multi-frequency and multi-polarimetric SAR images.
Remote Sensing of Environment, 47:142-153.
Young, H.E., et. al. 1980. Weight Tables for Tree and Shrub Species
in Maine. Life Sciences and Agricultural Experimant Station,
University of Maine at Orono, Miscellaneous Report 230.
Levine, E., K.J. Ranson, J.A. Smith, D.L. Williams, R.G. Knox,
H.H. Shugart, D.L. Urban, and W.T. Lawrence. 1993. Forest
ecosystem dynamics: linking forest succession, soil process and
radiation models. Ecological Modelling, 65:199-219.
Creation and Review Dates
Last DIF Revision Date: 2011-04-06