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Projects > M - O > NACP-CHOPPING-01

Preferred term

NACP-CHOPPING-01  

Definition

  • Quantifying Changes in Carbon Pools with Shrub Invasion of Desert Grasslands using Multi-Angle Data from EOS Terra and Aqua NACP Project Profile http://www.nacarbon.org/cgi-nacp/web/investigations/inv_pgp.pl?pgid=199 In tandem with the ongoing world-wide increase in the abundance of woody plants within former grasslands, desert grasslands throughout the southwestern U.S. have experienced a dramatic increase in the abundance of shrubs since the end of the 19th century. The region thus provides an adequate subject for the development of remote sensing and modeling methods which will be useful at global scales and in other regions. We propose to estimate carbon pools in this region using remotely-sensed inputs from the NASA Earth Observing System satellites Terra and Aqua. We are working to refine mapping of vegetation through improved plant community type differentiation, estimating contributions from soil, shrub and grass components and provision of structural measures. This addresses three aspects of the problem of estimating C pools: large differences in total C storage in different plant communities; the need to reliably estimate the areal proportions of soil, grass and shrubs; and the need to obtain measures of canopy structure over large areas. We are working towards these goals using multi-angle spectral reflectance data and derived parameters and metrics from the MISR and MODIS instruments. The approach is based on the premise that incorporating multi-angle measures in plant community type mapping results in substantial improvements in classification and mapping; that canopy heterogeneity is reflected in these data; and that useful canopy structure measures are available in the angular domain. From 2006, we began working at the regional scale and included maps of forest canopy parameters from MISR. (en)

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https://gcmd.earthdata.nasa.gov/kms/concept/89fb7b07-4baf-45ea-9f26-1309850e3576

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