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Satellite - derived increases in net primary productivity across North America, 1982–1998

Jeffrey, Hicke and Gregory, Asner and Randerson, James and Compton, Tucker and Los, Sietse and Birdsey, Richard and Jenkins, Jennifer and Field, Christopher and Holland, Elisabeth A. (2002) Satellite - derived increases in net primary productivity across North America, 1982–1998. Geophysical Research Letters, 29 (10). pp. 691-694. ISSN 0094-8276

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Abstract

We used a new 17-year, high spatial resolution satellite record and a carbon cycle model to explore how changing net primary productivity (NPP) contributed to a proposed carbon (C) sink in North America. We found a small but significant increase in NPP, 0.03 Pg C yr-2 or 8% over 17 years, that could explain a substantial fraction of the C sink. The largest increases occurred in the central and southeastern United States, eastern Canada, and northwestern North America, and were consistent with NPP trends derived from forest inventories and crop yields. Interannual NPP variability was small, implying that the large interannual variability in the C sink found in previous studies were driven by changes in heterotrophic respiration.

Item Type: Journal Article
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions: Pacific Centre for Environment and Sustainable Development (PACE-SD)
Depositing User: Harmindar Kaur
Date Deposited: 22 Jun 2023 02:37
Last Modified: 22 Jun 2023 02:37
URI: http://repository.usp.ac.fj/id/eprint/14057
UNSPECIFIED

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