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Comparing global models of terrestrial net primary productivity (NPP): global pattern and differentiation by major biomes
Author(s) -
Kicklighter D. W.,
Bondeau A.,
Schloss A. L.,
Kaduk J.,
Mcguire A. D.,
Intercomparison ThE. Participants OF. ThE. Potsdam NpP. Model
Publication year - 1999
Publication title -
global change biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.146
H-Index - 255
eISSN - 1365-2486
pISSN - 1354-1013
DOI - 10.1046/j.1365-2486.1999.00003.x
Subject(s) - primary production , biome , normalized difference vegetation index , evergreen , environmental science , taiga , vegetation (pathology) , productivity , climatology , atmospheric sciences , leaf area index , physical geography , ecology , ecosystem , geography , forestry , geology , biology , medicine , macroeconomics , pathology , economics
Summary Annual and seasonal net primary productivity estimates (NPP) of 15 global models across latitudinal zones and biomes are compared. The models simulated NPP for contemporary climate using common, spatially explicit data sets for climate, soil texture, and normalized difference vegetation index (NDVI). Differences among NPP estimates varied over space and time. The largest differences occur during the summer months in boreal forests (50° to 60°N) and during the dry seasons of tropical evergreen forests. Differences in NPP estimates are related to model assumptions about vegetation structure, model parameterizations, and input data sets.