Historical and future land use effects on N2O and NO emissions using an ensemble modeling approach: Costa Rica's Caribbean lowlands as an example

Global Biogeochemical Cycles
By: , and 

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Abstract

[1] The humid tropical zone is a major source area for N2O and NO emissions to the atmosphere. Local emission rates vary widely with local conditions, particularly land use practices which swiftly change with expanding settlement and changing market conditions. The combination of wide variation in emission rates and rapidly changing land use make regional estimation and future prediction of biogenic trace gas emission particularly difficult. This study estimates contemporary, historical, and future N2O and NO emissions from 0.5 million ha of northeastern Costa Rica, a well-documented region in the wet tropics undergoing rapid agricultural development. Estimates were derived by linking spatially distributed environmental data with an ecosystem simulation model in an ensemble estimation approach that incorporates the variance and covariance of spatially distributed driving variables. Results include measures of variance for regional emissions. The formation and aging of pastures from forest provided most of the past temporal change in N2O and NO flux in this region; future changes will be controlled by the degree of nitrogen fertilizer application and extent of intensively managed croplands.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Historical and future land use effects on N2O and NO emissions using an ensemble modeling approach: Costa Rica's Caribbean lowlands as an example
Series title Global Biogeochemical Cycles
DOI 10.1029/2001GB001437
Volume 16
Issue 4
Year Published 2002
Language English
Publisher American Geophysical Union
Contributing office(s) Earth Resources Observation and Science (EROS) Center
Description 18 p.
First page 1
Last page 18
Online Only (Y/N) N
Additional Online Files (Y/N) N