An empirical model for estimating CO2 exchange of Bouteloua gracilis (H.B.K.) Lag. in the shortgrass prairie.

Abstract:

:An empirical model for predicting net photosynthesis (P N ) and dark respiration (R D ) in the field was developed and tested for Bouteloua gracilis (H.B.K.) Lag., the dominant C4 grass of the North American shortgrass prairie. P N is predicted as a function of soil water potential, canopy air temperature, irradiance, and plant age, while R D is expressed as a function of soil water potential and temperature. The model accounted for 85% of the variability in the data base used to estimate parameter values. Results of a validation test showed good agreement between observed and predicted P N rates, suggesting this approach would be useful as a submodel of a grassland ecosystem model.

journal_name

Oecologia

journal_title

Oecologia

authors

Detling JK,Parton WJ,Hunt HW

doi

10.1007/BF00344844

subject

Has Abstract

pub_date

1978-01-01 00:00:00

pages

137-147

issue

2

eissn

0029-8549

issn

1432-1939

pii

10.1007/BF00344844

journal_volume

33

pub_type

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