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New Mexico State University (1973)

Soil-plant-livestock-weather relationships of a range ecosystem : interactive timeshare regression and simulation model approaches

Russell JW.

Titre : Soil-plant-livestock-weather relationships of a range ecosystem : interactive timeshare regression and simulation model approaches.

Auteur : Russell JW.

Université de soutenance : New Mexico State University

Grade : Master of Science (MS) 1973

Résumé
Data from Pasture Nine, Jornada Experimental Range, New Mexico, were used in regression and simulation modelling approaches to predicting perennial grass growth for use in management. These approaches served to illustrate the capabilities of timeshare computer facilities and APL (A Programming Language). Results of various regressions of the relationships of precipitation, days of soil moisture levels, and yield and cover of perennial grasses were used to heuristically develop a simulation model. Plotting the model output against the actual yields, although not statistically significant, gave promising results. The addition of parameters for evapo-transpiration could result in a valid model.

Mots Clés : grass productivity, model, grazing management

Présentation (Jornada NMSU)

Page publiée le 16 février 2016, mise à jour le 15 décembre 2017