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Massachusetts Institute of Technology (1992)

A test of ecological optimality for semiarid vegetation

Salvucci Guido D

Titre : A test of ecological optimality for semiarid vegetation

Auteur : Salvucci Guido D

Université de soutenance : Massachusetts Institute of Technology

Grade : M.S. Thesis 1992

Résumé
Three ecological optimality hypotheses which have utility in parameter reduction and estimation in a climate-soil-vegetation water balance model are reviewed and tested. The first hypothesis involves short term optimization of vegetative canopy density through equilibrium soil moisture maximization. The second hypothesis involves vegetation type selection again through soil moisture maximization, and the third involves soil genesis through plant induced modification of soil hydraulic properties to values which result in a maximum rate of biomass productivity.

Mots clés : ARID LANDS ; BIOMASS ; CANOPIES (VEGETATION) ; DROUGHT ; ECOLOGY ; ENVIRONMENT MODELS ; ESTIMATING ; HYDROLOGY ; MATHEMATICAL MODELS ; OPTIMIZATION ; PRODUCTIVITY ; SOIL MOISTURE ; SOIL SCIENCE ; TRANSPIRATION ; WATER BALANCE

Présentation

Page publiée le 6 novembre 2013, mise à jour le 22 février 2018