Sie können Bookmarks mittels Listen verwalten, loggen Sie sich dafür bitte in Ihr SLUB Benutzerkonto ein.
Medientyp:
E-Artikel
Titel:
Ecological optimality in water‐limited natural soil‐vegetation systems: 1. Theory and hypothesis
Beteiligte:
Eagleson, Peter S.
Erschienen:
American Geophysical Union (AGU), 1982
Erschienen in:Water Resources Research
Sprache:
Englisch
DOI:
10.1029/wr018i002p00325
ISSN:
0043-1397;
1944-7973
Entstehung:
Anmerkungen:
Beschreibung:
<jats:p>The solution space of an approximate statistical‐dynamic model of the average annual water balance is explored with respect to the hydrologic parameters of both soil and vegetation. Within the accuracy of this model it is shown that water‐limited natural vegetation systems are in stable equilibrium with their climatic and pedologic environments when the canopy density and species act to minimize average water demand stress. Theory shows a climatic limit to this equilibrium above which it is hypothesized that ecological pressure is toward maximization of biomass productivity. It is further hypothesized that natural soil‐vegetation systems will develop gradually and synergistically, through vegetation‐induced changes in soil structure, toward a set of hydraulic soil properties for which the minimum stress canopy density of a given species is maximum in a given climate. Using these hypotheses, only the soil effective porosity need be known to determine the optimum soil and vegetation parameters in a given climate.</jats:p>