Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Doctorat → États-Unis → 2002 → Grass, graziers and tenure : A case study on the Shasta-Trinity National Forest

University of California, Berkeley (2002)

Grass, graziers and tenure : A case study on the Shasta-Trinity National Forest

Forero, Larry Charles

Titre : Grass, graziers and tenure : A case study on the Shasta-Trinity National Forest

Auteur : Forero, Larry Charles

Université de soutenance : University of California, Berkeley

Grade : Doctor of Philosophy (PhD) 2002

Résumé
To consider ecosystem-level impacts of policy change it is necessary to understand the linkages between private ranch land and public land management and policy decisions. This dissertation examines how ranchers and ranch lands have been affected by access, vegetation, and use changes on the Shasta-Trinity National Forest. Archival records and interviews with former and current forest grazing permit holders were used to document the changes and assess their impacts.
Historic Forest Service (USFS) records show a steady decline in grazing on the Forest resulting from changes in available area, shortening the grazing season, vegetation change, and reductions in stocking rate as management emphasis has shifted away from livestock production. Livestock grazing is now less than 10% of what it was at its peak in 1920.
Comparison of allotment maps throughout the management tenure of the Shasta-Trinity National Forest document acreage allocated to grazing was significantly reduced in 1964 partly because of the construction of Trinity Dam. Comparison of historic Grazing Atlases with the 1995 Shasta-Trinity Forest Plan reveal how vegetation management polices like fire suppression, timber management, and livestock grazing, have changed the forage base. Interviewees say that woody vegetation has become denser and lands suitable for grazing rarer, an observation supported for significant parts of the Forest by the broad-scale map comparison. Examining individual allotments, suitable range and stocking rate have declined severely. Canopy closure, and loss of forage supply, has been a significant factor.
A standardized interview instrument was developed, pre-tested and administered to 15 current and 12 former permittees to ascertain how changes in management, vegetation, and their own financial and personal situations had affected access to and use of that public range.
Interviews revealed that ranchers who lost or relinquished their permits generally saw their ranches become smaller. Ranches with permits retained more land and livestock than those who gave up permits. If these findings can be generalized across the west, US Forest Service grazing permits are an important factor in keeping the private land side of ranching operations int

Mots Clés : Range management ; Public administration ; Agricultural economics ; Forests ; Public property ; Environmental impact ; Studies

Présentation

Page publiée le 30 décembre 2014, mise à jour le 8 janvier 2017