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

Accueil du site → Master → Chili → Estimación de la capacidad carga de los tipos vegetacionales con aptitud pastoral destinados al manejo de vicuña (Vicugna vicugna Mol.), en el altiplano de la provincia de Parinacota, Región de Arica y Parinacota

Universidad de Chile (2010)

Estimación de la capacidad carga de los tipos vegetacionales con aptitud pastoral destinados al manejo de vicuña (Vicugna vicugna Mol.), en el altiplano de la provincia de Parinacota, Región de Arica y Parinacota

Fredericksen Neira, Nora Virginia

Titre : Estimación de la capacidad carga de los tipos vegetacionales con aptitud pastoral destinados al manejo de vicuña (Vicugna vicugna Mol.), en el altiplano de la provincia de Parinacota, Región de Arica y Parinacota

Auteur : Fredericksen Neira, Nora Virginia

Université de soutenance : Universidad de Chile

Grade : Ingeniero en Recursos Naturales Renovables 2010

Résumé
The aim of this study was to estimate the annual carrying capacity (CC) of highlands ranges for vicuna, in Parinacota Province. The used methodology is based in the relationship between the rangelands energy production and vicuna annual energy requirements, and it was derived from the rangeland botanical composition ; the annual dry matter (MS) production, estimated as a function of climatological variables and potential production ; the energetic values of rangelands species ; the vicuna feeding preferences and energy requirements ; and the rangelands condition. This was developed within the framework of a geographic information system (SIG), in a 90 m resolution. The results showed higher values of annual MS production for wetlands (also called bofedales) with a maximum of 2.410 kg ha-1, and values generally below 600 kg ha-1 for dryland ranges. The CC got a maximum value of 1,45 vicuna units (UV) ha-1 year-1 for bofedales, and values generally below 0,1 UV ha-1 year-1 for dryland ranges. The study shows the key role of bofedales in the vicuna management and an apparent rangeland overuse when the whole CC of the study area is considered. The estimated CC is referential ; more investigation is necessary to validate at least part of the used methodology.

Présentation

Version intégrale (4,13 Mb)

Page publiée le 23 février 2016, mise à jour le 12 juin 2018