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

Accueil du site → Projets de développement → Projets de recherche pour le Développement → 2007 → HIERARCHICAL ANALYSIS OF LANDSCAPE PROCESSES RESULTING FROM MULITPLE LAND USE ACTIVITIES IN ARID AND SEMI-ARID ECOSYSTEMS

United States Department of Agriculture (USDA) 2007

HIERARCHICAL ANALYSIS OF LANDSCAPE PROCESSES RESULTING FROM MULITPLE LAND USE ACTIVITIES IN ARID AND SEMI-ARID ECOSYSTEMS

Landscape Arid Semi-Arid

United States Department of Agriculture (USDA) Research, Education & Economics Information System (REEIS)

Titre : HIERARCHICAL ANALYSIS OF LANDSCAPE PROCESSES RESULTING FROM MULITPLE LAND USE ACTIVITIES IN ARID AND SEMI-ARID ECOSYSTEMS

Identification : TEX09175

Pays : Etats Unis

Durée : Jun 25, 2007 à Jun 24, 2012

Domaine : Watershed Protection and Management ; Animal Management Systems ; Conservation and Efficient Use of Water ; Management of Range Resources ; Rangelands and grasslands, general ; Vegetables, general/other ; Wildlife and natural fisheries, general/other ; Beef cattle, general/other

Partenaire : TEXAS A&M UNIVERSITY 750 AGRONOMY RD STE 2701 COLLEGE STATION,TX 77843-0001

Objectifs
To develop geospatial models that provides better understanding of the relationships between vegetation pattern and hydrologic processes at multiple spatial and temporal scales ; to quantify from a spatial perspective the relationship between domestic and wild herbivores and vegetation structure and pattern in brush dominated landscapes ; and to investigate subfield -and field-scale spatial variability of soil characteristics and nutrient dynamics and explore spatial explicit approaches to increase crop productivity and reduce environmental impact in precision agriculture systems.

Descriptif
GIS and remote sensing tools will be used to develop multiple-scale models for brush control and management.Landscape metrics to describe spatial pattern, structure, and connectivity will be used to quantify the amount and spatial distribution of potential water yield and wildlife management areas. Using geospatial technologies, livestock and wildlife species movement and behavior, and interactions will be analyzed to determine habitat use, habitat preference, and home range in semi-arid and arid landscapes ecosystems. Spatial variability in nutrient dynamics at the sub-field and field scale in precision agriculture systems will be analyzed using a variety of geostatistical tools. One of the goals in this area is to understand the multi-scale spatial relationships between soil characteristics and water and nutrients, particularly nitrogen availability, use, and movement at the soil-plant level within a crop field in water restricted areas.

Présentation : USDA

Page publiée le 25 septembre 2015, mise à jour le 5 novembre 2017