This paper reviews the predictions and management implications of two current paradigms in the ecology and management of arid and semi-arid rangelands. The equilibrium model stresses the importance of biotic feedbacks such as density-dependent regulation of livestock populations and the feedback of livestock density on vegetation composition, cover and productivity. Range management under this ...

this study is trying to exploitations view point and permanent management problems of rangeland to evaluate in ranches damavand summer rangeland in amol county. statistical society are utilizations 15 ranch that with three methods, collective property, private property and council property from rangeland utilization and randomly from among their number 88 was selected. the research tool was a q...

Estimation of Soil Erosion using Artificial Neural Network (ANN) and Geographic Information System (GIS) on the Rangeland Hillslopes

Ecosystem Services Valuation of Rig-Ishaqabad Rangeland in Iran: The Provisioning and Regulating Vegetation Types

QuickBird satellite imagery was evaluated for differentiating among rangeland cover types on the Welder Wildlife Refuge in south Texas. The satellite imagery had a spatial resolution of 2.8 m and contained 11-bit data. Four subsets of the satellite image were extracted and used as study sites. Field spectral measurements made among the dominant vegetation types showed significant differences in...

To reduce dependence on foreign oil reserves, there has been a push in North America to develop alternative domestic energy resources. Relatively undeveloped renewable energy resources include biofuels and wind and solar energy, many of which occur predominantly on rangelands. Rangelands are also key areas for natural gas development from shales and tight sand formations. Accordingly, policies ...

A long standing question in range management concerns the relative importance of the stocking rate versus the length of time during which animals graze a particular rangeland. We address this question by analyzing the problem faced by a private rancher who wishes to minimize the long run expected net unit cost from range operations by choosing either the stocking rate or the length of time duri...

Comparison of Vegetation Characteristics under Three Management Treatments (Heavy Grazing, Exclusure and with Restoration Practices) in Kiasar Chardange Rangeland Sari