Grazing can alter plant species interactions in natural rangelands, which turn might influence the productivity of ecosystem but we do not fully understand how spatial variability diversity-biomass relationships are modulated by grazing intensity. Here, hypothesized that co-occurrence rangelands is mainly driven niche segregation due to and heterogeneity local resources, grazing, therefore, mod...

Article history: Received 14 November 2005 Received in revised form 24 April 2006 Accepted 26 May 2006 Available online 31 July 2006 Classic rangeland theory advocates stocking rangelands at relatively lowand constant levels. This theory has been labelled inappropriate for savanna rangelands, because savannas are strongly influenced by stochastic processes. Opportunistic strategies that force a...

One of the effective ways for reducing atmospheric CO2 is carbon sequestration by plants and soils. Rangelands with an expanded area have a great potential for Carbon (C) Stocks. In this study, C stocks in three treatments including natural rangelands (NR), Pit- seeding by Agropyrum elongatum (PS) and abandoned dry farming (ADF) were examined in Kardeh basin Mashhad, Iran in 2013. In each treat...

Dr. Mohamad Reza Moghadam, professor of range management Department, Tehran University has been one of the most important and influential person on science of range management in Iran. He was born in Tabriz city on May 5th, 1940 and graduated in range management from Montpellier University, French in October 1963. Most of the mangers, scientists and professors were taught by him. He recieved lo...

natural resources have been attracted a great deal of attentions and have been frequently exploited for many years. dust is one of natural disasters mainly in recent years; here, in south west of iran, it had destroyed the rangelands. the dust has detrimental effects on the rangelands, livestock and livestock production. high concentrations of dust may lead to the coughing, nasal discharge, whe...

Arid and semi-arid lands constitute a large proportion of available agricultural and rangeland in the world. These lands are characterised by low and unreliable rainfall, low land productivity, and low socioeconomic status of the inhabitants. Livestock plays a very significant role in their economies. Leguminous trees and shrubs, which dominate the natural rangelands, are often higher in crude ...