Rangelands of the Qinghai-Tibetan plateau (QTP), although sparsely populated and contributing little to China’s overall economy, play an important environmental role throughout Asia. They contain high biodiversity values and can also potentially provide China with a source of cultural and geographic variety in the future. Chinese government reports paint a gloomy picture, considering vast porti...

although precipitation is the most important factor which effects rangeland production, but there is little information on the relationship between production and the interactions of climatic factors and specially drought indices. .in this research, the relation between production and climatic factors of rainfall, temperature, evapo- transpiration, and as well as drought indices of standardized...

An Iranian Rangeland ecologist, born in 1937 in Tabriz, He got his MSc. in agriculture in 1961 from Tabriz University. He was hired by Rangeland Improvement and Fodder Procurement Organization in 1963. At the early steps of his career, he worked as the head of Daland Range Seed Production Station in Gorgan, and then he worked as the head of Homand Plant Research Center from 1966. He received hi...

CARMA (CAse-based Range Management Adviser) is a system that integrates case-based reasoning with model-based reasoning for rangeland pest management. CARMA’s predictions of rangeland forage loss by grasshoppers were compared to predictions by 15 expert entomologists using either global or case-specific adaptation weights. Under both conditions, CARMA’s predictions were more accurate than CARMA...

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...

Growing pearl millet and cowpea in combination with raising ruminant livestock is widely practised in the Sahel. In this farming system, livestock feeding depends mostly on rangeland, fallows and cropland grazing. Nutritional constraints to grazing ruminants stem primarily from feed scarcity and seasonal fluctuations in feed supply associated with low rainfall and poor soil fertility. Low feed ...

WILLIAM A. REINERS Department of Botany University of Wyoming PO Box 3165 Laramie, Wyoming 82071-3165, USA ABSTRACT / Carbon sequestration was estimated a northern mixed-grass prairie site and a sagebrush–steppe site in southeastern Wyoming using an approach that integrates remote sensing, CO2 flux measurements, and meteorological data. Net ecosystem exchange (NEE) of CO2 was measured using air...