STIMATING OF FORAGE PRODUCTION USING CLIMATIC INDICIES (RAINFALL, TEMPERATURE AND WIND VELOCITY) A CASE STUDY: STEPPE RANGELAND, YAZD PISH-KOOH AREA

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ABDOLLAHI J.; ARZANI H.; NADERI H.

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Journal Paper

Paper Information

Journal: IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH Year:2013 | Volume:20 | Issue:2 (51) Page(s): 240-249

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Information Journal Paper

Title

STIMATING OF FORAGE PRODUCTION USING CLIMATIC INDICIES (RAINFALL, TEMPERATURE AND WIND VELOCITY) A CASE STUDY: STEPPE RANGELAND, YAZD PISH-KOOH AREA

Author(s)

ABDOLLAHI J. | ARZANI H. | NADERI H. | Issue Writer Certificate

Keywords

FORAGE PRODUCTIONQ2

CLIMATIC VARIABLESQ2

STEPPE RANGELANDSQ2

PISH-KOOHQ2

YAZD PROVINCEQ2

Abstract

Knowledge on changes of the factors affecting range FORAGE PRODUCTION is the main prerequisite for understanding the processes and optimal management of rangelands. In this research, the effects of precipitation variables, temperature and wind velocity were studied on annual FORAGE PRODUCTION of some dominant range species, in Sadr-Abad steppe rangeland of PISH-KOOH region, YAZD PROVINCE, during 9 years. Canopy cover percentage and FORAGE PRODUCTION were measured in randomly located plots along fixed transects, annually. Climatic data were collected from the nearest synoptic station. Relationship between production values and CLIMATIC VARIABLES were analyzed by correlation coefficients and stepwise regression. Results showed that, among studied CLIMATIC VARIABLES, December-March precipitation, December-April precipitation and April precipitation had the most effects on annual production of Artemisia sieberi, Iris songarica, Stipa barbata and Stipa Arabica, species respectively. While, annual production of Stachys inflata was affected, mostly, by July mean temperature and December-March precipitation. Annual production of Iris songarica and Stipa barbata affected by wind velocity in April, as well as precipitation. Results indicated that December-March precipitation could be a proper indicator to predict total range FORAGE PRODUCTION.

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