Paper Information

Journal:   PAJOUHESH-VA-SAZANDEGI   SUMMER 2007 , Volume 20 , Number 2 (75 IN NATURAL RESOURCES); Page(s) 103 To 107.
 
Paper: 

INVESTIGATION OF RELATIONSHIP BETWEEN ANNUAL PRECIPITATION AND YIELD IN STEPPIC RANGE OF POOSHT-KOOH REGION OF YAZD PROVINCE

 
 
Author(s):  BAGHESTANI MEYBODI N., ZARE M.T.
 
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Abstract: 

Assessment of annual for age yield in order to determining of grazing capacity is necessary in range management. It is easy to obtain with determine of relation between yield and climatic factors in field. For this purpose annual yield forage of indicator, accompanying and total species of Nir range research station for pattern of steppic range of Yazd province were determined with clipping and weighting method during 2000-2004. Precipitation was measured by cumulative rain gauge. According to data of precipitation, amount of cumulative rain determined at October, November, autumn, Spring and annual. Forage yield quantities of every species and amount of rain were defined dependent and independent variables respectively Relationships between variables analyzed by regression programs in SPSS 10. Results showed that yield of perennial plants were not related to precipitation of summer and autumn, and omitted in models. Effects of October, November and spring precipitation had different responses on forage production. According to this study, annual yield of some species, yield of total perennial plants and annuals production can be estimated by precipitation data, But had not enough accurate for species of Noaea mucronata, Salsola rigida and Launaea acanthodes.

 
Keyword(s): RAINFALL, FORAGE PRODUCTION, RANGE PLANTS, STEPP, MULTIPLE LINEAR REGRESSIONS, YAZD
 
References: 
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