Research Institute of Forestes and Rangelands Iranian Journal of Range and Desert Research 1735-0875 20 1 2013 05 22 Estimating the production of Artemisia siberi through the measurement of plant’s dimensions (Case study: southwest Sabzevar) Estimating the production of Artemisia siberi through the measurement of plant’s dimensions (Case study: southwest Sabzevar) 1 10 2976 10.22092/ijrdr.2013.2976 FA Yaser Ghasemi Aryan Ph.D. Student of Combat Desertification, Faculty of Natural Resources, University of Tehran, Karaj, Iran Hossein Arzani Professor, Faculty of Natural Resources, University of Tehran, Karaj, Iran Esmaiel Filekesh Senior Research Expert, Research center for Agriculture & Natural Resources, Sabzevar, Iran Reza Yari Ph.D. Student of Range Management, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran Journal Article 2010 08 11 Determination of grazing capacity is considered as one of the most fundamental aspects of range management and understanding the effective factors on it is of utmost importance. Since the amount of forage production in a growth period is the basis for calculation of grazing capacity, in this research the estimation of production through the measurement of plant’s dimensions was investigated. For this purpose, the habitat <em>of Artemisia siberi</em> was determined and then 8 transects of 50 m length were established with 10 m intervals by random-systematic method. The height and diameter of 40 species of <em>Artemisia siberi</em> with different dimensions were recorded and the production of each species was clipped and weighted after drying. All data were analyzed by SPSS. Results showed that there was a significant linear correlation between production as a dependent variable and volume, canopy cover and height of<em> Artemisia siberi</em> as independent variables (R2= 0.88, 0.84, and 0.74, respectively) at 1% probability level. Finally, the relationship between production and volume was identified as the best linear relationship. Determination of grazing capacity is considered as one of the most fundamental aspects of range management and understanding the effective factors on it is of utmost importance. Since the amount of forage production in a growth period is the basis for calculation of grazing capacity, in this research the estimation of production through the measurement of plant’s dimensions was investigated. For this purpose, the habitat <em>of Artemisia siberi</em> was determined and then 8 transects of 50 m length were established with 10 m intervals by random-systematic method. The height and diameter of 40 species of <em>Artemisia siberi</em> with different dimensions were recorded and the production of each species was clipped and weighted after drying. All data were analyzed by SPSS. Results showed that there was a significant linear correlation between production as a dependent variable and volume, canopy cover and height of<em> Artemisia siberi</em> as independent variables (R2= 0.88, 0.84, and 0.74, respectively) at 1% probability level. Finally, the relationship between production and volume was identified as the best linear relationship. https://ijrdr.areeo.ac.ir/article_2976_d2aefc580fb441e2466ecd7f51c0a0c6.pdf