THE EFFECT OF PRECIPITATIONFLUCTUATIONS ON CANOPY COVER AND RANGE FORAGE PRODUCTION IN YAZD SEMI-STEPPE RANGELANDS (KHUD AREA 1378-1386)

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ABDOLLAHI J.; ARZANI H.; SAVAGHEBI M.H.; AZIMI M.S.; NADERI H.

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Journal: IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH Year:2012 | Volume:19 | Issue:1 (46) Page(s): 45-59

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Title

THE EFFECT OF PRECIPITATIONFLUCTUATIONS ON CANOPY COVER AND RANGE FORAGE PRODUCTION IN YAZD SEMI-STEPPE RANGELANDS (KHUD AREA 1378-1386)

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Keywords

PRECIPITATION FLUCTUATIONSQ2

CANOPY COVERQ2

FORAGE PRODUCTIONQ2

SEMI-STEPPE RANGELANDSQ2

YAZD PROVINCEQ2

Abstract

Our country’s rangelands are mainly located in arid and semi-arid regions. Due to the low amount of precipitation and high rate of evapotranspiration, water stress is considered as the most crucial environmental stress for vegetation in this region. This study was conducted at Khud-e-sofla rangelands for nine years (1378-1386) to investigate the effect of precipitation fluctuation on CANOPY COVER and production of important plant species. For this purpose, four dominant species were selected and their CANOPY COVER and production were monitored every year in permanent and random plots, respectively. Precipitation data were collected from the nearest synoptic station. According to the data of precipitation, cumulative rain amount was calculated at various periods. The relationship between variables of plant parameters and cumulative rain amount was analyzed by step wise regression method in SPSS 13. The results showed that plant species often reacted to the PRECIPITATION FLUCTUATIONS. However, various species reacted differently to the precipitation fluctuation in terms of cover and production. The total vegetation cover as well as CANOPY COVER of Artemisia aucheri hada negative and significant correlation with winter precipitation.Whereas, precipitation of January to April and the past year precipitation exhibited a high correlation with CANOPY COVER of Iris songarica and Stipa barbata. The FORAGE PRODUCTION was also influenced by seasonal precipitation. According to the results, total yeild and the yield of Artemisia aucheri, Lactuca orientalis, Stipa barbata could be estimated by precipitation data While, estimation of FORAGE PRODUCTION through the precipitation data was not enough accurate for Iris songarica.

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APA: Copy

ABDOLLAHI, J., ARZANI, H., SAVAGHEBI, M.H., AZIMI, M.S., & NADERI, H.. (2012). THE EFFECT OF PRECIPITATIONFLUCTUATIONS ON CANOPY COVER AND RANGE FORAGE PRODUCTION IN YAZD SEMI-STEPPE RANGELANDS (KHUD AREA 1378-1386). IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH, 19(1 (46)), 45-59. SID. https://sid.ir/paper/107380/en

Vancouver: Copy

ABDOLLAHI J., ARZANI H., SAVAGHEBI M.H., AZIMI M.S., NADERI H.. THE EFFECT OF PRECIPITATIONFLUCTUATIONS ON CANOPY COVER AND RANGE FORAGE PRODUCTION IN YAZD SEMI-STEPPE RANGELANDS (KHUD AREA 1378-1386). IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH[Internet]. 2012;19(1 (46)):45-59. Available from: https://sid.ir/paper/107380/en

IEEE: Copy

J. ABDOLLAHI, H. ARZANI, M.H. SAVAGHEBI, M.S. AZIMI, and H. NADERI, “THE EFFECT OF PRECIPITATIONFLUCTUATIONS ON CANOPY COVER AND RANGE FORAGE PRODUCTION IN YAZD SEMI-STEPPE RANGELANDS (KHUD AREA 1378-1386),” IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH, vol. 19, no. 1 (46), pp. 45–59, 2012, [Online]. Available: https://sid.ir/paper/107380/en

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