Study on gender ratio in the juniper stands (Juniperus excelsa) of Layzangan Darab, Fars province

Document Type : Scientific Letters

Authors

1 Assistant Prof, Natural Resources Department, Fars Agricultural and Natural Resources Research and Education Center, AREEO, Shiraz, Fars, Iran.

2 Assistant Prof, Natural Resources Department, Fars Agricultural and Natural Resources Research and Education Center, AREEO, Shiraz, Fars, Iran

3 Expert, General Office of Natural Resources and Watershed Management in Fars Province, Shiraz, Iran

4 Research expert, Natural Resources Department, Fars Agricultural and Natural Resources Research and Education Center, AREEO, Shiraz, Iran

Abstract

The study on gender ratio and forest stand characteristics is the most important issue in forest ecology. With respect to forest degradation in natural stands of juniper, as one of the most important forest ecosystems, the study on their characteristics is essential. In the current research, some characteristics and gender ratio of juniper stands in the Layzangan site of Fars province were studied. One of the best sites was selected and then 12 circular plots with 1000 m2 area according to a cluster design were set in both the northern and southern slopes of the study habitat. Some characteristics such as the type of species, collar diameter, height, canopy area, and gender ratio were recorded at all plots. The result indicated that the number of trees per hectare in northern slope was 85 tree individuals, while it was 58 for the southern slope, and the basal area per hectare varied between 1 to 3.4 m2. Not only the male to female ratio of both slopes had a deviation from the 1:1 ratio, but the ratio for the both slopes was different from each other.

Keywords

References

-Ahmed, M., Shaukat, S.S. and Buzdar, A.H., 1990. Population structure and dynamics of Juniperus excelsa in Balouchistan. Journal of Vegetation Science, 1(2): 271-276.
-Kang, H.  and Shin, S., 2012 .Sex ratios and spatial structure of the dioecious tree Torreya nucifera in JejuIsland, Korea. Journal of Ecology and Field Biology, 35(2):111-122.
-Montesinos D., Villar-Salvador, P., García-Fayos, P. and Verdú, M., 2011. Genders in Juniperus thurifera have different functional responses to variations in nutrient availability. New Phytologistdoi, 93(3):705-12
-Ortiz, P.L., Arista, M. and Talavera, S. 2001. Sex ratio and reproductive effort in dioecous Juniperus communis subsp. alpina (Suter) Celak along and altitudinal gradient. Annals of Botany, 89: 205-211
-Quinn, J.A. and Meiners, S., 2004. Growth rates, survivorship, and sex ratios of Juniperus virginiana on the New Jersey Piedmont from 1963 to 2000. Journal of the Torrey Botanical Society, 131(3):187-194.
-Sarangzai, A. M., 2000. Population structure and natural regeneration potential of juniperus excelsa (M.BIBE) in northern balochistan Pakistan, Ph.D. Thesis.university of Balochistan Quetta, 211 p.
-Sarangzai, A. M., Ahmed, M., Ahmed, A., Tareen, L. and Umer Jan, S., 2012. The ecology and dynamics of Juniperus excelsa forest in Balochestan-Pakistan. Pakistan Journal of Botany, 44(5): 1617-1625.
 
Iran Nature
Volume 5, Issue 2 - Serial Number 21
May and June 2020
Pages 69-77

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