Volume 11, Issue 40 (summer 2007)
jwss 2007, 11(40): 449-464 |
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E. Zandi Esfahan, S. J. Khajedin, M. Jafari, H. Karimizadeh, H. Azarnivand. Relationship between Amount of Growth in Haloxylon ammodendron (C.A. Mey) and Edaphic Characteristics in Segsi Plain of Isfahan. jwss 2007; 11 (40) :449-464
URL: http://jstnar.iut.ac.ir/article-1-718-en.html
URL: http://jstnar.iut.ac.ir/article-1-718-en.html
Abstract: (28925 Views)
In order to determine the reciprocal relationship between the important characteristics of soil and the growth of Haloxylon ammodendron (C.A. Mey) plant in segsi plain of Isfahan., ordination method was used. The study was performed through the stratified random sampling and the regions were separated according to the plant age and physical physiognomy, then 10 samples of Haloxylon ammodendron (C.A. Mey) of the same age were selected in each region. Meanwhile, factors such as height, canopy cover area, canopy cover perimeter, canopy cover diameter, and basal area were considered. Also, 30 profiles from viewpoint of growth situations in 10 different regions were dug. Soil characteristics such as : pH, Ec, total soluble Ca2+ and Mg2+, Cl-, CO3--, HCO3-, SP%, CaCO3%, CaSO4%, organic matter%, total nitrogen percentage, phosphorous, Na+, K+, SAR, and hardpan depth were measured. Data was analyzed using ordination method. According to the results, samples of the same age showed significant differences in plant features. Other results showed that physical characteristics such as depth of hardpan from soil surface, SP%, and chemical characteristics such as salinity, alkalinity and total nitrogen had the highest effect on qualities of this kind of plant. In other words, the results mentioned above showed the important role of Haloxylon ammodendron (C.A. Mey) in sharp increase of salinity and alkanity in it's stratum.
Keywords: Haloxylon ammodendron (C.A.Mey), Plant characterisitics, Soil characteristics, Ordination method, Segsi plain of Isfahan.
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