Evaluation of different sampling method to study of Diameter at Breath Height in the Zagros forest
Publish place: International journal of Advanced Biological and Biomedical Research، Vol: 1، Issue: 2
Publish Year: 1392
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJABBR-1-2_002
تاریخ نمایه سازی: 26 اسفند 1394
Abstract:
For maintaining of Zagros forests role in wild life, water and soil conservation, the suitable solutions and methods for assessing the existing conditions and planning for management of this forests should be given. To detection of suitable sampling method to study tree Diameter at Breath Height in the northern Zagros forest, Blake forest, in Baneeh region, Kurdistan province, and west of Iran was selected. 40 square sample plots one hectare (100×100 m)were selected and perfect inventoried. In every sample plot the position of tree, kind of species and Diameter at Breath Height (DBH) were recorded. In order to study of tree density (tree/ha) different sampling methods (rectangular sample with 20×50 m and 10×50, randomsampling method with 40, 50 and 60 circle sample plots which everyone was 1000 m2) compered the prefect inventory. To determination of suitable sampling for study of tree Diameter at Breath Height (DBH) used the %E2 ×T indexes. To compere the Diameter at Breath Height (DBH) in the every sampling methods and perfect inventory used the t-testanalysis. Data analyzing was done by SPSS16 software’s. Results showed that the rectangular sample with 20×50 m sample methods was the best methods and have maximum of accuracy. Overall results showed that the rectangular sample with 20×50 m sampling methods was (have minimum of time and %E2×T criteria) the suitable methods to study of density(tree/ha). Authors suggested to study of tree density (tree/ha) in the northern zagros forest used the rectangular sample with 20×50 m sampling methods.
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Authors
Maziar Haidari
Ph.D. student of forestry, Department of forestry, Sari University of Agricultural Sciences and Natural Resources, sari, Iran
Nabiollah Yarali
Assistant professor of forestry, Faculty of Natural Resources, University of Shahrekord,Shahrekord, Iran
Naghi Shabanian
Assistant professor of forestry, Faculty of Natural Resources, University of Kurdistan,Sanandaj, Iran