Investigation of the effect of physiographic factors on the quantitative and qualitative condition of Zagros forests in Sarpol-e Zahab region of Kermanshah

Subject Areas : forest

Azadeh Sohrabi Zadeh ^{1 *} , rezahossein hheidary ² , Maziar Heidri ³

1 - *1Department of Forestry, University of Razi, Kermanshah, Iran
2 - Campus of Agriculture and Natural Resources, Razi University, Kermanshah, Iran.
3 - Research Department of Natural Resources, Kurdistan Agricultural and Natural Resources Research and Education Center, AREEO, Sanandaj, Iran

Received: 2022-03-09 Accepted : 2022-06-10 Published : 2022-06-21

Keywords: Canopy, Central Zagros forests, Sarpol Zahab, Quantitatively and qualitatively, Mistletoe, Dying,

Abstract :

The aim of this research Check the effect of physiographic (Altitude and direction) on The quantitative and qualitative characteristics, Determine the amount of dieback and determine the age structure is part of the central Zagros forests. For this research  the forest between city of Sarpol Zohab and Krnd Ghrb was selected, The area of sea level height into three height classes 700 to 1000 m, 1000 m to 1300 m and 1300 to 1500 m, and two main geographical aspects North and South was divided. 96 circular plots of 10 AR in regular-random sampling method with dimensions of 100 x 100 m was picked . The results showed that the highest average value characteristics basal area and cover percent in elevation in the classes of 1300 to 1500 meters above sea level and northern slopes were observed and analysis of variance and t-test results showed between the little tree factors of altitude and aspect there is a significant difference. The population has  Young uneven structure and trees located on the northern slopes and Classifieds height of 700 to 1000 m in larger diameter classes more distributed. trees with serious dehydration, In the southern slopes and a height classified of 700 to 1000 meters above sea level was observed. trees with severe pollution to semi-parasitic mistletoe plant on the northern slopes and a height Classifieds of 700 to 1000 meters above sea level was observed. On results of qualitative and quantitative characteristics of trees, for sustainable management of forests for research and reducing operations it is suggested, the southern slopes height classifieds of 700 to 1,000 meters and taken into consideration.