Investigating the Relationship between Topographic Factors and Characteristics of Gall Oak (Quercus infectoria Oliv) with Fine Root Biomass and Nutrient Content (Case Study: Shineh, Lorestan)

Moradi , Sajad; Abrari Vajari, Kambiz; Pilehvar, Babak

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Volume 10, Issue 21 (12-2022)

PEC 2022, 10(21): 45-56

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Investigating the Relationship between Topographic Factors and Characteristics of Gall Oak (Quercus infectoria Oliv) with Fine Root Biomass and Nutrient Content (Case Study: Shineh, Lorestan)

Sajad Moradi¹

, Kambiz Abrari Vajari ^*

, Babak Pilehvar³

1- Faculty of Agriculture and Natural Resources, Lorestan University, Khorramabad
Forestry Department, Faculty of Agriculture and Natural Resources, Lorestan University, Khorramabad, Forestry Department, Faculty of Agriculture and Natural Resources, Lorestan University, Khorramabad , kambiz.abrari2003@yahoo.com
3- Forestry Department, Faculty of Agriculture and Natural Resources, Lorestan University, Khorramabad

Abstract: (1160 Views)

This research aims to investigate the impact of topographic factors and tree characteristics on fine root biomass and nutrient content of gall oak (Quercus infectoria Oliv.) in the Shineh region of Lorestan province, Iran. Using a random and regular sampling method, the diameter at breast height, crown diameter, height/DBH ratio, and NPK concentration of trees were measured on a 100x100 meter statistical network at two altitude classes. Fine root biomass was also measured in three directions: depth of 0-30 cm, slope of 15-60%, and altitude of 1300-1500 meters above sea level. The results revealed that the depth and direction of roots significantly affected their biomass, with the greatest biomass at a depth of 15-30 cm and in the east direction. Above sea level did not have a significant effect on root biomass, while a slope of 46-60% showed the highest biomass. Moreover, tree characteristics such as crown diameter, height coefficient, and NPK content had a significant effect on root biomass, while DBH and tree height did not. Nitrogen had the highest positive correlation with the amount of fine root biomass, while potassium had the least negative correlation. Understanding the characteristics of trees according to the state of forest stands can be effective in their protection and restoration, particularly in treatment operations.

Article number: 4

Keywords: Nutrient Content, Oak Forest, Tree Crown, Tree Diameter

Full-Text [PDF 573 kb] (247 Downloads)

Type of Study: Research | Subject: Special
Received: 2022/04/29 | Accepted: 2022/10/18 | Published: 2023/04/22

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Moradi S, Abrari Vajari K, Pilehvar B. Investigating the Relationship between Topographic Factors and Characteristics of Gall Oak (Quercus infectoria Oliv) with Fine Root Biomass and Nutrient Content (Case Study: Shineh, Lorestan). PEC 2022; 10 (21) : 4
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