Effect of terrain condition and management on the amount and quality of Coarse Woody debris (CWD) in northern forests of Iran

Aghayari, Farshid (2017) Effect of terrain condition and management on the amount and quality of Coarse Woody debris (CWD) in northern forests of Iran. Masters thesis, university of Mohaghegh Ardabili.

Preview

Text (تأثیر شرایط زمینی و مدیریت بر میزان و کیفیت پسماندهای چوبی درشت در جنگل‌های شمال ایران) Farshid Aghayari.pdf Download (541kB) | Preview

Abstract

Large woody debris are found at the most of the forest ecosystems. These woody debris provide commercial uses and living opportunities for organisms. Therefore, its existence reduces species extinction in the forest ecosystem. The aim of this research was to study the effects of three slope classes including low slope (0 to 20%), moderate (20 to 40%) and high slope (>40%) and management regimes on the amount and density of woody debris. Data were collected using linear sampling method on lines with a length of 100 meters and a network of 200×200 meters. The measured variables at the different slope classes were compared using the analysis of variance (ANOVA) to determine which of the treatments were statistically significant. The results showed that with increasing slope, the amount and density of large woody debris increased. The average large woody debris in low, moderate and high slopes was 2.82, 3.15, and 6.79 cubic meters per hectare, respectively. Also, the average density of large woody debris on low, medium and high slopes was 985.32, 784.38 and 1955 cubic meters per hectare, respectively. The amount and density of large woody debris in the managed forests was more than these in the unmanaged forests. Also, the Regression analysis results proved the slop is significantly effect on the density and Volume of CWD (Y= 1/46 + 1/05 X R^2 =18%) (Y=0/105 + 1/89X R^2=31%) (Y=1/527 + 0/730X R^2=26%).The Results of present study can show quantitative condition of similar Areas With similarity in slope and management approach .Absolutely knowledge about CWD.amounts will help to forest planners and forest decision makers

Actions (login required)

View Item