نوع مقاله : علمی - پژوهشی
نویسندگان
1 دانشگاه ایلام
2 گروه علوم جنگل، دانشکده کشاورزی، دانشگاه ایلام
3 استادیار گروه آمار و ریاضی، دانشکده علوم پایه، دانشگاه ایلام، ایلام، ایران
4 دانشجوی دکتری جنگلداری، گروه علوم جنگل، دانشکده کشاورزی، دانشگاه ایلام، ایلام، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The objective of present study was to estimate of leaf biomass, leaf carbon sequestration and leaf area index of Cerategus aronia in Sartaf forests of Ilam. For this purpose, 30 trees were selected using random sampling method and height, crown length, large and small crown diameter, mean diameter of crown and area of crown variables were measured. All leaves of 1/4 or 1/8 crown area were collected. After of drying, dry leaves were weighted and calculated. Enough quantity of leaves was burned in electrical kiln to calculate the Carbon storage. The gravimetric method used to calculate the leaf area index. Mean tree method was used to generalize the result to the whole study forest. Based on the results, mean of leaf biomass, mean of leaf carbon sequestration, mean of atmosphere CO2 absorption were 99.18, 46.61 and 170.59 kg per hectare, respectively. The average of leaf area index of hawthorn species in studied area was 9.08 for each tree and 0.095 per hectar. The results of allometric relationships using regression models showed that there is a significant and positive correlation between mean diameter of crown with leaf biomass and leaf area index of hawthorn trees in Ilam forests. In addition, the results showed that the power regression model for both dependent variables of leaf biomass and leaf area index had the highest coefficient of explanation in the independent variable of average crown diameter of hawthorn trees.
کلیدواژهها [English]