4th year 1st Semester Examination, Session-2002-2003
Title - Forest Management
Course No. FOR-412,
Credit: 4, Total Marks-70, Time3 hours
Dept. of Forestry and Environmental Science,
Shah Jalal University of Science And Technology, Sylhet, Bangladesh
1. Marks for respective question are shown at the end of each question.
2. All questions are equal marks except question number 1
3. Question no. 1 of each section is compulsory. Answer other two (2)questions from the rest three (3) for each section.
4. Answer should be written in separate answer script for each section.
Section – B
1. Write short note on any one of the following :( 5x1=5)
a) Soil expectation value,
b) Continuous Forest Inventory (CFI).
2. a) What is sustained yield? Write the different models of sustained yield.
b) What are the disadvantages of sustained yield?
c) Describe yield regulation based on reduced area coups.
3. a) What are yield and yield regulation?
b) What are the advantages and disadvantages of yield regulation based on area?
c) Give your opinion. Suppose a 150 years rotation of Garjan plantation has an area of 20 ha. Ages corresponding to 20cm, 30cm and 40cm dbh are 40, 75 and 120 years respectively. Total growing stock in different dbh classes are as follows:
| Diameter class(cm) | Growing stock(m³) |
| 10-20 | 63,000* |
| 20-30 | 50,731 |
| 30-40 | 72,309 |
| 40-50 | 89,670 |
| 50-60 | 62,955 |
| 60-70 | 32,024 |
| 70 and above | 19,808 |
*Note vol (m³)in 10-20 dia class estimated.
Calculate annual yield by Von Mante’s, Howards Simmons and Smythies formula/modification. Which formula/modification gives conservatives yields?
4. a) What is forest management plan/ Discuss the roles of working plan in forest management.
b) What do you mean by RIMS?
c) Multiple production. Forestry is the best method for assessing the value of standing tree?
