N9 002269
IB-JGT·K·GPBI

FORESTRY

Paper II
ITime Allowed .. Three Hours IIMaximuln Marks .. 2001
INSTRUCTIONS
Candidates should attempt questions 1 and 5
which are compulsory, and any 'fHREE of the

remaining questions, selecting at least ONE
question from Section.
All questions carry equal marks.

Marks allotted to parts ofa question are
indicated against each.
Answers must be written in ENGLISH only.

SECTION A
1. .Ans(a) wer any five parts from the followiNG
Discuss the significance of normality in sustained management of forest 8into5=40
What are the different regeneration categories that are observed and recorded during sal regeneration survey?

How is De Liocourt's principle utilised to ensure normality concept in selection forest?

How do variation in density and quality of a forest influence annual yield estimation?

How are yield table data used for assessment of normal growing stock?
Describe methods of using prismatic compass in forest surveys.
2.(a)Comment on the comparative significance of calliper and tape for d.b.h. 'measurement. 8
What is working circle How is it decided working plan exercise 8
(c)Write down the methods .for laying out sample plots for periodic recording of growth data. 8
Briefly discuss the relative importance of physical and silvicultural rotations in respect of existing forest resources of India, 8
Distinguish between Irish bridge, suspension bridge and cantilever bridge. 8
3. What are the pictorial elements used for interpretation of aerial photographs? 10
Describe the for allotting different types of periodic blocks in a forest. 10
Explain the principle and usc of Abney's LeveL 10
Explain the components of compartment description. 10
How iS the soil expectation value helpful for deciding financial rotation? 10
How does the flying height influence the scale of
aerial photographs in hilly areas? 10
Writc principle of Christen hypsometer and its
use. 10
What is intermediate yield? How docs it differ from final yield 10


SECTION B

5. Answer any five parts from the following 8x5=40
What are the keys to identify timbers for construction purpose

List five each of the important resident and birds noticed in Indian fo.rests.

Name five important tree species used for axle and wheels of different carts. In which regions ·of the country is this sort of transportation more prevalent? State the reasons.

List merits of Bentham and Hooker systenl of plant classification used in Dendrology.

Illustrate the succession of mangrove vegetation in sea coast.

(f) What arc areas How are these detected? What precautionary measures need to be taken to overcome this problem?
6. What .morphological, anatomical and physiological features are suited in xerophytic plants? 10
How is damage due to teak defoliator and stem borer managed in the plantations? 10

What are Jive fences Name five plant species most commonly used as live fences. How do these differ from other types of fences? 10


B-JGT-K-GPB 3 [Contd.]
(d)How is Forest Certification done in developed countries Comment on its present status in India. 10
7. How are· ectomycorrhizal fungi beneficial In managing soil borne diseases of forest nurseries? Give examples. 10
What are the different types of water soluble
wood preservatives? 10
How and why should cold desert forest ecosystem be conserved? 10
(d)What are the functions of "Indian Board for Wildlife" with regard to conservation of wildlife? 10
Write causal pathogens of important diseases of Poplar and Gmelina arborea. Write integrated management of anyone disease in each species. 10
How arc different parameters used in System Ecology? 10
Name five aromatic grasses with their uses and methods of extraction. 10
"There is replacement for rattans in forest based industry." Justify thi.s statement and list five important speCieS reported from different parts of the country. 10
B-JGT-K-GPB 4