Introduction and Importance of Forestry and Agroforestry PDF.pdf

Introduction and Importance of Forestry and Agroforestry

1. Prospects of Forestry
and Agroforestry
HAFIZ MASOOD AHMAD
Lecturer
Department of Forestry &
Range Management
University of Agriculture,
Faisalabad

2. INTRODUCTION (i)
WOOD
a natural organic material that has been
used for many centuries for the
construction of buildings, bridges and a
variety of other structures

3. INTRODUCTION (ii)
What is wood?
Wood is a central core of stem which consists of
dead xylem tissues.
The hard fibrous material that forms the main
substance of the trunk or branches of a tree or
shrub, used for fuel or timber.
What is Timber?
Wood prepared for use in building and carpentry

4. Introduction (iii)
What is tree?
Perennial woody green plant
Distinct upright stem (6 ftor more).

5. INTRODUCTION (iv)
Shrubs
Perennial woody green plant whose stem cannot be
distinguished from stem

6. INTRODUCTION (v)
Forest?

7. INTRODUCTION (v)
Forest?

8. Introduction (vi)
Forest
A community of flora and fauna dominated
by wood vegetation is called forest
Flora:
trees, shrubs, herbs, crops grasses
Fauna:
Animals etc
FORESTRY:
Application of science and arts to mange
a forest for getting maximum yields on
sustained bases

10. Agro-FORESTRY /FARM FORESTRY
Practice of forestry in farm lands for
obtaining numerous benefits such as wood,
fuel etc. OR
Growing of trees along with farm crops is
known farm forestry

11. Types of Agro-Forestry
Alleycropping
(growing crops between trees planted in rows).

12. Silvopasture (Tree and pasture combinations)

13. windbreaks and shelterbelts,

14. Riparian buffer strips (Trees, grasses, and/or
shrubs planted in areas along streams or rivers )

15. Forest farming (natural forested area is managed for
both wood products and an additional enterprise)

16. ADVANTAGES OF
FOREST

18. ADVANTGES OF FOREST
Trees
Take our waste carbon dioxide
Relationship b/w forests and GHE
Addition of CO2 by artificial way through
burning of fossil fuel:
Railway, Industries, automobiles and domestic
cooking
The Excess CO
2 has created a GHE
CO
2allows solar radiation to penetrate through
earth surface but does not allow earth radiation
to pass through and radiate back to space

19. Remember that:
To grow a pound of wood, a tree uses 1.47
pounds of carbon dioxide and gives off 1.07
pounds of oxygen.
Ref: Smith, M. Scott. 2002. UK Cooperative Extension services, University of
Kentucky, College of Agriculture, Department of Forestry Fact Sheet FORFS 02 -
02. Lexington, and Kentucky State University, Frankfort.
http://www.uky.edu/Agriculture/Forestry/forestry.html.
oA mature leafy tree produces as much oxygen
in a season as 10 people inhale in a year

20. Potential of a tree to produce per day
Oxygen (in term of Rs.)?
How much oxygen does a person consume in a day?
The average adult at rest inhales and exhales
something like 7 or 8 liters (about 1/4 of a
cubic foot) of air per minute. Thus a total of
11,000 liters of air (388 cubic feet) per day is
needed.
About 20-percent oxygen is available from the
inhaled air, the same is 15-percent by the air
exhaled, so about 5-percent of the volume of
air is consumed in each breath for yielding CO
2
.

21. Potential of a tree to produce per day
Oxygen (in term of Rs.)? (Contd.)
Therefore, a human being uses about550 liters (5% of
11000) of pure oxygen(19 cubic feet) per day.
Ref: http://health.howstuffworks.com/human -
body/systems/respiratory/question98.htm
(Price of oxygen: Rs 500/47 cft (10 liter) [Rs 50 per liter]
Cost for 550 liter oxygen= Rs 27500
Reqired O for vailability of 550 lit 2200 lit
Cost for 2200 liter oxygen=2200 x 50= Rs 27500
A mature leafy tree can oproduces about 226 liter (323 g)
oxygen per day amounting Rs. ( 226 x 50)= 11300

23. Clean atmosphere

24. ADVANTGES OF FOREST (DIRECT) (i)
Timber Wood: Construction, agricultural
equipment and household articles
Charcoal
Fire wood
Forage: For cattle in dry season and shortage
period of fodder
Food=> Fruit, Nuts,

25. ADVANTGES OF FOREST (DIRECT) (ii)
Dyes
Medicine
Honey, Smoke of Neem powder is mosquito
repellent
Eucalyptusand Cassia fistula: Treatment of
influenza
Raw Material: For sports and decoration
pieces

26. INDIRECT ADVANTAGES OF FOREST
1. Source of income: Increase crop production
Minor forest product:
Honey from forest.
Silk by raring Silkworm on Morus alba.
P. rob. =>Resin on distillation
Resin=Turpentine oil (75%) and Rosin (22%)
2. Moderation of climate: Shelterbelts decrease wind speed
Increase atmosphere humidity,
Minimize temperature
fluctuation
3. Control of Water logging and salinity
4. Decrease of soil erosion

27. INDIRECT ADVANTAGES OF FOREST
5. Soil Fertility: Rhizobium (in nodules),
(N-Fixation) Nitrobacteria (in Soils), etc.
Improve soil structure
(adding organic matter)
6. Landscaping
7. Cultural, spiritual, recreational services

28. THANKS