Tree Distribution and Habit preference with respect to the

Elevation, Rainfall and soil type of Western-ghats region

(Karnataka)

Presented by Sunipa Chaterjee and Parth Tailor

Study Area (56,808 km²)Western-Ghat Region of Karnataka

Objectives

1. To identify the tree distribution with reference to

Elevation, Aspect, Soil type and Rain fall.

2. To identify the extent of prevalence of individual

tree families and analysis of the area.

Methodology -

Data GenerationMap makingAnd showing the distribution pattern,

DEM data,Rain Fall, &Soil Data extraction

Of study areaWith Vector and raster analysis

Tree distribution with respect to elevation, Rainfall and soil

Tree Individual data detail

Data use-

DEM- ASTER Data

Rainfall, Soil type and Geo-regions of Western Ghats - Given data.

Western Ghats Geomorphic regions of Karnataka

Number of Trees in Geo-region

Impact of Elevation on Tree Distribution

Low elevation coastal region has effect of urban sprawl

0 - 375 (Low) 375 - 750 (Medium) 750 - 1137 (High)0

200

400

600

800

1000

1200

FamilySpeciesIndividual

Direction Tree Distribution Count (in%)

North 12.34

North-East 10.69

East 10.46

South-East 11.92

South 14.03

South-West 15.67

West 11.54

North-West 12.39

North

North-E

ast

East

South-

East

South

South-

West

West

North-W

est

02468

1012141618

Tree Distribution Count (in%)

Tree Distribution Count (in%)

Not much variation in distribution

Geographical Range of individual tree family

ANACARDIACEAE

ANNONACEAE

ARALIACEAE

ARECACEAE

CELASTRACEAE

CLUSIA

CEAE

CORNACEAE

DIPTEROCARPACEAE

EBENACEAE

ELAEOCARPACEAE

EUPHORBIACEAE

FABACEAE(CAESALP

INIO

IDEAE)

FABACEAE(FABOIDEAE)

FLACOURTIA

CEAE

LAURACEAE

MELASTOMATACEAE

MELIACEAE

MORACEAE

MYRISTIC

ACEAE

MYRSINACEAE

MYRTACEAE

PITTOSPORACEAE

RHIZOPHORACEAE

RUBIACEAE

RUTACEAE

SAPINDACEAE

SAPOTACEAE

STERCULIACEAE

SYMPLOCACEAE

THEACEAE0

5000

10000

15000

20000

25000

30000

35000

Geographical Range of Tree Families

Extent of prevalence (sq. km.)

(Sq.

Km

)

Rubiaceae Family Tree Distribution and Area Range

Tree distribution dependency on Rainfall

Tree Distribution in different Rainfall zones

5000< 5000-2000

2000-1500

1500-1200

1200-900

900-600

600>0

200

400

600

800

1000

1200

No. of FamiliesNo. of SpeciesNo. of Individuals

Tree distribution dependency on Soil type

Tree Distribution in different Soil types

Archean Complex

Rock

Basalt Gnisses Gnisses and Granite

Greywackes Greywackes rare Gnisses

and Sandstone

Alluvial0

100

200

300

400

500

600

700

800

900

1000

No. of FamiliesNo. of SpeceisNo. of Individuals

1. TREE DISTRIBUTION PATTERN AND GEOGRAPHICAL RANGE:

a) Tree population density is found to be highest in the central part of the

study area

b) Tree species of the families Rubinaceae, Ebenaceae, Euphorbiaceae

and Anacardiaceae are spread across the whole study area and has

highest geographical range.

2. HABITAT PREFERENCE:

a) Rain fall zone – 2000-5000mm

b) Soil type – Acrchean Complex rock

c) Elevation – 375 – 750 meters

d) Aspect – South-West direction

Conclusion…

Thank You