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