Mi [ P Petpet 100

where,

MI = Moisture Index

PET = Potential Evapotranspiration (mm)

This information on moisture index is vital to congenial biotic environment and has been used to classify the climatic types. To arrive at homogeneous zones, the limit of moisture index of the various climatic types was scaled as shown in Table 3.

Table 1. Data for fields and location of meteorological and rain gauge stations

No.

Met/rain gauge station

Data fields Monthly

- Longitude

Elevation (meter)

Source

1.

Mukteswar

Rainfall, Temperature

10

29° 27' 28.7" N 79° 39' 27.2" E

2275

Institute Temperate Horticulture Station

2.

Hawalbagh

Rainfall, Temperature

10

29° 36' 00.0" N 79° 40' 00.0" E

1250

Met. Station

3.

Almora

Rainfall, Temperature

10

29° 35' 22.4" N 79° 38' 42.2" E

1528

Vivekanand ICAR Institute

4.

Pantnagar

Rainfall, Temperature

10

29° 02' 27.2" N 79° 24' 30.5" E

232

Agriculture University, Pantnagar

5.

Nainital

Rainfall, Temperature

10

29° 21'30.7" N 79° 27' 26.3" E

1945

Astronomy State Observatory, Nainital

6.

Dehra Dun

Rainfall .Temperature

10

30° 19' 00.0" N 78° 02' 00.0" E

682

Met. Station

7.

Mussoorie

Rainfall, Temperature

10

30° 27' 00.0" N 78° 05' 00.0" E

2024

Met. Station, CSWCRII Dehra Dun

8.

Chaukhutia

Rainfall

8

29° 52'32.1" N 79° 22' 15.6' E

976

Forest Conservation Department, Ranikhet

9.

Kedar

Rainfall

8

29° 47' 07.8'N 79° 15' 26.8" E

958

Forest Conservation Department, Ranikhet

No.

Met/rain gauge station

Data fields Monthly

- Longitude

Elevation (meter)

Source

10.

Naula

Rainfall

8

29° 44' 13.5" N 79° 15 11.8" E

886

Forest Conservation Department, Ranikhet

11.

Tamadhaun

Rainfall

8

29° 50' 49.0" N 79° 12' 05.4" E

912

Forest Conservation Department, Ranikhet

12.

Sauni

Rainfall

8

29° 37' 47.9" N 79° 22' 05.8" E

1599

Forest Conservation Department, Ranikhet

13.

Deolikhet

Rainfall

8

29° 38' 51.1" N 79° 27' 00.6" E

1715

Forest Conservation Department, Ranikhet

14.

Binta

Rainfall

8

29° 47' 10.0" N 79° 28' 14.5" E

1887

Forest Conservation Department, Ranikhet

"O

Table 2. Mean Temperature v/s Elevation Relationship

Month

Regression Equation

R2

January

y = - 0.0031 x + 14.106

0.89

February

y = - 0.004 x + 17.012

0.95

March

y = - 0.0047 x + 22.122

0.97

April

y = - 0.0051 x + 27.95

0.96

May

y = - 0.0057 x + 31.485

0.98

June

y = - 0.0059 x + 31.925

0.96

July

y = - 0.0058 x + 30.642

0.99

August

y = - 0.0054 x + 29.755

0.98

September

y = - 0.0053 x+ 28.855

0.99

October

y = - 0.0044 x + 25.133

0.95

November

y = - 0.003 x + 19.284

0.89

December

y = - 0.0018 x + 15.045

079

Table 3. Scaling of moisture index into different agro-climate types

Climatic type

Moisture Index

Symbol

Semi arid

-66.7 to - 33.3

D

Dry sub-humid

- 33.3 to 0

C1

Moist sub-humid

0 to 20

C2

Humid (4 classes)

20 to 100

B1, B2, B3 and B4

Per-humid

> 100

A

0 0

Post a comment