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Land Use/Land Cover
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Monitoring of Landuse using 3S'S, A case study for Palung Sub-Watershed
Results and Discussion
The total area of the Palung sub-watershed is 2878 ha. The areas under different land uses in
year 1992 and year 2001 are shown in Table 1. The area of agriculture land in this catchment
decreased nearly 12.1%, from 1157.8 to 1017.3 ha. Similarly, the area covered by forestland
increased by 18.1%. The changes in land use from 1992 to 2001 are shown in Table 2. The
spatial distributions of these land uses are shown in Figure 4.
Table 1. Areas of different land uses in years 1992 and 2001
Table 2. Land-use changes from year 1992 to 2001
Figure 4. Flow chart of the Analysis Procedure
Figure 5. Detail map of Palung sub-watershed
The area in this catchment devoted to agriculture decreased by 12.1% from 1992 to 2001. The
main reason is a flood in 1993 which washed away a huge area of farmland. In the course of
time, this land became forest. Nearly all shrub land has also been converted to forest through the
efforts of the District Soil Conservation Office under FINNIDA and under the community forest
programme of the District Forest Office financed by the World Bank. The area of forestland
decreased 2.5%. Most of the areas lost border existing agriculture land.
From this analysis it can be concluded that the forest situation in this catchment has improved.
This is a good indication that watershed management in this catchment has also improved.
Reference
- Orthophotomap, 1992: FINNMAP, Finland has developed orthophotomap of 23 sub-watersheds
for BIWMP from Arial photograph taken in year 1992 of 1:50,000 scale by Survey Department.
IRS1C, 2001, IRS1C (Indian Remote Sensing Satellite 1C) PAN geocoded photo ( 14 x 14 km )
on 6 Feb 2001 at 10:33. This product was bought from NRSA Data Center, National Remote
Sensing Agency, Department of Space, Government of India, Balanagar, Hydrabad-500 0037,
email: kaveri_d@Nrsa.gov.In, Phone No. +91-40-3878560, Fax: +91-40-3878158.
- Mariamni Halid , 1997: ACRS1997, Land Use-Cover Change Detection Using Knowledge based
approaches: Remote Sensing and GIS,
- Chien-Pin Lee, Stephen S. Young and Hao Chen , 2000: ACRS2000, Land-Cover Change in
China using Time Series Analysis, 1982 - 1999
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