KXIX-B8, 2012
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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B8, 2012
XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia
i ids
Figure-4- Change Matrix LUC between 2000 to 2005
Figure-5- Change Matrix between 2000 to 2005
Figure-6- Methodological Flowchart —
The process methodology followed is to assess the extent
and density and type of vegetation and analyse the
deforestation, land use and land cover, geomorphological
aspects, and present land conditions, by extensive use of
GIS, Remote Sensing and Digital Image Processing
techniques, carried out specifically for the years, 1992,
1997, 2000, 2001, 2005 and 2007.
The Data Products Used for this study were satellite
imageries, GPS/DGPD readings, Survey of India(SOI)
Maps, field data from Watershed Departments to reach the
implementation point and information gathered from
beneficiaries and local people.
Topographic Maps. Available Topo Sheets of 1:50,000
scale were used. The satellite data products of Land sat,
IRS 1C, 1D and Resourcesat P6 were used. The data was
processed in GIS and Image Processing software land use
and land cover maps were generated, Other techniques
followed were Normalised Differential Vegetative
Index(NDVI), Ratio of Vegetative Index(RVI), Square root
of Vegetative Index(SQRT) and Transformed Normalised
Vegetative Index(TNDI). Digital image processing was
carried for the extracting information from satellite imagery
by importing the image, georeferncing, subsetting study
area, image enhancement, land use and land cover
classification, supervised and Unsupervised classification,
Accuracy Assessment, Determination of Vegetation
Density, estimation of Vegetation Indices and finally
estimation of Change Detection.
The following field observations were made from the
watershed evaluations in the three evaluated districts:
S. GAPS IN REMOTE SENSING FOR
WATERSHED DEVELOPMENT
User organizations like Agriculture, Rural Development,
Forests and other line departments desired to use large
scale maps of watershed resources to suit the village
cadastral scale of 1:7,920 or 1:3,960. The resource maps at
1:25,000 scales were overlayed to reduce cadastral map at
the same scale however could not satisfy the implementing
agencies as many small survey numbers were left un-
addressed. In addition to the resource maps, they needed a
detailed contour plan of 0.30 to 0.50 m interval with
updated cadastral boundaries to plan the layout of soil and
water conservation/ harvesting structures. Another
persistent demand from the said agencies is a full discovery
of the remote sensing applications in different stages of
planning for watershed development.
6. AN OPTIMISTIC VIEW:
The data requirements of the watershed agencies range
from a macro to a micro level of resource information. The
future missions of CARTOSAT-1 and 2 with 2.5 and 1.0 m
PAN resolution, respectively, and the P-6 with LISS-IV
sensor resolution of 6 m (multispectral) and AWIFS
resolution of 70 m imbibe a sense of optimism in meeting
the objectives of watershed development agencies. The
