National Wetland Atlas: Kerala - Ministry of Environment and Forests

More documents

Recommendations

Info

6.0 ACCURACY ASSESSMENT A comprehensive accuracy assessment protocol has been followed for determining the quality of information derived from remotely sensed data. Accuracy assessment involves determination of thematic (classification) as well as locational accuracy. In addition, GIS database(s) contents have been also evaluated for accuracy. To ensure the reliability of wetland status data, the project adhered to established quality assurance and quality control measures for data collection, analysis, verification and reporting. This study used well established, time-tested, fully documented data collection conventions. It employed skilled and trained personnel for image interpretation, processing and digital database creation. All interpreted imageries were reviewed by technical expert team for accuracy and code. The reviewing analyst adhered to all standards, quality requirements and technical specifications and reviewed 100 percent of the work. The various stages of quality check include: 1. Image-to-Image Geo-referencing/Data generation 2. Reference layer preparation using NWIA post monsoon and pre-monsoon LISS-III data. 3. Wetland mapping using visual/digital interpretation techniques. 4. Geo-data base creation and organization 5. Output products. 6.1 Data verification and quality assurance of output digital data files All digital data files were subjected to rigorous quality control inspections. Digital data verification included quality control checks that addressed the geospatial correctness, digital integrity and some cartographic aspects of the data. Implementation of quality checks ensured that the data conformed to the specified criteria, thus achieving the project objectives. There were tremendous advantages in using newer technologies to store and analyze the geographic data. The geospatial analysis capability built into this study provided a complete digital database to better assist analysis of wetland change information. All digital data files were subjected to rigorous quality control inspections. Automated checking modules incorporated in the geographic information system (Arc/GIS) were used to correct digital artifacts including polygon topology. Additional customized data inspections were made to ensure that the changes indicated at the image interpretation stage were properly executed. 14
Open water MNDWI NDPI NDVI Useful for wetland boundary extraction/delineation G R NIR Vegetation NDWI NDVI NDPI Useful for wetland vegetation & open water features G R SWIR Moderate IRS LISS III data, 07 January, 2007 MNDWI MNDWI NDTI Useful for qualitative turbidity delineation Figure 9: Various combinations of the indices/spectral bands used to identify wetland components 15
Page 1 and 2: NATIONAL WETLAND ATLAS: KERALA Spon
Page 3 and 4: Atlas SAC/RESA/AFEG/NWIA/ATLAS/14/2
Page 5: MESSAGE It gives me great pleasure
Page 9 and 10: ACKNOWLEDGEMENTS The project “Nat
Page 11: PROJECT TEAM Project Director: Dr.
Page 14 and 15: Figure 8: Steps in the extraction o
Page 16 and 17: now recognized as an essential tool
Page 18 and 19: 1.3 Wetland Inventory of India Indi
Page 20 and 21: • Aquatic vegetation spread: The
Page 22 and 23: Figure 3: Location Map Figure 4: Sp
Page 24 and 25: 5.0 METHODOLOGY The methodology to
Page 26 and 27: The indices were generated using st
Page 31: MAPS AND STATISTICS 17
Page 34: 7.1 DISTRICT-WISE WETLAND MAPS AND
Page 42: 7.1.2 Kannur Kannur town is the dis
Page 50: 7.1.4 Kozhikode Kozhikode District
Page 58: 7.1.6 Palakkad Palakkad district is
Page 66: 7.1.8 Ernakulam The total geographi
Page 74: 7.1.10 Kottayam The district has it
Page 82:
7.1.12 Pathanamthitta Pathanamthitt
Page 90:
6.1.14 Thiruvananthpuram Trivandrum
Page 97 and 98:
8.0 MAJOR WETLAND TYPES OF KERALA M
Page 99 and 100:
Sr. No. 5. Wetland Type: Pond Locat
Page 101:
IMPORTANT WETLANDS OF KERALA 87
Page 104 and 105:
9.1 Ashtamudi Wetland Plate 4: Asht
Page 107 and 108:
Plate 6: IRS LISS-III FCC - 5 km bu
Page 109:
Plate 8: Wetland map - 5 km buffer
Page 112 and 113:
9.3 Vembanad-kol Wetland Plate 10:
Page 114 and 115:
100
Page 116 and 117:
9.4 Parambikulam Dam Name: Parambik
Page 118 and 119:
104
Page 120 and 121:
9.5 Periyar Lake Name: Periyar Lake
Page 122 and 123:
108
Page 124 and 125:
110
Page 126 and 127:
112
Page 128 and 129:
114
Page 130 and 131:
116
Page 132 and 133:
118
Page 134 and 135:
120
Page 136 and 137:
122
Page 138 and 139:
124
Page 140 and 141:
126
Page 142 and 143:
1202 Tanks/Ponds: A term used in Ce
Page 144 and 145:
130
Page 146:
Space Applications centre Indian Sp
show all

National Wetland Atlas: Kerala - Ministry of Environment and Forests

Create successful ePaper yourself

Delete template?

Save as template?