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Notion Press Old No. 38, New No. 6 McNichols Road, Chetpet Chennai - 600 031 First Published by Notion Press 2019 Copyright © Cotton University 2019 All Rights Reserved. ISBN 978-1-68466-656-0 Cover Page Photography: Ar. Praschaya Kaushik This book has been published with all efforts taken to make the material error-free after the consent of the author. However, the author and the publisher do not assume and hereby disclaim any liability to any party for any loss, damage, or disruption caused by errors or omissions, whether such errors or omissions result from negligence, accident, or any other cause. No part of this book may be used, reproduced in any manner whatsoever without written permission from the author, except in the case of brief quotations embodied in critical articles and reviews. The editors, reviewers and the publisher shall not be responsible or liable to any person or entity with respect to any error, plagiarism, improper citations, credits and any loss, incidental or consequential commercial damages accruing thereof. CONTENTS Preface � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � vii Acknowledgements � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � xi List of Contributors � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � xiii 1. Contemporary Geospatial Technology and Current Requirements for Mapping Wetlands ������������������������������������������������������� 1 S.K. Patnaik 2. Mitigating extreme weather events through wetland conservation ����� 15 Vinay S P Sinha, Nehru Machineni, Prasoon Singh and Himani Singh 3. Development of Framework for the Assessment of Riverine Floodplain Wetland Inventory in Majuli Island, Assam, India . 27 B.P. Bhaskar and Utpal Baruah 4. Status of Wetlands in Kamrup District of Assam: A Geo-spatial Analysis . 57 Prasanna Boruah, Ramen Sarma, Rashmi Hazarika and Pradip Sharma 5. A Study on the Sources of Pollution in the Deepar Beel . 69 Dhwajendra Nath Das and Neeta Baishya iv | Contents 6. Socio-Ecological Importance of Wetland A Case Study on Rudrasagar Lake (Ramsar), Melaghar, Tripura ������������������������������������� 83 John Zothansanga Rokhum and Abhinandan Saikia 7. Degradation of Wetland (beel) Environment: A Case Study of Selected Wetlands (beels) of Sipajhar Revenue Circle, Darrang, Assam ����������������������������������������������������������������������������������������������������������� 97 Dhanjit Deka and Binod Kumar Nath 8. Change of Wetlands: A Threat to the Living Conditions of People in Guwahati city, Assam, India . 111 Praschaya Kaushik 9. Ecological Status of Wetlands in Barpeta District, Assam ����������������� 125 Anjan Deka and Mala Dutta 10. Dynamics of Decadal Landuse/landcover Change and Analysis of Certain Water Quality Parameters of Chandubi Lake, Assam, India . 137 Tanvi Hussain, Pankaj Gogoi, Kaustubh Rakshit, Jaideep Baruah and Arup Kumar Misra 11. Challenges to Traditional Livelihood Practices of Village Dwellers Around Dora Beel in Kamrup District, Assam ������������������� 153 Meghna Das and Barnali Gogoi 12. Study of Change in Water Level and Development of Interactive Gis Dashboard for the Ramsar Site ‘Deepor Beel’ using Space Technology and Python Script . 163 Amlan Saikia, Mustak Ali, Runjun Baruah, Utpal Sarma and Samiran Kalita 13. Environmental Status of Maguri Wetland (beel) Using Aquatic Insect Community as Bioindicator . 171 Arundhati Gogoi and Pradip Kr. Sarma Contents | v 14. Macrophytic Composition of Deepor Beel: The only Ramsar Site of Assam, India . 185 Samiran Kalita, Manisha Sharmah, Parthib Kashyap Sarma and Jaideep Baruah 15. An Analysis on the Livelihood Issues Related to the Wetlands: A Case Study of Samaguri and Gotanga Beels of Nagaon District, Assam ��������������������������������������������������������������������������� 193 Ananya Saikia and Pradip Sharma 16. The Deepar Beel catchment and landscape: A spatial assessment using Remote Sensing and GIS for facilitating management of sustainable ecosystem services ����������������������������������� 211 Partha Jyoti Das and Arup Kumar Das 17. Understanding the livelihood sources, benefits sharing and future aspects of the communities around Batha beel; Darrang District, Assam ������������������������������������������������������������������������� 229 Firdoushi Al Islam 18. Impacts of Urbanization on the Wetlands of Bashistha and Bahini-Bharalu River Basins in Guwahati, Assam . 241 Tarali Devi and Pradip Sharma 19. Gageli Beel and its Native Ichthyo-faunal Diversity: A Study with its various threats, challenges and measures ������������������������������� 255 Rajib Ratan Kashyap 20. Environmental Status of Selected Wetlands in Lower Part of Digaru and Kalong River Basin, Assam . 267 Dharma Ram Deka 21. Ecosystem Services, Traditional Ecological Knowledge and Culture: Case of the Chandhubi Lake, Assam . 277 Barsha Baishya vi | Contents 22. Formation and Subsequent Changes of Wetland Along the Course of South Dhansiri River ������������������������������������������������������������� 287 Nitashree Mili and Parmita Saikia 23. Alien Plant Invasions: An Emerging Threat to the Wetlands of Assam ����������������������������������������������������������������������������������������������������� 299 Durlav Nr Singha and Gunajit Kalita 24. A Study of Fish Mortality by temperature in water of the Wetland Ecosystem . 317 Neeta Baishya and Dhwajendra Nath Das 25. Livelihood of Char Dwellers in the midst of the Brahmaputra: A Case Study of Chaprapara Char in Nalbari District ����������������������� 327 Abul Fazal Murtaza Ahmed and Parijat Borgohain 26. Assessment of Water Quality of the Batua Kamakhya Wetland of Nalbari District . 341 Rashmita Goswami 27. Land Use/land-cover Analysis for Conservation of Deeporbeel Area, Assam: a Geospatial Approach . 351 Parimita Saikia 28. Lands of India: a Review of Ramsar Sites ��������������������������������������������� 363 Vipin Solanki and Aparna Joshi Excerpts from the Keynote Speech � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 377 A Note on Stakeholders Meeting � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 381 CONTEMPORARY GEOSPATIAL TECHNOLOGY AND CURRENT REQUIREMENTS FOR MAPPING WETLANDS S.K. Patnaik Corresponding Author E-mail: [email protected] ABSTRACT: Wetlands are an integral part of the landscape ecosystem. Wetland/wetland vegetation Mapping and its importance has been witnessed and academics have been engaged since 1956. Ramsar Convention 1971 provided a platform for countries to work individually and collectively towards mapping and managing wetlands throughout the globe. India also prepared State-wise and National Wetland Atlas by 2013 at 1:50000 scale with wetland units less than 2.25ha area as points. This is a handicap for administration to identify, assess and implement management and conservation practices. These became target for encroachment, conversion to crop fields and settlements. A case study was done in 2014 for Jay Sagar Wetland area in Nagaon district and was found that it is used commercially by wet rice cultivation and fisheries. LandSat 8 for two time line and two seasons for the adjacent areas of Brahmaputra River covering districts of Nagaon, Morigaon, Darrang, Sonitpur have been processed for LULC with same training sets. LULC of year 2005 from Bhuvan have been utilized to compare estimates. NDWI have been derived to associate with the presence of wetlands in the area. Topographic Position Index (TPI) and Topographic Wetness Index (TWI) have been derived and related to the existing wetlands. The results are fuzzy and become unreliable, when a high accuracy data set is envisioned. Conservation and reclamation of wetlands are of prime importance now, as encroachment is a slow and continuous process besides altering the local hydrological and surface runoff routings. A policy for administrative interventions can be framed after visualization and estimation through 2 | Harnessing Wetlands for Sustainable Livelihood accurately defined extent at cadastral level for wetlands. Digital Land Records maintained by Administration can also be utilized in conjunction with satellite image based reconnaissance survey, GIS based modeling for surface hydrology and runoff routing and cadastral or mobile mapping; to map the wetlands accurately. Keywords: Ramsar Convention, wetland mapping, local hydrology, runoff routing, Topographic Position Index, border mapping INTRODUCTION Land has been the most valuable resource that has supported civilizations. Water is the indispensible resource that has facilitated civilizations to thrive. Drainage Basin has been the defining unit for provisioning of land and water resources at different levels; local to regional; that helped civilizations to colonize at few areas within its boundary. Different climate regimes have played their role in allowing or restricting human use of land and water. Brahmaputra River Basin covering an area of 712,035 km2 has an average discharge of 19,800 m3/s commands a huge hydro-geomorphological control. An area of 194,413 km2 is drained by Brahmaputra and its tributaries in India. Due to its vastness and its importance Brahmaputra River with average water Resource potential of 537240 million m3 and utilizable surface water resource of 24000 million m3; its parameters are extensively monitored by Central Water Commission through