American Journal of Water Resources
ISSN (Print): 2333-4797 ISSN (Online): 2333-4819 Website: http://www.sciepub.com/journal/ajwr Editor-in-chief: Apply for this position
Open Access
Journal Browser
Go
American Journal of Water Resources. 2014, 2(5), 106-109
DOI: 10.12691/ajwr-2-5-1
Open AccessArticle

Trends of Permanent Wetland Change in Detailed Area Plan of Dhaka

K.H. Razimul Karim1,

1Center for Environmental and Geographic Information Services (CEGIS), Gulshan 1, Dhaka, Bangladesh

Pub. Date: September 24, 2014

Cite this paper:
K.H. Razimul Karim. Trends of Permanent Wetland Change in Detailed Area Plan of Dhaka. American Journal of Water Resources. 2014; 2(5):106-109. doi: 10.12691/ajwr-2-5-1

Abstract

Degradation of wetland creates adverse impact on natural environment, ecosystem and on drainage congestion. The situation is more alarming in case of urban areas especially for detailed area plan (DAP) of Dhaka Considering the issues, the study has taken the initiative to rapid asses the Rate of Reduction of Wetland around DAP. Available satellite images from archive have been used to compare the areal extent and statistics of degradation of wetlands. Satellite images of 1967, 1977, 1989, 1999, 2009 and 2010 have been used for preparing permanent wetland maps. For permanent wetlands, images have been selected dated between January to March as permanent wetlands can only be identified in dry season. For finding the trend of changes of permanent wetland, images from Landsat2 MSS, Landsat4 TM, Landsat5 TM (all of 80 m resolution) and Corona Space photo Sensor (12 m resolution) have been acquired. From image, wetland is delineated by unsupervised classification method to get the real situation of DAP. The study shows that due to the unplanned rapid urbanization and increased population, permanent wetland is degrading. Study reveals that Permanent wetland has been reduced from 14% to 4% during 1967 to 2010.

Keywords:
degradation satellite images wetland urbanization

Creative CommonsThis work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

References:

[1]  Ferrati R, Canziani GA, and D.R. Moreno (2005). Estero dellbera: hydro-meteorological and hydrological characterization. Ecol Model, 186: 3-15.
 
[2]  Paul S, Jusel K, and C Alewell (2006). Reduction processes in forest wetlands: tracking down heterogeneity of source/link functions with a combination of methods. Soil Bio Biochem, 38: 1028-1039.
 
[3]  Nishat A, Hossain Z, Roy M K and. Karim A (eds.) 1993. Freshwater Wetlands in Bangladesh-Issues and Approaches for Management. IUCN, 1993.
 
[4]  Hulme PE 2005. Adapting to climate change: is there scope for ecological management in the face of a global threat? Journal of Applied EcoIogy volume 42: page 784-794.
 
[5]  Ferrati R, Canziani GA, Moreno DR (2005) Estero dellbera: hydro-meteorological and hydrological characterization. Ecol Model 186:3-15.
 
[6]  Root TL, Price JT, Hall KR, Schneider SH, Rosenzweig C, Pounds JA 2003. Fingerprints of global warming on wild animals and plants., Nature, page: 421: 57-60.
 
[7]  IPCC (International Panel on Climate Change) 1996. Climate change 1996-impacts, adaptations and mitigation of climate change: scientific technical analysis. Contribution of working group II to the second assessment report of the IPCe. Cambridge University Press, Cambridge.
 
[8]  IPCC (International Panel on Climate Change) 1998. The regional impacts of climate change: an assessment of vulnerability. In: Watson RT, Zinyowera MC, Moss RH (eds) A special report of IPCC working group II. Cambridge University Press, Cambridge.