Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Landscape Transformation in Turag River Basin Between 1980 and 2010

M. A. Salam
Agriculture Division, (SPARRSO),Agargaon, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh

M. S. Alam
Department of Geography and Environment,Jahangirnagar University, Savar, Dhaka-1342, Bangladesh

Abstract/ Executive Summary:

Landscape transformation process for the study area has been analyzed for three decades. The change of each class has been studied and attempt has been made to find out the reasons of changing pattern. The change dynamics were not same all over the study area, so for detail analysis the whole basin has been classified into three different zones (High, Medium and Low land) on the basis of elevation as adopted by Soil Resources and Development Institute (SRDI) of Bangladesh. “Human settlement” has been changed more actively in “High land (Zone 1)”, on the other hand “Small area built-up” has been changed more actively in “Medium land (Zone 2)”. These two classes have been changed positively. “Forest” has been changed negatively in “High land (Zone 1)” compared to other two zones (Medium land and Low land). “Urban” area has been changed to “Medium land (Zone 2) as it is very near to Dhaka city. Another significant positive change has been found in “Brick field” area in low land (Zone 3) along the main stream of Turag river, and the reason for this is the easy transportation of bricks to Dhaka city and around by river transportation.

Keywords: Landsat TM, Landscape transformation, River basin

Location: The study area covers the Savar, Tejgaon, Kaliakoir, Gazipur Sadar, Sripur, Mirzapur, Shakhipur, and Bhaluka Upazilas partially or fully under Dhaka, Gazipur, Tangail and Mymensingh Zilas of Bangladesh.

Start Date: 00-01-1980

End Date: 00-12-2010

Program Area: Resource Development and Management

Commodity: Land management

Objectives:

1. To investigate the landscape transformation in Turag river basin between 1980 to 2010.

Methodology:

The present study has been undertaken to focus the entire Turag river basin as a study area which may also termed as ‘basin approach’. The reason behind this approach was to know the complete picture of the study area in an integrated way. Various components for hydro-geological studies of an area like total rainfall, water flow measurement, ground water recharge and fluctuation and as well as the evapo-transpiration can be closely and continuously measured and monitored if that area is a ‘river basin’. The study area is situated within 23⁰ 46' 57.30" and 24⁰ 25' 32.05" N latitude and 90⁰ 08' 56.54" and 90⁰ 26' 15.51" E longitude and generally located at central area of Bangladesh. The study area covers the Savar, Tejgaon, Kaliakoir, Gazipur Sadar, Sripur, Mirzapur, Shakhipur, and Bhaluka Upazilas partially or fully under Dhaka, Gazipur, Tangail and Mymensingh Zilas of Bangladesh. Geographical orientation of the study area in terms of other nearest rivers is as below: Old Brahmaputra River is in the north-east side, Meghna River is in the south-east side, Buriganga River is in the south and Dhaleswari River is in the west. Black and white aerial photographs of landuse maps of 2000 has been used under supervision from competent authority within SPARRSO laboratory. Landsat TM, Landsat MSS images for the year 1980, 1990 and 2010 respectively have also been used for the study. “Soil and land type map” of Soil Resources and Development Institute (SRDI) of Bangladesh has been used for this study. Digital image processing (DIP) was carried out in ERDAS IMAGINE software. Vector layers have been prepared in Arc/Info software.

Source of Information: J. Environ. Sci. & Natural Resources, 7(2): 115-125, 2014; ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Both direction and magnitude of landscape changes of TRB were found and documented in this research. The changes in forest area to built-up and agriculture area and losses of wet land through converting the drainage and ditch to other types of landuseare phenomenal.The studyperformed quantitative analysis on the magnitudeand patterns of landscape changes for the last three decades in Turag river basin and thus the findings are valuable resources for planners and decision makers to devise sustainable landuseand environmental planning.

Knowledge Management: Journal