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Assessment of Existing Carbon Stock in Soils of Aez-1 in Bangladesh

Pranesh Kumar Saha
Principal Scientific Officer
Soil Science Division, BRRI Gazipur

A.T.M.Sakhawat Hossian
Senior Scientific Officer
Soil Science Division, BRRI Gazipur

M. Sajidur Rahman
Senior Scientific Officer
Soil Science Division, BRRI Gazipur

M Khatun

Abstract/ Executive Summary:

Soil organic carbon (SOC) content (%) is decreasing with increasing soil depth irrespective of land types of all AEZs’ sites. The overall carbon stock of soil in low land condition was higher than that of high and medium high land in all four AEZs. In low land situation only Boro rice was grown but in high and medium high land situation T.Aman and Rabi crops were grown. It means the tillage operation was more in high and medium high land situation than low land condition might be the probable reason of having low soil carbon stock. On the other hand in low land situation having higher soil carbon stock may be the cause of lower elevation (deposition of top soil through run off) and comparatively longer period of submergence. Carbon stock of soil (0-20 cm) is higher in low land soil type than that of medium high land and high land soil type irrespective of AEZ. Among the four AEZs highest C stock was found in AEZ-1 irrespective of land types.

Keywords: Soil carbon stock, AEZ, High land, Medium high land, Low land

Location: BRRI Gazipur

Start Date: 01-07-2011

End Date: 30-06-2012

Program Area: Crop-Soil-Water Management

Non-commodity: Carbon sequestration

Objectives:

To document existing carbon stock in soils of 10 AEZs in Bangladesh.

Methodology:

Soil samples were collected from AEZ-1 to AEZ-10 by the Soil Science Division, Bangladesh Rice Research Institute (BRRI), Gazipur. Among ten AEZs carbon stock of four AEZs’ (AEZ-1,3,4 & 9) are presented here. AEZ 1. Old Himalayan Piedmont Plain: Haripur and Ranishankail, Thakurgaon AEZ. 3. Tista Meander Flood Plain: Rangpur Sadar and Pirgachha, Rangpur AEZ 4. Karatoya-Bangali Flood Plain: Sajahanpur and Dhunat, Bogra AEZ 9. Old Brahmaputra Flood Plain: Sarishabari and Jamalpur Sadar

Source of Information: Proceedings of BRRI Annual Internal Research Review, 2011- 2012

Article Link (Online Journal):

Funding Source:

1. Bangladesh Agricultural Research Council

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Carbon stock of low land soil (0-20 cm) is higher than that of medium and high land soil irrespective of AEZ. Among the four AEZs highest C stock was found in AEZ-1 irrespective of land types.

Knowledge Management: Report/Proceedings