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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP
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    Abstract - Issue Mar 2021, 42 (2)                                     Back


nstantaneous and historical temperature effects on a-pinene

Above and below ground carbon stock of forest and agricultural land under different agro-ecosystems of Jorhat district       

R. Baruah1*, B.K. Medhi2, D. Bhattacharya2 and D.K. Patgiri2 

1Regional Agril Research Station, Assam Agricultural University, Diphu (Karbi-Anglog)-782 460, India

2Department of Soil Science, Assam Agricultural University, Jorhat-785 013, India

*Corresponding Author Email : rashmi.baruah@aau.ac.in

 

 

Received: 13.06.2020                                                                   Revised: 15.11.2020                                                    Accepted: 15.12.2020

 

 

 

Abstract

Aim: To develop detail data base for carbon stock in different agro-ecosystem (AESs) for forest and agricultural lands of Jorhat district.

Methodology: Soil samples from 12 different profiles along with biomass data at each site from 10x10 m, 5x5 m and 1x1 m quadrant for tree, shrub and herb and litter layer were collected from forest as well as agricultural lands covering the entire district.

Results: Study revealed that among different agro-ecosystems (AESs), above ground biomass (AGB) carbon was found to be highest for Humid Alluvial Flood Free (HAFF) (7.92 Tg) followed by High Land (HL) (3.20 Tg) and lowest was recorded for Char Area (CA) where as total biomass carbon stock was high under Humid Alluvial Flood Free (HAFF) situation followed by Humid Alluvial Flood Prone (HAFP) and then High Land (HL). Bulk density (BD) was higher for agricultural land compare to forest soil, but cation exchange capacity and organic carbon were opposite. Profiles under forest land use system exhibited relatively higher SOCD than paddy irrespective of AESs with an exception in one location of HAFF where SOCD under paddy showed higher value than forest land use system.      

Interpretation: It is important to develop some strategies or methodologies to improve soil carbon reserve in this region to reduce CO2 emission. Moreover, monitoring of change in carbon stock over years in different agro-ecosystems is also important to evaluate efficiency of different methodologies and proper implementation.      

Key words: Agro-ecosystems, Biomass carbon, Carbon stock, Quadrat sampling, Soil organic carbon

 

 

 

 

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