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Spatial variability in distribution of organic carbon stocks in the soil of North East India

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Title Spatial variability in distribution of organic carbon stocks in the soil of North East India
Not Available
 
Creator B. U. Choudhury, K.P. Mohapatra, Anup Das, Pratibha T. Das, L. Nongkhlaw, R. Abdul Fiyaz, S.V. Ngachan, D.J. Rajkhowa and G.C Munda.
 
Subject Land-use systems, phyto-biomass, soil organic carbon, spatial variability.
 
Description Not Available
Northeastern region (NER) of India has wide variation in physiography and climatic conditions. Because
of its strategic settings in the phyto-biomass-rich landscape of the Eastern Himalaya, the soils are rich in
organic carbon. However, sporadic information on
field-scale observations is available on soil organic
carbon (SOC) content at regional level. Information
on status and spatial variability of SOC and its complex interaction with land-use systems is scanty.
Therefore, an attempt was made to estimate spatial
variability in SOC inventories for surface soils across
six states of NER (viz. Assam, Manipur, Meghalaya,
Nagaland, Sikkim and Tripura covering a geographical area of 15.61 m ha) in Geographical Information
System (GIS) environment. Results revealed that the
soils were very high in SOC content – 98.54% area
had >1% and 14.4% area had > 2.5% SOC content.
Similarly, 76.5% area had SOC density of 20–
40 Mg/ha and 8% area had very high SOC density of
40–60 Mg/ha. A total of 339.8 Tg (1 Tg = 1012 g) SOC
stocks was estimated on an area of 10.10 m ha surface
soils representing all major land-use systems, with a
major share (>50%) coming from forest soils. Complex interaction of geographic location, rainfall, soil
texture and land-use practices significantly influenced
spatial variation in SOC content, density and stock.
The SOC content as percentage of total geographical
area was highest in Sikkim followed by Nagaland,
Manipur, Meghalaya, Assam and Tripura.
Not Available
 
Date 2020-01-23T04:19:36Z
2020-01-23T04:19:36Z
2013-03-10
 
Type Article
 
Identifier B. U. Choudhury, K.P. Mohapatra, Anup Das, Pratibha T. Das, L. Nongkhlaw, R. Abdul Fiyaz, S.V. Ngachan, D.J. Rajkhowa and G.C Munda. 2013. Spatial variability in distribution of organic carbon stocks in the soil of North East India. Current Science, 104(5):604-614.
ISSN 0011-3891
http://krishi.icar.gov.in/jspui/handle/123456789/31100
 
Language English
 
Relation Not Available;
 
Publisher Current Science Association