Effect of land use system and altitude on carbon stability in naturally occurring clay-organic complex in soils of Arunachal Pradesh in the Eastern Himalaya, India

This study assessed the effect of land use systems (rice-fallow, bamboo, mandarin and forest) along an altitude gradient ( 1000 m asl) and soil depth (0-15, 15-30 and 30-45 cm) on C stability in naturally occurring clay-organic complex (NOCOC) and their relationship with soil properties. The C stabi...

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Bibliographic Details
Published in:Archiv für Acker- und Pflanzenbau und Bodenkunde 2023-09, Vol.69 (15), p.3405-3421
Main Authors: Tasung, Ampee, Ahmed, Nayan, Das, Ruma, Bhattacharyya, Ranjan, Bandyopadhyay, K.K., Singh, Neera, Das, Debarup, Gurung, Bishal, Datta, S.C.
Format: Article
Language:English
Subjects:
Altitude
Bamboo
Clay
Clay soils
clay-organic complex
Climate
Decomposing organic matter
Humus
Land use
land use systems
macroaggregate formation
Microorganisms
Organic soils
Soil depth
Soil properties
Soils
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Summary:This study assessed the effect of land use systems (rice-fallow, bamboo, mandarin and forest) along an altitude gradient ( 1000 m asl) and soil depth (0-15, 15-30 and 30-45 cm) on C stability in naturally occurring clay-organic complex (NOCOC) and their relationship with soil properties. The C stability in NOCOC (1/k) was determined from desorption rate constant (k) of humus-C by sequential extraction and was correlated with soil properties across the altitude. The C stability in NOCOC decreased (34%) with increasing soil depth from 0-15 to 30-45 cm. Across the altitudes, highest C stability in NOCOC was at > 1000 m asl (8.37 h) which was 12.7 and 9.4% higher than 500-1000 and 
ISSN:0365-0340
1476-3567
DOI:10.1080/03650340.2023.2241370