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Proceedings of the International Academy of Ecology and Environmental Sciences, 2022, 12(1): 1-16
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Article

Variation in soil organic carbon stocks in three tropical dry deciduous forests of Madhya Pradesh, India

Debojyoti Raha, Javid Ahmad Dar, Subashree Kothandaraman, Mohammed Latif Khan
¹Forest Ecology and Ecosystems Laboratory, Department of Botany, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, Madhya Pradesh, 470003 India
²Department of Environmental Science, School of Engineering and Applied Sciences, SRM University, Andhra Pradesh, 522502 India

Received 14 October 2021;Accepted 20 November 2021;Published 1 March 2022
IAEES

Abstract
Assessment of soil organic carbon (SOC) dynamics in tropical dry deciduous forests is imperative to know their contribution in regulating the regional and global carbon (C) cycles. In the present study, three forest types: dry deciduous teak (DDTF), dry deciduous mixed (DDMF) and Boswellia (BF) forests were selected to assess the variation in SOC and the factors influencing it. The SOC stocks (0-50 cm) varied significantly within and among the forest types and ranged from 48.7 (BF) to 89.1 (DDTF) Mg C/ha (mean: 64.6 ¡À 9.7 Mg C/ha). The differences observed could be due to variations in organic matter input, quality and quantity of litter produced, topography, vegetation composition, soil bulk density, soil moisture and soil depth. The total mean SOC stocks at 0-10, 10.1-30 and 30.1-50 cm depths were 19.2, 24.4 and 21.0 Mg C/ha, respectively. The SOC showed significant positive relationships with soil organic matter (r = 0.79, P < 0.01), soil moisture (r = 0.41, P < 0.01), aspect (r = 0.52, P < 0.01) and dominance (r = 0.53, P < 0.01), which accounted for 66.8, 15.7, 8.4 and 5.6% of variance. This study provided an understanding of the SOC stock variation among three tropical dry deciduous forest types in the Central Indian landscape and identified the roles of different drivers in SOC storage.

Keywords soil carbon;driving factors;topography;moisture;tropical dry deciduous forests;Central India.

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