Sub-soil organic carbon sequestration and USDA Soil Taxonomy of coastal acid sulphate soils; constraints and their solution learned from a pedon study in the Kole land ecosystem of Kerala, India

Nideesh, P; Sreelatha, A. K.; Anilkumar, K. S.

doi:10.1080/00103624.2021.1872604

Cited by 4 publications

(2 citation statements)

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“…The sub‐surface C stocks at 0–100 and 0–150 cm were higher in the coffee soils of Wayanad and Idukki as evident from the higher values of relative change. For the 0–100 cm layer, the values were + 16.81 and + 7.12 per cent, respectively, in Wayanad and Idukki and this layer contributes mainly to the plant growth (Nideesh et al., 2021). The soil organic carbon stock was consistent with that of SOC content over the 0–150 cm profile among all the SQMS studied.…”

Section: Discussionmentioning

confidence: 99%

“…A loss of 50%-61% upon deforestation for agriculture has been reported by Hombegowda et al, 2016. The 0-50 cm layer is important as this depth has maximum feeder roots and has a maximum capacity for water and nutrient retention, again the area of highest microbial biomass and biodiversity (Nideesh et al, 2021). The higher SOC stock in the surface of forest soils could be because of the lower bulk density at the forest surface as a result of organic carbon-rich surface soils, which is remaining intact in the top layer with a litter of forest trees that is also supported by the findings by Karthika et al, 2022.…”

Section: Land Degradation Vulnerabilitymentioning

confidence: 99%

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Assessing changes in soil organic carbon stocks and vulnerability to land degradation in Western Ghats, South India: Is it restorative enough?

Kavukattu Sreekumar,

Anil Kumar,

Madhusoodanan Nair

et al. 2024

Soil Use and Management

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Soil organic carbon stock is an important universal land degradation indicator. Owing to the depletion in soil nutrients, the pace of land degradation has increased in the Western Ghats of South India. To understand the changes in surface and subsurface soil organic carbon stocks and vulnerability to land degradation upon land use change, a study was carried out along the natural forest and coffee plantation ecosystems of Western Ghats in South India. The study sites were located in Chikmagaluru of Karnataka and Wayanad and Idukki districts of Kerala. Soil organic carbon stocks (SOC) at the surface (0–30 cm) were higher, 9.10 t C ha−1 and 7.49 k t C ha−1 in forest soils of Chikmagaluru and Idukki, respectively, and the subsurface (30–100 cm) SOC stocks were higher in the coffee plantation ecosystems, 9.11, 9.87, and 8.41 t C ha−1, respectively, in Chikmagaluru, Wayanad, and Idukki. Vulnerability analysis revealed that Chikmagaluru forest (0.57) and coffee (0.51), Wayanad forest (0.58) and coffee (0.55) land uses were low, and both the land uses in Idukki were medium in the status of land degradation with scores of 0.65 and 0.60, respectively, in forest and coffee ecosystems. The difference in the status of land degradation was mainly because of changes in soil reaction, surface, and subsurface SOC stock. An increase in soil pH, CEC, and available nutrients upon conversion to coffee plantation along with increased subsurface carbon storage have confirmed the restorative properties of coffee land use even after conversion from natural forests.

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Section: Discussionmentioning

confidence: 99%