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- Title
The older, the better: a comprehensive survey of soil organic carbon under commercial oil palm plantations.
- Authors
Golicz, Karolina; Cheak, Sim Choon; Jacobs, Suzanne; Große-Stoltenberg, André; Safaei, Mojdeh; Bellingrath-Kimura, Sonoko; Breuer, Lutz; Wartenberg, Ariani
- Abstract
Soil conditions of croplands are a frequent topic of scientific research. In contrast, less is known about large-scale commercial plantations of perennial crops such as oil palm. Oil palm is a globally important tropical commodity crop which contributes to both food and energy security due to its exceptional productivity. However, oil palm crops are associated with short lifecycles and high nutrient demands, which may disproportionately affect soil health. With the goal of exploring baseline soil properties in commercial oil palm plantations, we evaluated data from two large-scale soil surveys carried out in 2014/2015 and 2018/2019 across more than 400 fields located throughout Peninsular Malaysia. We examined variation in field-measured soil quality indicators with a focus on soil organic carbon content at three depths (0–15 cm, 15–30 cm, 30–45 cm) and investigated links with spatial covariates, including plantation age. We found SOC contents to be low (1.6–2%) across the sampled locations with limited correlation with spatial predictors employed in soil organic carbon modelling. Furthermore, we found that immature and young mature plantations, which consisted of fields that were re-planted as part of a 20-year-long oil palm rotation, were characterised by significantly lower soil organic carbon content than the mature plantations. This suggests that management practices should target younger oil palm plantations for soil organic conservation measures to increase the overall baseline SOC content, which will subsequently accumulate over the plantation's lifespan. We further provide recommendations for future soil sampling efforts, which could increase the robustness of collected data and facilitate their use for soil monitoring through modelling approaches involving, for example, digital soil mapping.
- Subjects
ENVIRONMENTAL soil science; DIGITAL soil mapping; CARBON in soils; SOIL surveys; SOIL science; OIL palm
- Publication
Environmental Monitoring & Assessment, 2025, Vol 197, Issue 1, p1
- ISSN
0167-6369
- Publication type
Academic Journal
- DOI
10.1007/s10661-024-13540-y