Fire-fallow agriculture as a sustainable cropping system for maintaining organic carbon in Maré Loyalty Island (New Caledonia, southwest Pacific)

نویسندگان

چکیده

Abstract The Loyalty Islands are part of the French archipelago New Caledonia in Southwest Pacific. In these islands, Gibbsic Ferralsols (Humic) traditionally used for fire-fallow cultivation (FFC) by Kanak people, but planting perennial orchards has been encouraged over past two decades. impacts this policy on soil organic carbon (SOC) nevertheless unknown, especially clay-free soils which matter is main contributor to fertility. SOC and permanganate oxidizable (POXC) were studied avocado orchards, FFC, secondary native forests. Mean stocks particularly high, ranging between 71.9 194.4 MgC ha ?1 an equivalent mass 2000 Mg , they significantly impacted land use. Avocado farming reduced about 30% compared forest soils, even if fields established forests that had already experienced losses. contrast, FFC did not impact them. POXC content decreased as degree anthropization increased; however, it was less sensitive than highlighting storage can be achieved through changes agricultural practices farming, with support farmers transitioning from family management designed enhance recovery

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ژورنال

عنوان ژورنال: Regional Environmental Change

سال: 2021

ISSN: ['1436-378X', '1436-3798']

DOI: https://doi.org/10.1007/s10113-021-01814-x