Inland saline aquaculture increased carbon accumulation rate and stability in pond sediments under semi-arid climate

Similar to fresh- and brackish water aquaculture ponds, commercial shrimp farming in degraded saline areas holds the potential bury carbon (C) sediments. However, studies on mechanisms of sediment C dynamics C-flux response inland management practices are still scarce. Therefore, objectives present study quantify burial rate ponds assess impact sensitive fractions bottom ponds. The samples (n = 12 from each pond) were collected six (1000 m2 area different ages. depth, accumulation levels total (TC), organic (TOC) oxidizable (SOC) its determined using standard procedures. data analysed by one-way analysis variance (ANOVA), followed Duncan's multiple range test for comparing means, Pearson correlation was used relationship between pond parameters SOC content. results revealed that annual rates varied 902 1346 kg ha?1 year?1 7-year-old earthen (EPs) cemented (BCPs), respectively. fractions, including TC, TOC, (very labile, VLc; Lc; less LLc), non-labile (NLc)) progressively increased over age. years both active (AC) passive (PC) pools sediments, helped restoration improvement quality enhanced sequestration Furthermore, a significant increase level particulate (POC) BCPs justified non-ploughing at facilitated formation macro- micro-aggregates, thereby increasing retention stability This suggested semi-arid soils represented considerable hotspots, stable improved quality.