出版社：Thai Society of Higher Eduction Institutes on Environment
摘要：Given the complexity and heterogeneity of mangrove conservation landscape, research gaps still exists to quantifysulfate and total sulfide and their relationships with sediment properties and environmental covariates. Thirty-twosediment samples in the top layers (0-10 cm) were analyzed to assess biochemical properties, sulfate and total sulfide contents. With an average±SD value of 0.62±0.36 mg/g, the total sulfide content from the study site was high compared to the southern part of Thailand. The distribution of sulfate content exhibited high values in nearby land area which gradually reduced in seaward discharges/runoff, whereas high concentrations of total sulfide were highlighted around the center of the study site and vertically accumulated in the top few centimeters of soil and decreased with depth. The most pronouncedfactor affecting the amount of sulfate and total sulfide content was organic matter, while pH, organic carbon, potassium,salinity, and sediment-mangrove conditions correlated with sulfate and sulfide at different levels. Total sulfides concentration can be considered as indicator of over nutrient-rich sediments for assessing environmental quality perhaps the die-back ofmangroves. Concerns about high total sulfide concentrations across mangrove conservation areas should receive moreattention, in particular the reduction of OM from the anthropogenic source.
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