期刊名称：International Research Journal of Environmental Sciences
电子版ISSN：2319-1414
出版年度：2018
卷号：7
期号：12
页码：21-35
语种：English
出版社：International Science Community Association
摘要：Various phosphorus (P) fractions in the mangrove soils were studied by incubation study (180days) to understand the biogeochemical cycling in the mangrove soils of Eastern coast of India. The soil was analysed using sequential extraction procedure. Total phosphorus were ranged from 18893 mg/kg and 3268 mg/kg and Org-P was the dominant fraction which contributed about 89.2% of total P. Ion bound phosphorus (Fe-P) was the most important fraction among the inorganic P forms may be because of Fe-oxide, sulphate reduction. The study suggested that speciation of phosphorous (P) had good correlation among themselves. In addition, the various P fractions were increased during incubation period and these pools in turn supplement the SP thereby maintaining a high amount of P in the mangrove soil. At surface soils the pH and Eh exhibited stable values during inundation and the Eh dropped significantly from 98 to -215.1 mV, concurrently with pH increase to basic values (6.2-8.1). These results indicate that influence of electro chemical properties on phosphorus geochemistry in mangrove soil. The study concluded that quantifying the relation between P fractions in mangrove soils is required to realize the mangrove ecosystem in connection with human intervention.
