Geochemical Behavior of Sedimentary Phosphorus Species in Northernmost Artificial Mangroves in China

Mangroves are typically found in tropical coastal areas, and these ecosystems face deterioration loss due to threats from climate human factors. In this study, sediment cores were collected human-planted mangroves sub-tropical Ximen Island, China, determined for sedimentary phosphorus (P) species. The objective was investigate the ability of planted a zone bordering their temperature limit preserve regulate P. Our results showed that bioavailable P (BAP), which includes exchangeable-P (Ex-P), iron-bound (Fe-P), organic (OP), accounted approximately 64% total (TP). Apatite (Ca-P), 24% TP, most likely originated aquaculture activities surrounding island. vertical distribution species along rather constant trend salt marsh stand but considerable fluctuations bare mudflat. These indicate accumulated when there high discharge event, eventually released during matter decomposition contributed Ca-P formation. Nevertheless, old young higher species, OP, BAP compared mudflat areas. This study potential outside suitable