Mangrove sampling in Hainan Island, China

SpH: sediment pH IS: interstitial water salinity(‰) SMC: sediment moisture content(%) MD: median diameter TOC: organic carbon TOM: sediment organic matter TN: sediment total nitrogen CN: sediment C/N ratio MS: the number of mangrove species DBH: diameter at breast height (cm) H: tree height (m) PD: plant density