Hydrological conditions and the properties of rhizosphere soil at the high, middle and low tide levels in the Zhuhai Mangrove Area.

Note: FH, estimated hours when the surface layer was under water during each 24 h period (h); HFL, estimated vertical height from the lowest tide (m); M, moisture (%); EC, electrical conductivity (ds m-1); TP, total P content (g kg-1); AP, available P content (mg kg−1); AN, available N content (mg kg−1); OM, organic matter content (%); HTL, MTL and LTL represent the high, middle and low tide level, respectively; values with different letters in the same column are significantly different at the P<0.05 level (mean ± SE, n = 9).