Comparison in the carbon storage of biomass and soils between a mixed mangrove forest and a monospecific mangrove forest.

<p>Significant differences between two forests are indicated by *<i>p</i>< 0.05, **<i>p</i><0.01, ***<i>p</i><0.05, while NS indicates not significant difference at <i>p</i>>0.05.</p

Daily air temperature range and monthly precipitation in 2010 for the Gaoqiao mangrove research station.

<p>Daily air temperature range and monthly precipitation in 2010 for the Gaoqiao mangrove research station.</p

Comparison in the carbon storage of biomass and soils between a mixed mangrove forest and a monospecific mangrove forest.

<p>Significant differences between two forests are indicated by *<i>p</i>< 0.05, **<i>p</i><0.01, ***<i>p</i><0.05, while NS indicates not significant difference at <i>p</i>>0.05.</p

C/N ratios of soils and plant biomass for two types of mangrove forests (mean±SD).

<p>Different lowercase letters indicate significant differences at <i>p</i><0.05 between two mangrove species or the same mangrove species between forest types.</p

Monthly litterfall production for the <i>A. corniculatum</i> monospecific mangrove forest and the mixed mangrove forest of <i>S. apetala+A. corniculatum</i> from January to December 2010 (mean±SD; n = 5).

<p>Significant differences at each month between two forests are indicated by *<i>p</i><0.05, **<i>p</i><0.01 and ***<i>p</i><0.05, while NS indicates not significant difference at <i>p</i>>0.05. Note that in the mix forest the litter from two mangrove species were not separated.</p

The location of Gaoqiao mangrove research station (a and b) and the experimental plots in the mixed and monospecific mangrove forests (c).

<p>The location of Gaoqiao mangrove research station (a and b) and the experimental plots in the mixed and monospecific mangrove forests (c).</p

Bulk density (a), carbon concentration (b), and carbon density (c) at different soil depths for a mixed mangrove forest and a monospecific mangrove forest (mean±SD; n = 5).

<p>Significant differences between two forests are indicated by *<i>p</i>< 0.05, **<i>p</i><0.01 and ***<i>p</i><0.05, while NS indicates no significant difference at <i>p</i>>0.05.</p

Selected properties of soils and tree canopy structure for two different mangrove forests (mean±SD).

<p>Different lower case letters indicate significant differences at <i>p</i><0.05 between two mangrove species or the same species between two forest types.</p

Aboveground biomass (AGB) and belowground biomass (BGB) of two different mangrove forests (mean±SD) (Unit: Mg ha⁻¹)^*.

<p>*Here AGB did not include the biomass of <i>A. corniculatum</i> propagules (semi-viviparous fruits), while the BGB of <i>S. apetala</i> included all aerial roots. Different lowercase letters indicate significant differences at <i>p</i><0.05 between two mangrove species or the same species between two forest types. The values in the parentheses were the percentage of each component biomass to the total biomass for a given species.</p

Variation of N₂O effluxes in different vegetation types (a: KO, b: mixture and c: SA) with and without N addition (Control) during the entire experiment period.

<p>See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0146199#pone.0146199.g001" target="_blank">Fig 1</a> for abbreviations.</p