Table 2.

Mass loss and nutrient release of C, N, and P after 30 days and 360 days decomposition of bald cypress (A), Chinese willow (B), and heterogeneous-leaf (C) treatments under different submergence depths.

Depth	Foliar type	Mass loss (%)		C release (%)		N release (%)		P release (%)
		30 days	360 days	30 days	360 days	30 days	360 days	30 days	360 days
CK	A	18.95 ± 1.07Cb	53.71 ± 0.4Cc	16.48 ± 1.26Bb	71.44 ± 2.39Ab	− 11.62 ± 6.94Bb	53.92 ± 3.29Ab	22.06 ± 2.77Ab	85.2 ± 0.5Ac
	B	27.81 ± 0.76Ac	67.08 ± 1Ac	28.13 ± 1.94Ab	73.05 ± 0.79Ac	− 1.26 ± 2.84ABb	53.64 ± 0.91Ac	19.59 ± 6.23Ab	77.33 ± 0.47Bb
	C	23.55 ± 1.16Bb	61.43 ± 0.74Bc	25.63 ± 1.59Ab	64.87 ± 0.27Bc	10.17 ± 2.97Ab	60.22 ± 1.98Ab	24.68 ± 4.96Ab	70.4 ± 1.97Cb
SS	A	50.68 ± 0.61Ba	82.89 ± 0.48Ba	42.01 ± 1.06Ba	86.5 ± 0.55Ba	29.1 ± 3.19Ba	76.58 ± 0.59Ba	68.59 ± 0.57Ca	90.82 ± 0.25Bb
	B	63.83 ± 0.35Aa	89.05 ± 1.77Aa	55.36 ± 0.54Aa	91.87 ± 1.33Aa	29.84 ± 2.5Ba	87.98 ± 1.45Aa	86.45 ± 0.5Aa	92.99 ± 1.04Ba
	C	62.05 ± 1.82Aa	90.09 ± 0.32Aa	55.69 ± 2.13Aa	90.15 ± 0.35Aa	40.06 ± 2.32Aa	86.72 ± 1.02Aa	77.8 ± 0.54Ba	96.23 ± 0.5Aa
DS	A	48.23 ± 1.39Ca	79.32 ± 1.37Bb	43.3 ± 3.33Ba	82.69 ± 1.74Aa	28.47 ± 1.04Ba	77.73 ± 2.96ABa	63.76 ± 1.61Ba	92.77 ± 0.55Aa
	B	59.29 ± 0.65Bb	78.84 ± 0.59Bb	53.39 ± 1.28Aa	79.58 ± 1.55Ab	26.97 ± 2.87Ba	74.09 ± 2.14Bb	81.98 ± 0.98Aa	93.65 ± 0.29Aa
	C	64.42 ± 0.76Aa	84.96 ± 1.76Ab	58.68 ± 0.93Aa	85.69 ± 2.19Ab	46.78 ± 2.3Aa	83.99 ± 2.15Aa	78.92 ± 1.12Aa	94.63 ± 0.9Aa

Different capital letters indicate significant differences in mass loss and nutrient release from different foliar types under the same treatment; different lowercase letters indicate significant differences in mass loss and nutrient release of the same foliar type under different treatments.

CK, control check (no submergence); SS, shallow submergence, DS deep submergence.