Table 4.

Changes in the nutrient release rate (k, g g⁻¹ days⁻¹) of bald cypress (A), Chinese willow (B), and heterogeneous-leaf (C) treatments under different submergence depths.

Foliar type	Depth (m)	C		N		P
		k′	R2	k′	R2	k′	R2
A	CK	2.97	0.87	2.03	0.73	4.69	0.87
	SS	4.84	0.87	3.48	0.80	5.13	0.79
	DS	3.75	0.73	3.61	0.77	5.96	0.84
B	CK	3.21	0.87	2.19	0.86	3.73	0.87
	SS	5.07	0.82	4.77	0.87	3.92	0.44
	DS	3.21	0.64	3.49	0.73	5.08	0.66
C	CK	2.79	0.87	2.53	0.86	3.65	0.75
	SS	4.66	0.83	4.30	0.87	5.67	0.70
	DS	4.31	0.75	4.50	0.80	5.72	0.74

k′, k × 10³; CK, control check (no submergence); SS, shallow submergence; DS, deep submergence.