Spatial Distributions of Humic Substances and Evaluation of Sediment Organic Index on Lake Dalinouer, China

Table 3

Speciation concentration of organic carbon, N, and P in the sediment cores from Dalinouer Lake (g kg⁻¹).

Parameters	Min			Mean			Max
	DLNE-3	DLNE-8	DLNE-8 (≤24 cm)	DLNE-3	DLNE-8	DLNE-8 (≤24 cm)	DLNE-3	DLNE-8	DLNE-8 (≤24 cm)
OP	0.063	0.044	0.044	0.141	0.059	0.057	0.181	0.081	0.075
ON	0.135	1.508	1.508	0.240	1.923	2.033	0.386	2.556	2.556
TP	1.279	0.985	1.107	1.624	1.155	1.214	2.192	1.309	1.309
TN	3.141	1.597	1.597	4.904	2.015	2.116	8.149	2.636	2.636
RW	0.547	0.236	0.419	0.612	0.586	0.611	0.730	0.797	0.797
LFOC	0.269	0.133	0.150	0.462	0.525	0.522	0.640	1.090	1.026
HFOC	37.324	15.896	16.431	49.538	21.207	22.797	59.431	30.171	30.171
TOC	37.788	16.167	16.749	50.000	21.732	23.319	59.856	30.744	30.744
LCOC	0.855	0.020	0.333	2.221	0.988	0.602	4.090	5.490	0.970
SCOC	0.049	0.255	0.255	1.486	1.427	1.295	5.981	2.209	2.034
TCOC	36.100	10.457	14.958	46.292	19.317	21.423	54.371	28.080	28.080
LCHA	0.007	0.049	0.049	0.192	0.702	0.344	0.632	3.254	0.976
SCHA	0.013	0.195	0.195	0.385	0.747	0.710	0.699	1.401	1.359
LCFA	0.357	0.081	0.081	2.030	0.807	0.366	4.045	5.103	0.873
SCFA	0.036	0.255	0.255	1.782	0.762	0.746	5.447	1.448	1.448
HM	36.100	10.457	14.958	46.292	19.317	21.381	54.371	28.080	28.080
HA	0.020	0.243	0.243	0.577	1.449	1.054	1.166	3.934	1.748
FA	0.917	0.063	0.199	3.131	1.299	0.965	8.675	5.866	1.711

OP: organic phosphorus; ON: organic nitrogen; RW: rate of water content; LFOC: light fraction organic carbon; HFOC: heavy fraction organic carbon; LCOC: loosely combined organic carbon; SCOC: stably combined organic carbon; TCOC: tightly combined organic carbon; LCHA: loosely combined humic acid; LCFA: loosely combined fulvic acid; SCHA: stably combined humic acid; SCFA: stably combined fulvic acid.