Hydrochemical Characteristics and Controlling Factors of Typical Dolomite Karst Basin in Humid Subtropical Zone

Table 1

Water samples collected in the study area.

No.	Name	Water type	Code	Notes
1	Niejiayan	Karst surface water	NJY	Shanmuhe Basin outlet
2	Huangzhouhe–Shanmuhe intersection		HZHH	Downstream of Huangzhouhe–Shanmuhe intersection
3	Shanmuhe–Huangzhouhe mouth		HZHX	Shanmuhe–Huangzhouhe mouth
4	Huangzhouhe–Shanmuhe mouth		HZHD	Huangzhouhe Basin outlet
5	Jiangjiatian River		JJTH	Has relatively high amount of Spirogyra
6	Jiangjiatian River west		JJTX	West tributary of Jiangjiatian River
7	Jiangjiatian River east		JJTD	Jiangjiatian River mouth of Shanmuhe
8	Liangcha River intersection		LCHH	Downstream of Liangcha River intersection
9	Liangcha River west		LCHX	West tributary of Liangcha River
10	Liangcha River east		LCHD	Shanmuhe–Liangcha River mouth
11	Huoma River		HMH	Tributary of Huangzhouhe
12	Baiduo intersection		BDH	Downstream of intersection of north and south tributaries of Baiduo River
13	Baiduo north		BDB	North tributary of Baiduo River
14	Baiduo south		BDN	South tributary of Baiduo River
15	Shandong River single-plank bridge downstream		XBDMQX	Downstream of Xiaba single-plank bridge of Shandong River
16	Shandong River single-plank bridge upstream		XBDMQ	Upstream of Xiaba single-plank bridge of Shandong River
17	Shandong River Xiaojiaba 5		XJB5	Shandong River Xiaojiaba 5
18	Shandong River Xiaojiaba 4		XJB4	Shandong River Xiaojiaba 4
19	Shandong River Xiaojiaba 3		XJB3	Shandong River Xiaojiaba 3
20	Shandong River Xiaojiaba 2		XJB2	Shandong River Xiaojiaba 2
21	Shengxi		SX	Shengxi, upstream of Shandong River
22	Tangtou River	Allogenic surface water	TTH	North allogenic water in the basin
23	Chayuan River fall		DZ	North allogenic water in the basin, also influenced by rocks in Qingxudong Formation
24	Xindi River (near Shiqiao Village)		XDH	Allogenic water near Shiqiao Village
25	Xiaojia River trench		XJHG	Surface allogenic water
26	Niejiayan spring	Karst groundwater	NJTQ	Spring flow is very small, only 0.02 L/s
27	Daguniang well		DGNJ	Karst spring on the left bank of Shanmuhe
28	Gaotan		GT	Karst spring on the right bank of Shanmuhe
29	Youyu Dong		YYD	Karst spring on the right bank of Shanmuhe with big and stable flow across seasons
30	Luojiatian spring		LJT2	Groundwater in weathering crust of dolomite
31	Heichong upper spring		HC3	Heichong upper surface spring
32	Xiaba spring		XBQ	Karst spring in Xiaba
33	Xiaba big spring		XBDQ	Karst spring in Xiaba whose flow is bigger than Xiaba spring
34	Single-plank bridge		DMQQ	Karst spring in single-plank bridge
35	Laozhaichang well		LZCJ	Groundwater near Laozhaichang
36	Hetaoping spring	Allogenic groundwater	HTP	Hard quartz sandstone near the spring
37	Lengshui River spring	Mixed groundwater		Big flow, near Xindi Village
38	Xindi spring (Xindi three-eyed well)		XDQ	Karst spring in Xindi
39	Shuangbikong		SBK	Outlet of an underground river in Shanmuhe Basin, influenced by Qingxudong Formation limestone, dolomite, and allogenic water
/	Yuntaishan, Niejiayan	Rain water	NJYR	Two samples of atmospheric precipitation are collected