Figure Legends
Fig. 1. Setting and location. (a) Location of the Gonghe Basin
(Google EarthTM). The red rectangle and red circle
indicate the study site. Circulation systems influencing the study area
are also shown. Dashed and solid lines indicate the modern extent of the
East Asian summer monsoon (EASM) and Indian Ocean summer monsoon (ISM),
respectively (Winkler & Wang, 1993). (b) Genggahai Lake, its
surrounding physical environments, and the spatial distribution of
modern aquatic vegetation (Qiang et al., 2013).
Fig. 2. Seasonal
variations in the physical and chemical parameters of the lake water in
different plant growth areas of Genggahai Lake from May to September
(2012–2015). (a) Water temperature; (b) pH value; and (c) dissolved
oxygen concentrations.
Fig. 3. Variations in the
carbon isotopes of DIC precipitated from the (a)surface water in
Genggahai Lake and (b) waterbodies within its catchment from May to
September (2012–2015).
Fig. 4. Annual variations
in the carbon isotopes of DIC precipitated from the surface water in
Genggahai Lake and waterbodies within its catchment from 2012 to 2015.
Fig. 5. Correlation
between the carbon isotopes of inflowing water DIC and lake water DIC in
(a)Chara spp., (b) Potamogeton pectinatus , and (c)Myriophyllum spicatum growth areas.
Fig. 6. Correlation between the carbon isotopes of the lake
water DIC and oxygen isotopes of the lake water in the (a) Charaspp., (b) Potamogeton pectinatus , (c) Myriophyllum
spicatum growth areas.