Understanding the Spatial Heterogeneity of CO₂ and CH₄ Fluxes from an Urban Shallow Lake: Correlations with Environmental Factors

Table 9

CO₂ and CH₄ fluxes from this study and literature.

Location	Vegetations	CO2 (mg m^−2 h^−1)	CH4 (mg m^−2 h^−1)	Observation period	References
Xuanwu lake	Lotus	Jun.: −19.56, Oct.: −10.59	Jun.: 5.59, Oct.: 1.72	Jun. and Oct., 2014	This study
	Heavy pollution	Jun.: 142.14, Oct.: 38.82	Jun.: 6.46, Oct.: 0.78
	slight pollution	Jun.: 36.07, Oct.: 3.16	Jun.: 0.29, Oct.: 0.11
Yellow River estuary, China	T. chinensis,; S. salsa,; S. alterniflora	111.03–241.97		Jun.–Dec., 2013	[18]
			−0.02–0.20
	Aquaculture pond	−39.49	0.0034
Poyang Lake, China	Heavy pollution	−39.60–212.30	0.08–1.12	Oct., 2010	[35]
Polegar Lake, Brazil	Oligomesotrophic	ND	Win.: 0.01–0.22; Sum.: 0.55–2.91	Win., 2006; Sum., 2007	[22]
Biguás Lake, Brazil	Eutrophic	ND	Win.: 0.06–0.83; Sum.: 0.68–40.16	Win., 2006; Sum., 2007	[22]
Crystal Bog; Trout Bog; Crystal Lake; Sparkling Lake, USA	Dystrophic; Dystrophic; Oligotrophic; Mesotrophic	30.46; 45.70; 0.40; 5.00	1.24; 1.71; 0.12; 0.18	Apr.–Nov.,; 1998	[23]
Oxbow Lake, Italy	Stagnant,; water chestnut	269.68 ± 19.80–; 822.25 ± 19.43	44.00 ± 4.27–; 77.53 ± 5.33	Jul., 2005	[25]
Yangtze River estuary	S. alterniflora	ND	0.64 (0.16–1.12)	Apr.–Oct., 2004	[36]
5 lakes, Netherlands	Mesotrophic-eutrophic	−6.00–123.90	1.40–18.10	Jun.-Jul., 2009	[37]
Bay of Fundy, Germany	S. alterniflora,; etc.	104.17	6.67	Jul.–Sep., 1996	[38]
Min River estuary, China	Shrimp pond	−48.79	1.00	Oct., 2011	[39]
	Polyculture pond of fish and shrimp	−105.25	5.74
Québec’s reservoirs, Canadian	Reservoirs	62.83	0.37	1993–2003	[40]
30 Boreal lakes, Finland	Eutrophic	ND	Median of 0.137	1998-1999	[41]
11 lakes, North America	Lakes	ND	0.15–3.2	Jun. to Aug., 2001	[11]
Switzerland	Reservoirs	40.42	0.01	Sep., 2003–Aug., 2006	[42]

Note. ND: no data. Win.: winter. Sum.: summer.