Table 1 Average alpine lake surface area and its proportion over the last decade, annual CO2 and CH4 fluxes, and total carbon exchange for alpine lakes on the QTP

From: Net carbon dioxide sequestration by large alkaline lakes dominates the carbon exchange of Qinghai-Tibet Plateau lakes

Lake Size

Area

(km2)

CO2 flux

(g CO2 m−2 yr−1)

CH4 flux

(g CH4 m−2 yr−1)

C exchange

(Tg C yr−1)

Small

1589 (3%)

122.2 (77.8–211.1)

10.4 (4.5–20.6)

0.07 (0.04–0.12)

Midsize

4390 (9%)

25.3

1.1 (1.0–7.5)

0.04 (0.04–0.06)

Large

42,457 (88%)

−584.2 (−937.9 to −222.1)

0.3 (0.2–0.6)

−6.8 (−10.9 to −2.6)

Total

48,435

−505.8 (−817 to −185)

0.7 (0.4–1.8)

−6.7 (−10.8 to −2.4)

  1. The range within the bracket represents a 95% Confidence Interval. CO2 flux from midsize lakes has limited data and thus no confidence interval.
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