Fig 1.
Spatial distribution of DOC from the three river basins in China.
The different background colours represent the Yellow, Yangtze and Pearl River basins, respectively. Red solid circle represents the location of the sampling stations in the three river basins. The description of the serial number of each site used in this analysis can be found in the S2 Table.
Table 1.
Characteristics of three rivers in China.
Table 2.
Concentrations and flux of DOC exported to the ocean (annual mean±SD) by three rivers in China.
Fig 2.
Correlation between the natural logarithm of DOC flux and concentrations and discharge from the three rivers.
Fig 3.
Seasonal and temporal variations of monthly discharge, DOC concentrations and flux from the mainstream and tributary hydrology stations along the Yangtze River.
The dashed line represents the interval from year to year. (Date: mm–yy)
Fig 4.
Seasonal and temporal variations of monthly discharge, DOC concentrations and flux along the mainstream of the Yellow River.
The dashed line represents the interval from year to year. (Date: mm–yy)
Fig 5.
Seasonal and temporal variations of monthly discharge, DOC concentrations and flux from the main and tributary hydrology stations along the Pearl River.
The dashed line represents the interval from year to year. (Date: mm–yy)
Fig 6.
Variation of the natural logarithm of monthly DOC concentrations and flux on monthly temperature and precipitation in the Yangtze River, Yellow River and Pearl River catchments.
Fig 7.
The relationship between DOC concentrations and annual average NPP in the Yangtze, Pearl and Yellow River catchments.
The dotted lines represent the 95% confidence interval.
Table 3.
Comparison of flux of DOC exported to the ocean among the three Chinese rivers.