Table 3: The relevancies between each meteorological element and runoff in the Dongjiang basin.

Basin units Basin scope Gauge stations Temperature Precipitation Evaporation Sunlight Humidity

D1 Upper Longchuan 0.4884 0.5503 0.4688 0.449 0.4702
Rank 2 1 4 5 3

D2 MidstreamHeyuan 0.4857 0.5389 0.4659 0.4313 0.4861
Rank 3 1 4 5 2

D The whole basinBoluo 0.525 0.5968 0.4883 0.4495 0.5239
Rank 2 1 4 5 3