It account about for 80% in one year variation of actual ET in Hai Basin, when cover from the 7~(th) to 19~(th) half month in year, being second half April to first half October.

• 研究结果表明，年内实际蒸散过程集中在第七半月至第十九半月，即每年的四月下半月至十月上半月，五个月的蒸散量占全年蒸散的比重达80%25左右；