Hydrometeorological factors M-K O-L C-A Period
Runoff 1977 1995 1982, 1992 Baseline period: 1971–1981
Precipitation 1984, 1989, 1995 1982 1987, 1993 Change period Ⅰ: 1982–1991
Temperature 1990, 1992, 1994 1984 1985 Change period Ⅱ: 1992–2000