The change character of monsoon rainband over Heilongjiang Province for the past 40 years

在中国的 Heilongjiang 省的降水从 1960 ～ 2000 稍微增加了。采用方法由 Arthur N 求婚了。Samel，我们分开了季风雨线雨；计算起始；每年的季风雨线的最后的日期；每个车站。为句号 1960 2000，在 Heilongjiang 省的年度降水的变化，与 2.229 公里的一个增加的趋势每十年，不是重要的；持续时间；全部的季风雨显著地减少了，与每十年的 6.9 白天的一个减少的趋势；17.5 公里每十年独立。那个变化来自早为句号离开夏天季风雨线的日期 1960 1975；为句号的夏天季风雨线的以后的到达日期 1990 2000。变弱夏天季风做它的贡献到年度降水显著地减少了，与每十年的 4.4 % 的一个减少的趋势。

Precipitation in Heilongjiang Province of China increased slightly from 1960 to 2000. Adopting the method proposed by Arthur N. Samel, we separated monsoon rainband rain and calculated the initial and final date of monsoon rainband of each year and each station, For the period of 1960-2000, the change of annual precipitation in Heilongjiang Province, with an increasing trend of 2.229 mm per decade, is not significant; the duration and total monsoon rain decreased significantly, with a decreasing trend of -6.9 day per decade and -17,5 mm per decade separately. That change comes from early leaving date of summer monsoon rainband for the period of 1960- 1975 and later arriving date of summer monsoon rainband for the period of 1990-2000, The weakening of summer monsoon makes ils contribution to the annual precipitation decreased significantly, with a decreasing trend of 4.4 % per decade.