英语翻译“水是生命之源”,水对于一个地区的生物生存,工农业发展,生态环境都极为重要.而降水作为调节区域水资源分布的一种重
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Water is the source of the life ", water for a region of biological survival, the industrial and agricultural development, ecological environment is very important. And precipitation distribution of regional water resources as regulation is an important way, has the important meaning and significance of the climate hydrological. This paper using the dianchi lake watershed twelve meteorological site meteorological data in the dianchi lake watershed space-time distribution of rainfall characteristics of statistical analysis and data research, draw the conclusion is: the time for performance characteristics, relatively stable interannual variability, its absolute variable rate of only 32.13% in 2009 mutations, the relative change rate was 13.24%, the overall trend has certain stability. Precipitation mainly concentrated in the summer, the midsummer 7, 8 two months of precipitation rainfall throughout the year 41% of the total, good water conditions conducive to agricultural development, winter rainfall at least, only 4%, could cause drought. The summer and autumn rainfall years two seasons with the growth is on the decline, spring, winter two season precipitation is year growth with a rising trend, precipitation distribution in racing to the spring season, winter two season concentration. Years season changes in rainfall are in trend reduced year by year. Its space change characteristics in the dianchi lake watershed for twelve meteorological site of the annual precipitation change rule approximate year by year, and all declined, but the etheric huashan down trend is most obvious. With an average annual rainfall with much less north south, from northwest to southeast, by too huashan, to find him, and to the song, kunming, luquan, then to the stone forest, peace, and appropriate is good, people, including jinning, finally to ChengGong and dongchuan, present the trend of decreasing gradually, with an average annual precipitation high value on the dianchi lake watershed in the area west of high regional urbanization.

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