降水分析，包含距平，趋势，突变，可以用于简单的分析-precipitation analysis

用于分析气温、降水和水质多年来的趋势变化了，并能找到突变点-For the analysis of temperature, precipitation and water quality trends changed over the years, and to find mutations

Mann-Kendall检验不需要样本遵循一定的分布，也不受少数异常值的干扰，用来分析降水、径流、气温和水质等要素时间序列趋势变化(The Mann-Kendall test does not require samples to follow a certain distribution and is not disturbed by a small number of outliers. It can be used to analyze the trend of time series o

用来计算降水序列的趋势及突变分析的MATLAB程序(The trend and catastrophe analysis used to calculate the precipitation sequence)

常用于分析降水、径流、气温等要素时间序列的趋势变化，其优点在于样本不需要遵循某一特定的分布，而且很少受到异常值的的干扰，计算简便。(It is often used to analyze the trend change of time series of factors such as precipitation, runoff and air temperature. Its advantage is that the sample does not need to follow a spe