甘孜近60年气候生产力变化特征

Characteristics of Climate Productivity Change in Ganzi in Recent 60 Years

摘要: 为了研究甘孜气候生产力变化特征，利用1960~2019年甘孜逐日气温、降水量、日照时数和空气相对湿度等气候统计资料，采用Thornthwaite Memorial模型计算气候生产力，并通过线性倾向趋势分析、Mann-Kendall检验和小波分析，对气候生产力的年际变化趋势、突变情况和周期进行分析。结果表明：气候生产力上升趋势显著，增幅为14.38 kg/(hm²·a)/10a，且在2009年发生突变，其周期以准28a的周期振荡为主。气候生产力受到温度、降水量、日照时数和相对湿度的共同影响，随温度、降水量的增减而增减，随日照时数、相对湿度的增减而减增。

Abstract: In order to study the change characteristics of climate productivity in Ganzi, the climate statistical data of daily temperature, precipitation, sunshine duration and air relative humidity in Ganzi from 1960 to 2019 are used. The Thornthwaite Memorial model is used to calculate climate productivity, and the interannual change trend, mutation and cycle of climate productivity are analyzed through linear trend analysis, Mann-Kendall test and wavelet analysis. The results show that the climate productivity has a significant upward trend, with an increase of 14.38 kg/(hm²·a)/10a, and a sudden change occurred in 2009, with a period of quasi-28-year. Climate productivity is affected by temperature, precipitation, sunshine duration and relative humidity. It increases or decreases with the increase or decrease of temperature and precipitation, and decreases with the increase or decrease of sunshine duration and relative humidity.