1968年~2018年青海省班玛地区不同降雪量级的时空特征分析

Analysis of Time-Space Characteristics of Different Precipitation Levels in Banma Area of Qinghai Province from 1968 to 2018

根据1968年~2018年青海班玛站逐日降水资料,采用线性估计方法和累积距平方法探讨了班玛地区不同量级降雪量和降雪日数的演变规律,结果表明:1968年~2018年班玛地区小雪日数呈缓慢下降的趋势,中雪日数和大雪日数呈缓慢上升的趋势;年降雪量变化总体呈缓慢上升的趋势,不同量级降雪量总体呈缓慢上升的趋势。分析结果对研究班玛地区生态环境的变化以及应对气候变化带来的影响具有参考价值。

According to the daily precipitation data of Qinghai Banma Station from 1968 to 2018, the evolution of snowfall and snowfall days of different magnitudes in Banma area was discussed by linear estimation method and cumulative distance leveling method. The results showed that the number of light snow days in Banma area from 1968 to 2018 had a slow downward trend, and the number of medium snow days and heavy snow days had a slow upward trend. The overall change in snowfall in Banma area from 1968 to 2018 showed a slow upward trend, and the overall snowfall of different magnitudes showed a slow upward trend. The results of the analysis have reference value for studying the changes in the ecological environment of Banma area and responding to the impact of climate change.