| 楼俊伟,张 鑫,王可欣,王智楷.1951-2016年秦巴山区霜期变化的时空特征分析[J].沙漠与绿洲气象,2019,13(5):82~88 |
| 1951-2016年秦巴山区霜期变化的时空特征分析 |
| Analysis of Temporal and Spatial Characteristics of Frost Period Changes in Qinba Mountain area during 1951-2016 |
| 投稿时间：2019-03-19 修订日期：2019-06-16 |
| DOI：10.12057/j.issn.1002-0799.2019.05.012 |
| 中文关键词: 秦巴山区 初、终霜日 霜期 时空分布 M-K突变检验法 Cressman插值法 |
| 英文关键词:Qinling-Daba (Qinba) Mountains region First/ Last frost date Frost period Temporal and Spatial Distribution Altitude Mann-Kendall abrupt change test Cressman Interpolation |
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| 中文摘要: |
| 依据中国气象数据共享网所提供的秦巴山区96个气象站点1951-2016年逐日最低气温数据，利用一元线性回归、M-K突变检验法和Cressman插值法分析了初、终霜日和霜期变化的时空特征，并对终霜日和霜期的变化趋势及其与海拔高度的关系进行了分析，结果表明：在时间变化上，秦巴山区平均初霜日呈现出推迟的趋势，且在1960年左右发生了显著突变，而平均终霜日则与之相反，表现出提前的趋势，平均霜期也呈现出显著的减小趋势，且在20世纪60年代中期至70年代末期间表现的十分明显；空间变化上，秦巴山区初霜日和霜期呈现出较大的南北差异，而终霜日则表现为较大的东西差异；在与海拔分布的关系上，秦巴山区部分地区终霜日和霜期的变化趋势有明显的海拔依赖性，表现为西部和中东部地区终霜日的变化趋势随海拔高度的增加而减小，北部地区霜期的变化趋势随着海拔高度的增加而减小。 |
| 英文摘要: |
| According to the daily minimum temperature data(1951-2016) of 96 meteorological stations in Qinba Mountain Area provided by China Meteorological Data Sharing Network, the spatiotemporal variation of initial(final) frost days, frost period and the relationships with attitude were analyzed by linear regression, MK mutation test and Cressman interpolation. The results indicate that for the time series, the average first frost day in Qinba Mountain area presents a delayed trend, and there was a significant change around 1960; While the average final frost day is opposite, showing an advance trend; The average frost period also shows a significant reduction trend, and it’s very evident during the mid-1960s to the late 1970s. For the spatial distribution, the first frost days and frost periods in Qinba Mountain area show a large difference between the north and the south, while the final frost day shows a large difference between the east and the west.For the altitude distribution, the frost and frost periods in some areas of Qinba Mountain have obvious altitude dependence, which shows that the frosty day in the western and central eastern regions decreases with the increase of altitude, while in the northern region decreases with increasing altitude. |
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