| 保定市无霜期的气候特征分析 |
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| 引用本文： | 李玉娥,高万泉,韩艳君.保定市无霜期的气候特征分析[J].中国农学通报,2015,31(26):210-215. |
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| 作者姓名： | 李玉娥 高万泉 韩艳君 |
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| 作者单位： | (;1.河北省保定市气象局,河北保定 071000；;2.河北省蠡县气象局,河北蠡县 071400） |
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| 基金项目： | 基金项目：河北省气象局科研发展基金项目“农业气象预报服务系统研究”(13ky35)。 |
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| 摘 要： | 为了充分了解保定地区无霜期的气候特征，为农业气象服务提供可靠依据，利用保定市13个气象站的观测资料，详细分析保定市近50多年霜的分布特征和变化趋势。结果表明：保定市初终霜日、无霜期的分布具有明显的地域特征，西北部山区的终霜日期明显晚于平原地区，初霜日期明显早于平原地区。保定各地的无霜期长度相差很大，顺平无霜期最长，为194天，西北部山区的涞源无霜期最短，只有139天，二者相差达55天。保定绝大多数站点终霜日提前，初霜日推迟，无霜期增长，涞源无霜期增长趋势比平原更加明显，气候倾向率达5.84 d/10 a。保定地区平均无霜期增长率3.98 d/10 a，是终霜日提前、初霜日延后共同作用的结果，而终霜日提前对无霜期增长的贡献更大些。
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| 关 键 词： | 威百亩 威百亩 土壤 微生物数量 酶活性 |
| 收稿时间： | 4/1/2015 12:00:00 AM |
| 修稿时间： | 2015/5/24 0:00:00 |
Analysis of the Climatic Characteristics of Frost-free Period in Baoding City |
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| Li Yu’e,Gao Wanquan and Han Yanjun.Analysis of the Climatic Characteristics of Frost-free Period in Baoding City[J].Chinese Agricultural Science Bulletin,2015,31(26):210-215. |
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| Authors: | Li Yu’e Gao Wanquan and Han Yanjun |
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| Institution: | (;1.Baoding Meteorological Bureau, Baoding Hebei 071000;2.Lixian County Meteorological Bureau, Lixian Hebei 071400) |
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| Abstract: | The paper aims to fully understand the climate characteristics of frost-free period in Baoding Area, and provide a reliable basis for agricultural meteorological service. The author analyzed the distribution characteristics and changing trend of frost in Baoding in recent 50 years based on the observation data from 13 weather stations in Baoding. The results indicated that in Baoding Area, the first frost, last frost and frost-free period had obvious geographical distribution characteristics. The last frost date of the northwest mountainous area was later than that of the plain area, and the first frost date was earlier in the plain area. The length of frost-free period varied greatly across Baoding. Shunping’s frost-free period, which lasted 194 days, was the longest in Baoding, while the shortest was 139 days, which was in Laiyuan that lied in the mountainous area of the northwest Baoding. There was a big difference of 55 days between the two. For most weather stations in Baoding, the frost-free period had become longer with delayed first frost and earlier last frost. This prolongation of frost-free period is more obvious in Laiyuan, whose climate tendency rate was 5.84 d/10 a. The prolongation was the coordinated effect of delayed first frost and earlier last frost. Moreover, earlier last frost contributed more to the prolongation of frost-free period than delayed first frost. |
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| Keywords: | first and last frost dates frost-free period temporal and spatial distribution linear trend |
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