浙南春茶早春霜凍的時空分布特征
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:

公益性行業(氣象)科研專項(GYHY201306037)、麗水氣候生態創新團隊項目(201512)資助


Temporal and Spatial Distribution of Early SpringFrost for Spring Tea in Southern Zhejiang
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 圖/表
  • |
  • 訪問統計
  • |
  • 參考文獻
  • |
  • 相似文獻
  • |
  • 引證文獻
  • |
  • 資源附件
  • |
  • 文章評論
    摘要:

    利用1971—2015年浙南7縣(市、區)早春(2—4月)逐日氣溫觀測資料,根據茶葉早春霜凍的氣象災害指標,采用多尺度趨勢方法分別從空間、時間分析浙南茶葉早春霜凍的氣候變化特征,并利用MannKendall檢驗驗證浙南茶葉早春霜凍的變化趨勢和突變轉折。結果表明:浙南茶葉早春霜凍發生次數較高,年均發生天數為16.8天,其中2月發生早春霜凍的可能性最高,且以輕度和重度霜凍為主。早春霜凍的空間分布結構由東南面向西北面遞增,青田縣發生早春霜凍的可能性最低,縉云縣發生的可能性最高。茶葉早春霜凍日數的長期變化趨勢表現為顯著減少,且極端最低氣溫上升趨勢明顯,即浙南茶葉早春出現低溫霜凍的可能性減小。浙南茶葉早春霜凍減少發生的突變點在20世紀80—90年代,且在21世紀初減少趨勢最為顯著。

    Abstract:

    Based on early spring (February to April) daily temperature from 7 county observation stations in the southern Zhejiang from 1971 to 2015, according to meteorological disaster indexes of early spring frost for tea, the multiscale trend method is used to analyze the temporal and spatial characteristics of early spring frost for spring tea in the southern Zhejiang and the MannKendall test is applied to verify the trend, mutations and turning of early spring frost weather. The results show that the probability of early spring frosts occurred in the southern Zhejiang is high with an annual mean of 16.8 d/a; the highest occurrence probability in February, mainly consisting of minor and severe frosts; as for the spatial distribution of early spring frost, the probability increases from southeast to northwest, the lowest in Qingtian, and the highest in Jinyun. The longterm trend of early spring frost days for spring tea shows a significant decreasing trend, and the extreme minimum temperature rose significantly, with the possibility of early spring frost reducing in the southern Zhejiang. The mutation of early spring frost reduction occurred in the 1980s and 1990s in the southern Zhejiang, and the decreasing trend was the most significant in the early 21th century.

    參考文獻
    相似文獻
    引證文獻
引用本文

姜燕敏,金志鳳,李仁忠,張育慧,余文娟.浙南春茶早春霜凍的時空分布特征[J].氣象科技,2016,44(6):1066~1070

復制
分享
文章指標
  • 點擊次數:
  • 下載次數:
  • HTML閱讀次數:
  • 引用次數:
歷史
  • 收稿日期:2015-01-21
  • 定稿日期:2016-03-01
  • 錄用日期:
  • 在線發布日期: 2016-12-26
  • 出版日期:
您是第位訪問者
技術支持:北京勤云科技發展有限公司
午夜欧美大片免费观看,欧美激情综合五月色丁香,亚洲日本在线视频观看,午夜精品福利在线
>