麻城龜峰山古杜鵑花期滾動預(yù)報方法探討
發(fā)布時間:2018-11-29 11:43
【摘要】:利用麻城龜峰山杜鵑花海3個不同海拔高度和臨近區(qū)域自動站連續(xù)2年觀測的氣溫和物候資料,結(jié)合前期物候資料,統(tǒng)計不同高度、不同時段和不同要素的氣象條件,結(jié)果表明:杜鵑花開放的臨界溫度為日平均氣溫穩(wěn)定通過10℃,達到盛花期物候標(biāo)準(zhǔn)的積溫指標(biāo)為:1月1日起至盛花期前一日≥0℃活動積溫大于等于730℃;3月1日起至盛花期前一日≥10℃活動積溫大于等于450℃,對兩項積溫按不同高度、不同時間段進行垂直遞減率計算并作相關(guān)分析,兩因子與花期的線性相關(guān)顯著。以兩項積溫作預(yù)報因子,建立從3月底到4月底,每隔5天一次的不同時段共7個花期預(yù)報方程。利用積溫指標(biāo)結(jié)合預(yù)報方程,可對杜鵑花期進行滾動預(yù)報和精細(xì)化預(yù)報,預(yù)報效果與實況基本吻合,誤差較小。
[Abstract]:Based on the temperature and phenological data of three azaleas sea at different altitudes and adjacent areas observed for two consecutive years, combined with the previous phenological data, the meteorological conditions of different heights, different periods and different elements were calculated. The results showed that the critical temperature of azaleas blooming was that the daily average temperature passed through 10 鈩,
本文編號:2364903
[Abstract]:Based on the temperature and phenological data of three azaleas sea at different altitudes and adjacent areas observed for two consecutive years, combined with the previous phenological data, the meteorological conditions of different heights, different periods and different elements were calculated. The results showed that the critical temperature of azaleas blooming was that the daily average temperature passed through 10 鈩,
本文編號:2364903
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