氣象條件對浙江省泡桐物候期的影響研究

doi:10.3969/2013jms.0033

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氣象條件對浙江省泡桐物候期的影響研究
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                        10.3969/2013jms.0033
                    
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基金項(xiàng)目:氣候變化專項(xiàng)"典型城市群區(qū)域氣候變化評估報告"(CCSF201202)

Influence of weather conditions on paulownia phenological period in Zhejiang province

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利用氣候資料及泡桐物候期數(shù)據(jù),分析了浙江省泡桐關(guān)鍵生育期與相關(guān)氣象要素的關(guān)系,研究了泡桐開花展葉前相關(guān)氣候特征,探討了冷空氣對泡桐秋季物候期的可能影響.從統(tǒng)計值的關(guān)系來看,其物候期主要取決于氣溫及≥10 ℃有效積溫的高低,降水量的影響其次,日照時數(shù)的影響最小.泡桐物候期對當(dāng)季的氣溫條件非常敏感,降水對其開花、展葉的影響有滯后作用.泡桐開花和展葉始期前3個月的≥10 ℃有效積溫一般分別要達(dá)到200 ℃·d和300 ℃·d以上;由落葉末期至下一年開花和展葉始期的≥10 ℃有效積溫也分別要基本達(dá)到200 ℃·d和300 ℃·d以上;開花展葉前3個月的降水量和日照時數(shù)一般在230 mm和在210 h以上.泡桐秋季物候期前7 d內(nèi)的冷空氣,特別是中等強(qiáng)度以上的冷空氣對其影響很大,落葉前的冷空氣促使泡桐開始落葉,落葉開始后,冷空氣將加速落葉.開花末期前2周的冷空氣,在一定程度上促進(jìn)了泡桐花期的結(jié)束.

Abstract:

The meteorological data and paulownia phenological data are used to analyze the relationship between the paulownia phenological phases and the relative meteorological factors in Zhejiang province. In addition, the climatic features before flowering and leaf spreading are studied, and the possible effects of cold air on the paulownia phenological phase in autumn are discussed. The relationship between the paulownia phenological phase and the annual average meteorological elements shows that the paulownia phenological phase depends mostly on the temperature and ≥ 10 ℃ effective accumulated temperature, then the precipitation, and finally the sunshine hours. The paulownia phenological phase is very sensitive to the current temperature, and precipitation has a lagging effect on its flowering and leaf spreading. The ≥ 10 ℃ accumulated temperatures should reach 200 ℃·d and 300 ℃·d for three months before flowering and leaf spreading and the period from leaf falling ending to the next flowering and leaf spreading. Moreover, the accumulated precipitation and sunlight should exceed 230 mm and 210 h currently. The cold air within 7 days, especially the one colder than moderate intensity, has a significant impact on the autumn paulownia phenological period, that is, the cold air before the leaf falling will reinforce the defoliation; after the leaf falling, it will accelerate the defoliation; cold air, in two weeks during flowering, will bring the flowering to end in some extent.

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郁珍艷,高大偉,吳利紅,范廣洲.氣象條件對浙江省泡桐物候期的影響研究.氣象科學(xué),2014,34(6):666-671 YU Zhenyan, GAO Dawei, WU Lihong, FAN Guangzhou. Influence of weather conditions on paulownia phenological period in Zhejiang province. Journal of the Meteorological Sciences,2014,34(6):666-671

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收稿日期:2013-01-09
最后修改日期:2013-04-13
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