極端氣候變化及其對(duì)水稻氣候產(chǎn)量影響的實(shí)證分析——以湖北省為例
發(fā)布時(shí)間:2018-12-14 10:43
【摘要】:為考察湖北極端天氣事件的時(shí)空變化,采用1980—2014年逐日氣候數(shù)據(jù),并利用實(shí)證分析法研究了極端氣候?qū)λ練夂虍a(chǎn)量的影響。研究表明:1)湖北極端降水量和降水天數(shù)均呈下降趨勢(shì),極端降水事件由東向西、由南向北遞減。2)極端高溫呈上升趨勢(shì),表現(xiàn)為極端高溫天數(shù)和強(qiáng)度增加。鄂北、鄂西易發(fā)生極端高溫事件。3)極端氣候類因素對(duì)水稻氣候產(chǎn)量具有負(fù)向影響,其中,最低氣溫的極小值每增加1%將會(huì)使水稻的氣候產(chǎn)量降低0.197%。白天極端高溫天數(shù)對(duì)水稻氣候產(chǎn)量也具有抑制作用,其每增加1%將會(huì)使水稻氣候產(chǎn)量降低0.046%。因此,應(yīng)加強(qiáng)湖北省極端天氣事件易發(fā)區(qū)在水稻生長(zhǎng)期內(nèi)的氣候監(jiān)測(cè)和防范。
[Abstract]:In order to investigate the temporal and spatial variation of extreme weather events in Hubei Province, daily climatic data from 1980 to 2014 were used to study the effect of extreme weather on rice climatic yield by using empirical analysis. The results show that: 1) the extreme precipitation and the days of precipitation in Hubei show a downward trend, and the extreme precipitation events decrease from east to west and from south to north. 2) the extreme high temperature shows an upward trend, which shows that the days and intensity of extreme high temperature increase. Extreme climatic factors have a negative effect on the climatic yield of rice, in which the minimum value of minimum temperature increases by 1% will reduce the climatic yield of rice 0.197. The days of extreme high temperature during the day also inhibited the climatic yield of rice, and each increase of 1% could reduce the climatic yield of rice by 0.046%. Therefore, we should strengthen the climatic monitoring and prevention of extreme weather events in the rice growing period in Hubei Province.
【作者單位】: 華中農(nóng)業(yè)大學(xué)經(jīng)濟(jì)管理學(xué)院;湖北農(nóng)村發(fā)展研究中心;
【基金】:國(guó)家自然科學(xué)基金國(guó)際合作項(xiàng)目(NSFC-CGIAR,71461010701);國(guó)家自然科學(xué)基金資助項(xiàng)目(71273103) “萬(wàn)人計(jì)劃”青年拔尖人才支持計(jì)劃 華中農(nóng)業(yè)大學(xué)自主科技創(chuàng)新基金(2012YQ003) 中央高;究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)基金資助(2662015PY093)
【分類號(hào)】:S42;S511
本文編號(hào):2378475
[Abstract]:In order to investigate the temporal and spatial variation of extreme weather events in Hubei Province, daily climatic data from 1980 to 2014 were used to study the effect of extreme weather on rice climatic yield by using empirical analysis. The results show that: 1) the extreme precipitation and the days of precipitation in Hubei show a downward trend, and the extreme precipitation events decrease from east to west and from south to north. 2) the extreme high temperature shows an upward trend, which shows that the days and intensity of extreme high temperature increase. Extreme climatic factors have a negative effect on the climatic yield of rice, in which the minimum value of minimum temperature increases by 1% will reduce the climatic yield of rice 0.197. The days of extreme high temperature during the day also inhibited the climatic yield of rice, and each increase of 1% could reduce the climatic yield of rice by 0.046%. Therefore, we should strengthen the climatic monitoring and prevention of extreme weather events in the rice growing period in Hubei Province.
【作者單位】: 華中農(nóng)業(yè)大學(xué)經(jīng)濟(jì)管理學(xué)院;湖北農(nóng)村發(fā)展研究中心;
【基金】:國(guó)家自然科學(xué)基金國(guó)際合作項(xiàng)目(NSFC-CGIAR,71461010701);國(guó)家自然科學(xué)基金資助項(xiàng)目(71273103) “萬(wàn)人計(jì)劃”青年拔尖人才支持計(jì)劃 華中農(nóng)業(yè)大學(xué)自主科技創(chuàng)新基金(2012YQ003) 中央高;究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)基金資助(2662015PY093)
【分類號(hào)】:S42;S511
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