發(fā)布時(shí)間：2018-01-27 00:59

  本文關(guān)鍵詞： 春玉米 氣象干旱對(duì)農(nóng)業(yè)影響評(píng)估綜合指數(shù) 氣象干旱致災(zāi)因子　出處：《蘭州大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年01期 　論文類型：期刊論文

【摘要】：利用四川省1961-2014年147個(gè)地面氣象站逐日觀測資料與四川省春玉米觀測資料,運(yùn)用氣象干旱對(duì)農(nóng)業(yè)影響評(píng)估綜合指數(shù),建立四川省春玉米生育期氣象干旱致災(zāi)因子危險(xiǎn)性模型,研究了四川省春玉米播種-出苗期、拔節(jié)-孕穗期、抽雄開花-吐絲期、乳熟-完熟期及全生育期氣象干旱致災(zāi)因子危險(xiǎn)性空間分布特征.結(jié)果表明:春玉米需水關(guān)鍵期發(fā)生特、重、中、輕概率的空間分布不同;春玉米抽雄開花-吐絲期氣象干旱致災(zāi)因子危險(xiǎn)性較大,拔節(jié)-孕穗期次之,播種-出苗期較小;春玉米全生育期氣象干旱致災(zāi)因子危險(xiǎn)性盆西北至資陽北部較高,高原西南部河谷地帶次之,盆地西南部、涼山州東北部較低.
[Abstract]:Based on the daily observation data of 147 ground weather stations in Sichuan Province from 1961 to 2014 and the observation data of spring maize in Sichuan Province, the comprehensive index of impact assessment of meteorological drought on agriculture was used. The risk model of meteorological drought disaster factors in spring maize growth period in Sichuan Province was established, and the sowing and emergence stage, jointing and booting stage, flowering and silking stage of spring maize in Sichuan Province were studied. The spatial distribution characteristics of meteorological drought disaster risk factors in milk-mature and full maturity periods. The results showed that the spatial distribution of special, heavy, medium and light probability of spring maize water demand was different. The risk of meteorological drought in spring maize was higher than that in jointing and booting stage, and that in sowing and seedling stage was smaller. The risk factors of drought in spring maize are higher from northwest to north of Ziyang, followed by valley in southwest plateau, lower in southwest basin and northeast of Liangshan state.
【作者單位】： 成都信息工程大學(xué)大氣科學(xué)學(xué)院;中國氣象局蘭州干旱氣象研究所;
【基金】：干旱氣象科學(xué)基金項(xiàng)目(IAM201304) 國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973計(jì)劃)項(xiàng)目(2013CB430206) 成都信息工程大學(xué)科研基金項(xiàng)目(KYTZ201305) 四川省軟科學(xué)研究項(xiàng)目(2013ZR0081)
【分類號(hào)】：S423;S513
【正文快照】： 全球變暖導(dǎo)致極端天氣事件頻繁發(fā)生,災(zāi)情加重,災(zāi)害風(fēng)險(xiǎn)評(píng)估作為一種化被動(dòng)抗災(zāi)、救災(zāi)為主動(dòng)防災(zāi)、減災(zāi)的有效方法,越來越受重視.史培軍m認(rèn)為自然災(zāi)害是致災(zāi)因子、孕災(zāi)環(huán)境、承災(zāi)體共同作用的結(jié)果,許多學(xué)者基于這3因素進(jìn)行了災(zāi)害風(fēng)險(xiǎn)評(píng)估及區(qū)劃i2—71.張繼權(quán)等[8]引人防災(zāi)減災(zāi)

【參考文獻(xiàn)】

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1 張紅麗;張強(qiáng);劉騫;柴藝淳;閆昕e，

本文編號(hào)：1467102