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      氣候變化研究進(jìn)展 ?? 2008, Vol. 4 ?? Issue (002): 90-094.

      ? 研究短論 ? 上一篇    下一篇

      氣候變暖對(duì)寧夏引黃灌區(qū)春小麥生產(chǎn)的影響

      劉玉蘭 張曉煜 劉娟 亢艷莉   

      1. 寧夏銀川市氣象局
      • 收稿日期:2007-08-13 修回日期:2007-11-04 出版日期:2008-03-31 發(fā)布日期:2008-03-31
      • 通訊作者: 劉玉蘭

      Impact of Climate Change on Spring Wheat Yield in Yellow River Irrigation Region of Ningxia

        

      • Received:2007-08-13 Revised:2007-11-04 Online:2008-03-31 Published:2008-03-31

      摘要: 對(duì)寧夏引黃灌區(qū)10個(gè)觀測(cè)站1961-2004年春小麥生長(zhǎng)發(fā)育期(3月上旬至7月上旬)的氣溫進(jìn)行分析,結(jié)果表明:寧夏引黃灌區(qū)春小麥生長(zhǎng)期的氣候明顯變暖。t檢驗(yàn)結(jié)果表明,春小麥生長(zhǎng)發(fā)育期日平均氣溫的突變發(fā)生在1989年,突變后的氣溫比突變前升高了0.7℃。在春小麥生長(zhǎng)發(fā)育各階段,氣溫都有所升高,但沒有超出春小麥生長(zhǎng)發(fā)育的適宜溫度范圍。引黃灌區(qū)春小麥的溫度敏感系數(shù)在3月中旬至4月上旬及5月上旬至6月上旬為正值,這兩個(gè)時(shí)段的氣候變暖有利于春小麥生產(chǎn);6月中旬至7月上旬及4月中下旬溫度敏感系數(shù)為負(fù)值,這兩個(gè)時(shí)段的氣候變暖不利于春小麥生產(chǎn)。總體而言,氣候變暖對(duì)春小麥單產(chǎn)的貢獻(xiàn)為-2.6%。

      關(guān)鍵詞: 引黃灌區(qū), 寧夏, 氣候變暖, 春小麥

      Abstract: Temperatures from early March to early July in 1961-2004, at 10 stations in the Yellow River irrigation region of Ningxia were analyzed. The results show that the temperature during the growing season of spring wheat increased obviously. The t-test indicates that the temperature abrupt change occurred in 1989 with a rise of 0.7℃. Over various phenological stages of spring wheat, the temperature increased, but it didn't exceed the suitable range. The temperature-sensitive index of spring wheat was positive from middle March to early April and from May to early June, therefore the climate warming over these periods was favorable to wheat growth. The temperature-sensitive index was negative from middle June to early July and from middle to late April, thus the climate warming over these periods was unfavorable to wheat growth. Overally, the contribution of climate warming to wheat yield was -2.6%.

      Key words: Yellow River irrigation region, Ningxia, climate warming, spring wheat

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