氣候變化研究進展 ?? 2009, Vol. 5 ?? Issue (00): 73-77.
? Impacts and Adaptation ? 上一篇 下一篇
Impact of Climate Change on Spring Wheat Yield in Yellow River Irrigation Region of Ningxia
Liu Yulan 1, 2, Zhang Xiaoyu1, Liu Juan2, Kang Yanli1
- 1 Ningxia Key Laboratory of Meteorological Disaster Prevention and Reduction, Yinchuan 750002, China; 2 Yinchuan Meteorological Bureau, Yinchuan 750002, China
Impact of Climate Change on Spring Wheat Yield in Yellow River Irrigation Region of Ningxia
Liu Yulan 1, 2, Zhang Xiaoyu1, Liu Juan2, Kang Yanli1
- 1 Ningxia Key Laboratory of Meteorological Disaster Prevention and Reduction, Yinchuan 750002, China; 2 Yinchuan Meteorological Bureau, Yinchuan 750002, China
摘要： Temperatures from early March to early July during 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 a temperature abrupt change occurred in 1989 with an average rise of 0.7℃. Over various growth 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 the two periods was favorable to wheat growth; however it was negative from middle June to early July and from middle to late April, thus the climate warming over the two periods was unfavourable to wheat growth. Overally, the contribution of climate warming to spring wheat yield was -2.6%.