Study on the character of climate warming and northward movement of winter rapeseed in dried and cold areas in Northwest China
The study on living through the winter of Winter Rapeseed in different area was conducted for many years. Using the data including mean monthly temperature, highest temperature, lowest temperature, accumulated temperature of more than 0℃, 10℃,and negative accumulated temperature for less than 0℃ from 1961 to 2005 in Northwest, China were collected to analyze response of climate warming on heat resource and northward movement of Winter Rapeseed, and the the relationship between survival rate and meteorologic factors. The results showed that mean monthly temperature, highest temperature, lowest temperature, accumulated temperature more than 0℃, 10℃ from 1987 to 2005 were significantly higher than that from 1961 to 1986, especially the increment of the lowest temperature in winter, and the lowest temperature rising played a main role in climate warming over Northwest China. The negative accumulated temperature less than 0℃ reduced obviously. As the trends of climate change appeared warming since the late 1980s in Northwest China, thermal resource increased, planting areas of Winter Rapeseed were expanded to northward about 1000 km, altitude from 1000 m to 1500, even to 2300 m, and was extend from 35°30′to 39°46′.The study showed that it was possible for practicing winter rapeseeds production in dried and cold areas in Northwest China and would play an important role in the improvement of ecotype environment and the construction of adjusting agriculture environment system.
Northwest China Climate Warming Winter Rapeseed Northward movement
WANG Heling WANG Runyuan LU Dengrong NIU Junyi SUN Wancang
Institute of Arid Meteorology, CMA, Key Laboratory of Arid Climate Change and Reducing Disaster, Key College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
1228-1231
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）