摘要
基于1962—2011年逐月气象资料,假定温度升高1～3℃,采用Penman-Monteith公式和单作物系数法分析计算淮河区多年平均ET0和冬小麦、夏玉米、水稻作物需水量,探讨淮河区多年平均ET0和作物需水量变化特征。结果表明,随着温度的升高,多年平均ET0的区域差异缩小;温度升高3℃时,区域内多年平均ET0大幅度增加,远高于温度升高1～2℃时;温度升高2～3℃时,作物需水量较为敏感区域主要集中在信阳、蚌埠、徐州一带,而山东半岛沿海诸河、沂沭泗河、淮河下游(洪泽湖出口以下)二级区大部分区域对温度响应不明显;夏玉米与冬小麦作物需水量变化特征较为相似;当温度增加3℃时水稻需水增量远大于冬小麦与夏玉米。
According to the monthly meteorological data from 1962 to 2011, the average annual ETo and crop water requriement of winter wheat, summer maize and rice were calculated and analyzed in Huaihe river basin using Penman-Monteith formula and single crop coefficient approach assuming that temperature increased by 1-3℃, and their variation characteristics were also discussed. The results showed that the average annual ETo in the different areas reduced with the temperature rising. When the temperature increased by 3 ℃, the average annual ETo in the Huaihe river basin would increase largely, which was much higher than those of temperature increasing by 1 ~2℃. Crop water requirement was more sensitive in some regions such as Xinyang, Bengbu, Xuzhou, but it was not sensitive to the temperature response in other areas, such as the coastal river of Shandong peninsula, Yishusi river and the downstream of Huaihe river （down outlet of Hongzehu） when the temperature increased by 2~3 ℃. Variation characteristics of summer maize and winter wheat were similar under the same situation. The increment of rice water requirement was much higher than ones of winter wheat and summer maize when the temperature increased by3℃.
出处
《灌溉排水学报》
CSCD
北大核心
2013年第5期114-117,共4页
Journal of Irrigation and Drainage
基金
国家科技支撑计划项目(2012BAC19B03)
国家自然科学基金项目(51009065
51279063)
关键词
气候变化
多年平均
作物需水量
淮河区
变化特征
climatic change
the average annual ET0
crop water requiriement
the Huaihe river basin
variation characteristic
