摘要
随着人类活动对于流域水循环过程影响的加深,水资源演化机制发生了深刻的变化,其中农业灌溉用水是最为重要的影响因素。研究流域农业灌溉用水模拟和分析方法,对于研究水资源评价、水资源合理配置具有重要的意义。基于二元流域水循环模式,采用联合国粮农组织推荐的Penman-Monteith公式,利用已有的气候和作物资料计算了松辽流域30个三级区21a逐日的参考作物需水量和逐旬的综合灌溉需水量,结合气象观测和用水统计资料对模拟结果进行了分析和验证。结果表明:松辽流域参考作物需水量ET0呈不显著增加的趋势,只有西辽河下游、柳河口以上、绥芬河3个三级区的ET0呈不显著减小的趋势,其他27个三级区ET0均呈增加趋势,其中3个三级区呈显著增加趋势,逐年灌溉需水量总体趋势表现为显著增加。
As human activities deepen the influence of the process of water cycle, the water resources evolutive mechanism has under- gone profound changes, and agricultural irrigation is the most important factor. An simulation and analysis of agricultural irrigation in the basin is significant to the study of water resources assessment, water resources rational allocation. Therefore, this paper is based on the dual basin water cycle model, and recommended by the FAO Penman-Monteith equation, using the existing information on climate and crop calculated Songliao Basin 30 District of Grade 3 for 21 years daily reference crop water requirements, and by ten days of the comprehensive irrigation water demand, combining meteorological observations and water-use statistics, the simulation results are analyzed and verified. The results show that the water requirement of crops in Songliao Basin ETo increased unobriously, only in the West Liaohe River, the lower reach of Liuhekou and Suifenhe in the trend of reducing, hut the other 27 districts of Grade 3 of ET0 shows an increase, of which 3 districts of Grade 3 of ET0 show a significant increasing trend, and in annual irrigation water demand in the overall trend show a significant increase.
出处
《中国农村水利水电》
北大核心
2013年第6期76-80,共5页
China Rural Water and Hydropower
基金
国家自然科学基金创新研究群体基金项目(50721006)
关键词
松辽流域
灌溉用水
模拟
分析
Songliao Basin
irrigation
simulation
analysis
