摘要
基于2000-2014年西安市统计年鉴、陕西省水资源公报以及陕西省水利统计年鉴等相关资料,采用能值分析基本理论分析计算了西安市2000-2014年的灌溉效益分摊系数以及灌溉用水产生的效益值,以此为基础分析了灌溉水效益分摊系数以及效益值的时间变化过程,同时,采用回归分析法分析了效益分摊系数的影响因素。结果表明:近15 a来西安市的农业灌溉效益分摊系数多年平均值为0.34,并且在时间上总体呈下降趋势;单方灌溉水效益随着时间变化持续增大,总效益的变化趋势与单方灌溉水效益基本一致;灌溉用水、降水、人力投入、农药化肥施用、机械动力投入等是影响西安市灌溉用水效益分摊系数的主要因素,人力投入及灌溉用水与灌溉效益分摊系数存在着正相关关系,其他因子却与农业灌溉分摊系数有负相关关系。
According to some related materials such as the Statistical Yearbook of Xi＇an, Water Resources Bulletin of Shaanxi Province and Statistical Yearbook of Shaanxi Province Water Conservancy, the basic theory of energy value analysis was used in this paper to calculate the irrigation benefit sharing coefficient and the benefit value of irrigation water of Xi＇an from 2000 to 2014 as well as their temporal variations. Meanwhile, the regression analysis was applied to analyze the influence factors of the benefit sharing coef- ficient. The results showed that, the multi-year average value of annual agricultural irrigation benefit sharing coefficient in Xi＇an was 0.34 in the past 15 years and gradually decreased with time. The unilateral irrigation water benefit increased continuously with the time change, the change of total benefit was basically consistent with the benefit of unilateral irrigation water benefit. Irrigation water, precipitation, human input, pesticide and fertilizer application, mechanical power input were the main factors that affected the irrigation benefit sharing coefficient of irrigation water in Xi＇an, of which, there was a positive correlation between human input and irrigation benefit sharing coefficient, and there were had negative eorrelations between the other factors and it.
出处
《水资源与水工程学报》
CSCD
2017年第1期244-248,共5页
Journal of Water Resources and Water Engineering
基金
国家自然科学基金项目(51479262)
关键词
灌溉效益分摊系数
能值分析法
时间变化
单方灌溉水效益
效益分析
irrigation benefit sharing coefficient
energy value analysis method
time variation
unilateral irrigation water benefit
benefit analysis
