【摘要】 呼和浩特市是我国北方干旱半干旱地区粮食主产区一,农业用水量变化关系着区域粮食生产与水资源可持续利用状况,通过累积距平法和主成分分析对2000-2015年呼和浩特市农业用水变化特征及其影响因素研究得出以下结论:(1)呼和浩特市农业用水量整体呈上升趋势,多年平均农业用水量为6.96亿m~3。(2)降水的偏少和气候的干旱导致了2005-2007年农业用水量远远大于其他年份。(3)呼和浩特市农业用水量主要受到灌溉面积、农业生产水平、气象条件、种植结构的影响。(4)有效灌溉面的变化趋势与农业用水变化趋势基本相一致;农业生产水平的提高对农业用水量的促进作用要大于其抑制作用;降水量与农业用水量呈现负相关作用,年均气温则呈现正相关作用;种植结构影响与农业用水量之间关系并不明确。更多还原

【Abstract】 Hohhot is one of the main grain producing areas in the arid and semi-arid areas in northern China.The change of agricultural water use is related to the sustainable utilization of grain production and water resources in the region.Through the accumulated anomalies and principal component analysis,The study on the characteristics of agricultural water use and its influencing factors concluded as follows:(1) The agricultural water use in Hohhot is generally on the rise.The average agricultural water consumption for many years is 696 million m3.(2) Precipitation is low and the climate drought caused the agricultural water consumption in 2005-2007 is far greater than other years.(3) The agricultural water consumption in Hohhot is mainly affected by irrigated area,agricultural production level,meteorological conditions and planting structure.(4) The trend of effective irrigated surface basically agrees with that of agricultural water use.The improvement of agricultural production has more effect on the agricultural water consumption than the inhibitory effect.The precipitation has a negative correlation with the agricultural water consumption.The average annual temperature It showed a positive correlation; the relationship between planting structure and agricultural water use was not clear.更多还原