水足迹视角下的宁夏中卫市农业水资源利用评价

发布时间：2018-05-31 19:03

本文选题：水足迹 + 农产品　；参考：《兰州大学学报(自然科学版)》2015年05期

【摘要】：采用水足迹对宁夏中卫市2006-2011年7类农产品的虚拟水足迹进行识别,结合脱钩系统耦合理论对农业水资源利用情况与农业经济增长间的关系进行评价.结果表明:中卫市农作物产品的绿水、蓝水、灰水足迹和总虚拟水足迹呈逐年递增趋势,平均增长速度最快的是灰水足迹,达到10.6%;水足迹土地密度最低值出现在2008年(28.77×10~4m~3/km~2),之后呈现递增趋势,导致水资源负荷增加;农作物产量大体呈逐年递增趋势,在种植面积未有显著变化的情况下单产增加,农业综合生产能力得到提高;农业水资源利用情况与农业经济增长间关系的扩张性"复钩"和弱"脱钩"现象有规律性,故目前的水资源利用是不可持续的,提高利用效率为重中之重.
[Abstract]:The virtual water footprint of 7 kinds of agricultural products in Zhongwei city of Ningxia from 2006 to 2011 was identified by using water footprint and the relationship between agricultural water resources utilization and agricultural economic growth was evaluated with decoupling system coupling theory. The results show that the green water, blue water, grey water footprint and total virtual water footprint of crop products in Zhongwei City are increasing year by year. The comprehensive agricultural production capacity has been improved, and the expanding "rehook" and weak "decoupling" phenomena in the relationship between the utilization of agricultural water resources and agricultural economic growth are regular, so the current utilization of water resources is not sustainable. The most important thing is to improve the utilization efficiency.
【作者单位】：兰州大学资源环境学院;
【基金】：国家环保公益性行业科研专项项目(201209034)
【分类号】：F323.213

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