...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ground water >Investigating Impacts of Climate Change on Irrigation Water Demands and Its Resulting Consequences on Groundwater Using CMIP5 Models
【24h】

Investigating Impacts of Climate Change on Irrigation Water Demands and Its Resulting Consequences on Groundwater Using CMIP5 Models

机译：使用CMIP5模型调查气候变化对灌溉水需求的影响及其对地下水的后果

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study, the impacts of climate change on crop water requirements and irrigation water requirements on the regional cropping pattern were evaluated using two climate change scenarios and combinations of 20 GCM models. Different models including CROPWAT, MODFLOW, and statistical models were used to evaluate the climate change impacts. The results showed that in the future period (2017 to 2046) the temperature in all months of the year will increase at all stations. The average annual precipitation decline in Isfahan, Tiran, Flavarjan, and Lenj stations for RCP 4.5 and RCP 8.5 scenarios are 18.6 and 27.6%, 15.2 and 18%, 22.5 and 31.5%, and 10.5 and 12.1%, respectively. The average increase in the evapotranspiration for RCP 4.5 and RCP 8.5 scenarios are about 2.5 and 4.1%, respectively. The irrigation water demands increases considerably and for some crops, on average 18%. Among the existing crops in the cropping pattern, barley, cumin, onion, wheat, and forage crops are more sensitive and their water demand will increase significantly. Results indicate that climate change could have a significant impact on water resources consumption. By considering irrigation efficiency in the region, climate change impacts will result in about 35 to 50 million m(3)/year, over-extraction from the aquifer. This additional exploitation causes an extra drop of 0.4 to 0.8 m in groundwater table per year in the aquifer. Therefore, with regard to the critical condition of the aquifer, management and preventive measures to deal with climate change in the future is absolutely necessary.
机译：在这项研究中，使用两种气候变化情景和20个GCM模型的组合评估了气候变化对作物需水量和灌溉需水量对区域种植模式的影响。包括CROPWAT，MODFLOW和统计模型在内的不同模型用于评估气候变化影响。结果表明，在未来一段时间（2017年至2046年），全年所有月份的温度将在所有站点升高。对于RCP 4.5和RCP 8.5情景，伊斯法罕，蒂兰，弗拉瓦让和Lenj站的年均降水量下降分别为18.6和27.6％，15.2和18％，22.5和31.5％，10.5和12.1％。 RCP 4.5和RCP 8.5情景下的蒸散量平均增加分别约为2.5％和4.1％。灌溉用水需求大量增加，对于某些农作物，平均增加18％。在以种植方式种植的现有作物中，大麦，小茴香，洋葱，小麦和草料作物更加敏感，其需水量将大大增加。结果表明，气候变化可能对水资源消耗产生重大影响。通过考虑该地区的灌溉效率，气候变化的影响将导致每年约35至5000万m（3），过度开采含水层。这种额外的开采每年会使含水层的地下水位额外下降0.4至0.8 m。因此，对于含水层的危急状况，未来应对气候变化的管理和预防措施是绝对必要的。

著录项

  • 来源
    《Ground water》 |2019年第2期|259-268|共10页
  • 作者

    Goodarzi Mustafa; Abedi-Koupai Jahangir; Heidarpour Manouchehr;

  • 作者单位

    AREEO, Agr Engn Res Dept, Markazi Agr & Nat Resources Res & Educ Ctr, Arak, Iran;

    Isfahan Univ Technol, Dept Water Engn, Coll Agr, Esfahan, Iran;

    Isfahan Univ Technol, Dept Water Engn, Coll Agr, Esfahan, Iran;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号