• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Water Policy >Isotopic analysis of water cycle elements in different land covers in a small headwater watershed
【24h】

Isotopic analysis of water cycle elements in different land covers in a small headwater watershed

机译：小源流域不同土地覆被中水循环元素的同位素分析

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, comparisons of isotopic variation of rainfall, throughfall, surface water, and groundwater were conducted in the Meilin watershed, which represents two different land uses, chestnut wood and bamboo. Also, isotopic differences between rainfall and throughfall were identified in these sub-watersheds. The results showed that the isotopic value of incremental rainfall, incremental throughfall and surface water exhibited a marked temporal variation in the selected sub-watersheds. The throughfall isotopic variation range was smaller than that of rainfall, which may result from the different production process between rainfall and throughfall. However, the isotopic composition difference between rainfall and throughfall resulting from different land uses was insignificant. The range of isotopic composition variation of surface water was not the same as that of rainfall, indicating that surface water came from a mix of precipitation and water stored before the rainfall event. The temporal variation of the isotopic composition of groundwater was small, implying that the influence of different land uses on groundwater isotopic composition was insignificant. The total variation range of delta H-2 and delta O-18 of groundwater was smaller than that of surface water and sequential incremental rainfall, which means the delta O-18 of groundwater can be replaced by that of base flow before the event in the hydrograph separation.
机译：在这项研究中，对梅林流域进行了降雨，通透水，地表水和地下水同位素变化的比较，该流域代表了两种不同的土地利用：栗木和竹林。此外，在这些子集水区中，降雨与降雨之间的同位素差异也得到了确认。结果表明，在选定的小流域中，降雨增加，通水增加和地表水的同位素值表现出明显的时间变化。贯穿降雨的同位素变化范围小于降雨，这可能是由于降雨与贯穿降雨的生产过程不同而引起的。然而，不同土地利用造成的降雨和穿透降雨之间的同位素组成差异不明显。地表水的同位素组成变化范围与降雨的范围不同，表明地表水来自降水和降雨事件之前储存的水的混合。地下水同位素组成的时间变化很小，这表明不同土地利用方式对地下水同位素组成的影响不明显。地下水的三角洲H-2和三角洲O-18的总变化范围小于地表水和连续增加的降雨，这意味着在该事件发生之前，地下水的三角洲O-18可以被基础流量的三角洲替代。水文分离。

著录项

  • 来源
    《Water Policy》 |2017年第3期|574-585|共12页
  • 作者

    Qu Si-min; Shan Shuai; Chen Xi; Zhou Min-Min; Liu Han;

  • 作者单位

    Hohai Univ, Natl Cooperat Innovat Ctr Water Safety & Hydrosci, Nanjing 210098, Jiangsu, Peoples R China|Hohai Univ, Coll Water Resources & Hydrol, Nanjing 210098, Jiangsu, Peoples R China;

    Hohai Univ, Natl Cooperat Innovat Ctr Water Safety & Hydrosci, Nanjing 210098, Jiangsu, Peoples R China|Hohai Univ, Coll Water Resources & Hydrol, Nanjing 210098, Jiangsu, Peoples R China;

    Hohai Univ, Coll Water Resources & Hydrol, Nanjing 210098, Jiangsu, Peoples R China|Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Jiangsu, Peoples R China;

    Hohai Univ, Natl Cooperat Innovat Ctr Water Safety & Hydrosci, Nanjing 210098, Jiangsu, Peoples R China|Hohai Univ, Coll Water Resources & Hydrol, Nanjing 210098, Jiangsu, Peoples R China;

    Hunan Hydro & Power Design Inst, Changsha 410007, Hunan, Peoples R China;

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

    Different land uses; Rainfall; Stable isotope; Temporal variation; Throughfall;

    机译：不同土地利用;降雨;稳定同位素;时间变化;通透度;

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