• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Soil and Water Research >Soil water response to rainfall in a dune-interdune landscape in Horqin Sand Land, northern China
【24h】

Soil water response to rainfall in a dune-interdune landscape in Horqin Sand Land, northern China

机译：中国北方哈尔沁沙地的沙丘景观降雨土壤水反应

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

Soil water dynamic is considered an important process for water resource and plantation management in Horqin Sand Land, northern China. In this study, soil water content simulated by the SWMS-2D model was used to systematically analyse soil water dynamics and explore the relationship between soil water and rainfall among micro-landforms (i.e., top, upslope, midslope, toeslope, and bottomland) and 0-200 cm soil depths during the growing season of 2013 and 2015. The results showed that soil water dynamics in 0-20 cm depths were closely linked to rainfall patterns, whereas soil water content in 20-80 cm depths illustrated a slight decline in addition to fluctuations caused by rainfall. At the top position, the soil water content in different ranges of depths (20-40 and 80-200 cm) was near the wilting point, and hence some branches, and even entire plants exhibited diebacks. At the upslope or midslope positions, the soil water content in 20-80 or 80-200 cm depths was higher than at the top position. Soil water content was higher at the toeslope and bottomland positions than at other micro-landforms, and deep caliche layers had a positive feedback effect on shrub establishment. Soil water recharge by rainfall was closely related to rainfall intensity and micro-landforms. Only rainfalls > 20 mm significantly increased water content in > 40 cm soil depths, but deeper water recharge occurred at the toeslope position. A linear equation was fitted to the relationship between soil water and antecedent rainfall, and the slopes and R-2 of the equations were different among micro-landforms and soil depths. The linear equations generally fitted well in 0-20 and 20-40 cm depths at the top, upslope, midslope, and toeslope positions (R-2 value of about 0.60), with soil water in 0-20 cm depths showing greater responses to rainfall (average slope of 0.189). In 20-40 cm depths, the response was larger at the toeslope position, with a slope of 0.137. In 40-80 cm depths, a good linear fit with a slope of 0.041 was only recorded at the toeslope position. This study provides a soil water basis for ecological restoration in similar regions.
机译：土壤水动力被认为是北方霍沁沙地水资源和种植园管理的重要过程。在这项研究中，SWMS-2D模型模拟的土壤水分用于系统地分析土壤水动态，探讨了微地地水域下的土壤水和降雨之间的关系（即顶部，上坡，中腹隙，脚趾和底部） 0-200厘米在2013年和2015年生长季节的土壤深度。结果表明，0-20厘米深度的土壤水动力学与降雨模式密切相关，而20-80厘米深度的土壤水含量显示出略有下降除了降雨引起的波动。在顶部位置，不同的深度范围（20-40和80-200厘米）的土壤含水量在抗悬点附近，因此一些分支，甚至整个工厂都表现出沉故。在Upslope或中间流动位置，20-80或80-200cm深度的土壤含水量高于顶部位置。在脚趾和底部位置较高的土壤含水量高于其他微地地的位置，深层浓度层对灌木建立具有正反馈效果。降雨量的土壤水充电与降雨强度和微地位密切相关。只有降雨量> 20毫米显着提高水含量> 40厘米的土壤深度，但在脚趾位置发生更深的水补给。线性方程安装在土壤水和前降雨之间的关系，以及微地和土壤深度的方程的斜坡和R-2不同。线性方程通常在0-20和20-40cm深度井中安装在顶部，上坡，中间瓣和脚趾位置（R-2值为约0.60），在0-20cm深度中具有土壤水分，显示出更大的反应降雨量（平均斜率为0.189）。在20-40厘米的深度中，响应在脚趾位置较大，斜率为0.137。在40-80厘米的深度中，斜率为0.041的良好线性配合仅在脚趾位置记录。本研究为类似地区的生态恢复提供了土壤水基础。

著录项

  • 来源
    《Soil and Water Research》 |2019年第4期|共11页
  • 作者

    Zhou Xueya; Guan Dexin; Wu Jiabing; Yuan Fenghui; Wang Anzhi; Jin Cangjie; Zhang Yushu;

  • 作者单位

    Henan Univ Key Lab Geospatial Technol Middle &

    Lower Yellow Coll Environm &

    Planning Minist Educ Kaifeng Peoples R China;

    Chinese Acad Sci Inst Appl Ecol Key Lab Forest Ecol &

    Management Shenyang Liaoning Peoples R China;

    Chinese Acad Sci Inst Appl Ecol Key Lab Forest Ecol &

    Management Shenyang Liaoning Peoples R China;

    Chinese Acad Sci Inst Appl Ecol Key Lab Forest Ecol &

    Management Shenyang Liaoning Peoples R China;

    Chinese Acad Sci Inst Appl Ecol Key Lab Forest Ecol &

    Management Shenyang Liaoning Peoples R China;

    Chinese Acad Sci Inst Appl Ecol Key Lab Forest Ecol &

    Management Shenyang Liaoning Peoples R China;

    China Meteorol Adm Inst Atmospher Environm Shenyang Liaoning Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 农业基础科学;
  • 关键词

    antecedent rainfall; micro-landforms; response magnitude; soil water dynamics;

    机译：先行降雨;微地地;响应幅度;土壤水动态;

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