• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Dynamics of water in the hillslopes of a subtropical montane forest in the Sierra Madre Oriental, Nuevo Leon, Mexico.
【24h】

Dynamics of water in the hillslopes of a subtropical montane forest in the Sierra Madre Oriental, Nuevo Leon, Mexico.

机译：水动力学在一个亚热带山地森林的山坡的在Sierra Madre东方人，新莱昂，墨西哥的。

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

The state of Nuevo Leon, in northeastern Mexico, is situated in a semiarid region. The Sierra Madre Oriental (SMO) is a mountain range that traverses the state and plays an important role in its hydrological regime. All the rivers in the state originate within the SMO and run through the plains where the water is used for agriculture and urban consumption. However, very little is known about the dynamics of water on the slopes of the SMO. The objectives of this study were: (i) to define water pathways and fluxes within the soils of some typical sites of the SMO; (ii) to identify the factors that control water motion; and (iii) to assess the influence that vegetation type has on water pathways. Five representative sites (plots) were selected based on slope aspect, soil characteristics, and vegetation type. On each plot throughfall, overland flow, subsurface flow, and soil water content change were measured. Two approaches were used: natural rainfall and irrigation. Additional geological, soil, and vegetation variables were measured. There are no statistically significant differences in throughfall percentage among plots. Overland flow only occurred in plot 1 located on a south-facing slope; no overland flow was observed at the slope scale at this site. Subsurface flow was absent or small in the forested plots (north-facing slopes). The dominant process on these slopes is water infiltration which, coupled with a rapid percolation of water through macropores into a highly fractured bedrock, assured a rapid transmission of water to the bedrock.
机译：墨西哥东北部的新莱昂州位于半干旱地区。东方马德雷山脉（SMO）是穿越该州的山脉，并在其水文状况中发挥重要作用。该州的所有河流都起源于SMO，并流经平原，那里的水用于农业和城市消费。但是，对于SMO斜坡上水的动态知之甚少。这项研究的目的是：（i）定义SMO某些典型地点土壤中的水路和通量; （ii）确定控制水运动的因素； （iii）评估植被类型对水路的影响。根据坡度，土壤特性和植被类型选择了五个代表性地点（地块）。在每块土地上，均测量了陆上流量，地下流量和土壤含水量的变化。使用了两种方法：自然降雨和灌溉。还测量了其他地质，土壤和植被变量。各地块的穿透百分数没有统计学上的显着差异。陆上流量仅发生在位于朝南斜坡上的地块1中；在该地点，在坡度范围内没有观察到陆流。在森林地带（朝北的斜坡）中，地下流量很少或很小。在这些斜坡上的主要过程是水的渗透，再加上水通过大孔快速渗透到高度破裂的基岩中，确保了水快速输送到基岩。

著录项

  • 作者

    Flores Laureano, Jose Santos.;

  • 作者单位

    University of Toronto (Canada).;

  • 授予单位 University of Toronto (Canada).;
  • 学科 Agriculture Forestry and Wildlife.; Hydrology.
  • 学位 Ph.D.
  • 年度 2003
  • 页码 p.1566
  • 总页数 176
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 森林生物学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
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