• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>AWRA's 2000 Summer Specialty Conference on Riparian Ecology and Management in Multi-Land USE Watersheds Aug 28-31, 2000 Portland, Oregon >TOPOGRAPHIC AND RIPARIAN CONTROLS ON HYDROLOGIC AND BIOGEOCHEMICAL RESPONSE OF FORESTED CATCHMENTS
【24h】

TOPOGRAPHIC AND RIPARIAN CONTROLS ON HYDROLOGIC AND BIOGEOCHEMICAL RESPONSE OF FORESTED CATCHMENTS

机译：森林群落水文和生化响应的地形和黎带控制。

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

Recent research suggests that riparian zones (variable source areas: VSAs) play a key role in regulating the export of nitrogen (N) and carbon (C) solutes from headwater forested catchments. We tested a unified hypothesis that investigates the feedback between hydrologic activity in riparian and hillslopes reservoirs and the export of nitrate and dissolved organic N (DON) from catchments. Topographic, hydrologic, and chemical data collected for the Archer Creek catchment (133 ha) were used. Nitrate and DON concentrations are being determined on an event and weekly basis. Using a 3-m resolution digital terrain model (DTM), the spatial extent of the VSAs and upslope contributing areas were related to the distribution function of the topographic index [In(a/tanβ), where a is the upslope contributing area per unit contour length, and β is the local slope]. TOPMODEL simulations provided information on the dynamic expansion and contraction of VSAs, and allowed partitioning of streamflow into saturation excess and subsurface flow components.
机译：最近的研究表明，河岸带（可变源区：VSA）在调节源头森林流域的氮（N）和碳（C）溶质的出口中起着关键作用。我们测试了一个统一的假设，该假设调查了河岸和山坡水库的水文活动与流域硝酸盐和溶解性有机氮（DON）的出口之间的反馈。使用了为阿彻溪流域（133公顷）收集的地形，水文和化学数据。硝酸盐和DON的浓度是按事件和每周确定的。使用3 m分辨率数字地形模型（DTM），VSA和上坡贡献面积的空间范围与地形指数[In（a /tanβ）的分布函数有关，其中a是每单位上坡贡献面积轮廓长度，β是局部斜率]。 TOPMODEL仿真提供了有关VSA的动态膨胀和收缩的信息，并允许将流量划分为饱和的过剩和地下流量分量。

著录项

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