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相关概念视频

Responses to Drought and Flooding02:41

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Trapezoidal channels are widely used in irrigation systems due to their cost-effectiveness and efficiency in conveying water. Trapezoidal channels feature a flat bottom and sloping sides, making them stable and easier to construct compared to other shapes. The bottom width and side slope ratio are determined based on the required flow capacity and site conditions. The side slope is kept gentle for unlined channels to prevent soil erosion.Hydraulic parameters in channel design include the flow...
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相关实验视频

Updated: Jun 24, 2025

Design and Construction of an Urban Runoff Research Facility
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没有增加土壤风侵蚀与建立中心旋转灌系统在Mu-Us沙地土壤的增加.

Jie Liao1, Fei Peng2, Wenping Kang1

  • 1Drylands Salinization Research Station, Northwest Institute of Eco-Environment and Resource, Chinese Academy of Sciences, Lanzhou 730000, China.

The Science of the total environment
|June 1, 2024
PubMed
概括
此摘要是机器生成的。

在沙地上的中心枢纽灌系统 (CPI) 最初没有增加风侵蚀. 然而,收获后的管理对于防止这些新耕种地区未来的土壤侵蚀至关重要.

关键词:
中心枢纽灌灌系统土地整合 土地整合穆乌斯的沙地是沙地.土壤风侵蚀 土壤风侵蚀

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相关实验视频

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Wastewater Irrigation Impacts on Soil Hydraulic Conductivity: Coupled Field Sampling and Laboratory Determination of Saturated Hydraulic Conductivity
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科学领域:

  • 环境科学 环境科学
  • 土壤科学 土壤科学
  • 遥感 遥感 遥感 遥感

背景情况:

  • 中国北部的沙地由于生态恢复和气候变化而稳定.
  • 中心枢纽灌系统 (CPI) 越来越多地用于这些地区的耕地扩张.
  • 在这些新开发的土地上,CPI对土壤风侵蚀的影响在很大程度上是未知的.

研究的目的:

  • 从2000年到2020年,分析Mu-Us沙土中CPI的时间变化.
  • 用修订的风侵蚀方程 (RWEQ) 建模CPI对土壤风侵蚀的影响.
  • 评估土地政策,自然条件和CPI建立之间的关系.

主要方法:

  • 利用卫星图像来追踪二十年来CPI的扩张.
  • 应用了修订的风侵蚀方程 (RWEQ) 来建模风侵蚀模块.
  • 与土地政策和地理特征相关的CPI分布.

主要成果:

  • 消费者消费指数的建立始于2010年左右,到2015年迅速扩大,并在2020年达到顶峰.
  • 综合价值指标主要建立在正在进行土地整合的地区,与政策指令保持一致.
  • 尽管该地区风力侵蚀总体下降,但CPI区域内的风力侵蚀在2019年在与2010年相比的类似气候条件下显示增加.

结论:

  • 在Mu-Us沙地中CPI的建立受到当地政策和环境因素的重大影响.
  • 虽然CPI目前占总面积的不到1%,对整体风力侵蚀没有显著影响,但要减轻未来的土壤损失,必须对收获后进行仔细的管理.