相关实验视频
Updated: Jul 24, 2025

12:44
Watershed Planning within a Quantitative Scenario Analysis Framework
Published on: July 24, 2016
8.1K
有多宽,多少? 一个框架来量化改变农业用地的河岸宽度的经济和生态结果
James Malcher1, Kay Critchell1, Ty G Matthews1
1Deakin University, Australia.
The Science of the total environment
|July 10, 2023
概括
管理沿河缓冲区 (RBZs) 是水道健康的关键. 一个新的工具量化了恢复RBZ的生态和经济影响,帮助全球的特定物业管理决策.
科学领域:
- 环境科学 环境科学
- 农业科学 农业科学
- 生态经济学生态经济学
背景情况:
- 沿海缓冲区 (RBZ) 对水道健康至关重要,但往往与农业用地使用相冲突.
- 目前的做法可能导致营养,污染物和沉积物流失,影响生态系统和碳捕获.
- 需要有效的工具来评估RBZ管理的生态和经济权衡.
研究的目的:
- 开发一种新的,低成本的,高速的方法,用于物业规模的RBZ管理的生态和经济量化.
- 创建一个动态的地理空间接口,以可视化从牧场切换到重新植被的沿海区域的影响.
- 根据澳大利亚东南部的案例研究,提供可适应,全球适用的模型输入.
主要方法:
- 利用多系统生态和经济量化模型.
- 开发了一个动态的地理空间接口用于数据可视化.
- 纳入农业土地适用性分析,碳捕集估计 (使用历史植被数据) 和地理信息系统用于空间成本 (重新植被,围).
主要成果:
- 开发的工具可以为一个大水域 (13万平方公里) 提供财产特定数据.
- 结果显示,目前对重新植被的财政激励措施往往无法弥补失去的牧场收入.
- 随着时间的推移,社会和生态结果可能会补偿最初的成本.
结论:
- 这种新的方法为改善RBZ管理提供了一个创新的框架.
- 它为替代管理策略提供了信息,例如增量复植和选择性木材采伐.
- 该工具促进了物业特定决策和利益相关者讨论,以改善水道健康.
相关概念视频
Design Example: Analyzing Capacity Contours for Flood Risk Assessment
72
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
72
Design Example: Design of an Irrigation Channel
140
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...
140
Rapidly Varying Flow
98
Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
98
Adaptations that Reduce Water Loss
25.8K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.8K
Responses to Drought and Flooding
10.7K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.7K

