将多种类型的监测与适应性管理周期联系起来,以支持环境流动
Xiaoyan Dai1, J Angus Webb1, Avril C Horne1
1Water, Environment and Agriculture Program, University of Melbourne, Australia.
Journal of environmental management
|December 14, 2024
概括
适应性管理利用监测来改善不确定性下的环境决策. 本研究引入了一种双循环框架,以优化监测投资,随着知识的增长转移资源,以实现更有效的生态系统管理.
科学领域:
- 环境科学 环境科学
- 生态生态学 生态生态学
- 保护生物学 保护生物学
背景情况:
- 环境管理计划面临不确定性,需要适应性管理来进行代决策.
- 监测对于适应性管理至关重要,它提供数据来评估干预的有效性并减少不确定性.
- 关于自适应管理的现有文献往往忽视了监测计划的具体作用和演变.
研究的目的:
- 检查不同类型的监测在支持适应性管理中的作用.
- 了解监控程序是如何设计和随着时间的推移而发展的.
- 提出一个新的框架,以优化对环境管理的监测投资.
主要方法:
- 开发一种新的双循环框架,以确定关键的不确定性并调整监控投资.
- 该框架应用于澳大利亚戈尔本河黄金 (澳大利亚) 和环境流动的案例研究.
- 对8年来监测数据的分析,以评估知识的获取和资源分配.
主要成果:
- 双循环框架有助于识别关键的不确定性,并指导监控中的代调整.
- 监测投资可以从战略上转移,不再填补已有的知识差距,而是解决新的不确定性或结果.
- 在Goulburn River案例研究中,金鱼的流产关系现在已经得到了很好的理解,这使得该地区的监测减少了.
结论:
- 拟议的双循环框架提高了环境管理计划的效率和有效性.
- 这种方法通过优化监测工作来加强适应性管理周期内的有目的学习.
- 该框架广泛适用于各种环境管理领域,促进在不确定性条件下更好的决策.
相关概念视频
01:24Rapidly Varying Flow
50
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...
50
01:29Gradually Varying Flow
32
Gradually varying flow (GVF) in open channels describes situations where water depth changes slowly along the channel due to factors like non-uniform bed slope, channel shape variations, or obstructions. This flow type occurs when the depth adjusts gradually to balance gravitational forces, shear forces, and energy requirements, resulting in a low rate of depth change.Characteristics of Gradually Varying FlowGVF is commonly observed in natural streams, rivers, and canals, where flow depth...
32
01:30Typical Model Studies
340
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
340
01:17Design Example: Analyzing Capacity Contours for Flood Risk Assessment
40
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...
40
01:24Weir
36
A weir is a hydraulic structure designed to partially obstruct an open channel, enabling precise control and measurement of water flow. By forcing water to flow over or through it, a weir allows for accurate determination of discharge rates, making it an essential tool in water resource management. These structures are extensively used in regulating river flows, irrigation systems, and flood control channels.Types of Weirs and Their FeaturesWeirs are categorized primarily into sharp-crested and...
36
01:30Underflow Gates
41
Underflow gates are vital for controlling water flow in irrigation canals. The three main types of underflow gates — vertical, radial, and drum gates — serve different purposes while ensuring effective flow management. Vertical gates move up and down, generating a free-flowing water jet; radial gates pivot to regulate the flow; and drum gates rotate for precise adjustments. The flow through these gates is influenced by downstream conditions, resulting in free or drowned outflow.Free and...
41