aggrade

简明释义

英[əˈɡreɪd]美[əˈɡreɪd]

v. 使河床升高；加积

第 三 人 称 单 数 a g g r a d e s

现 在 分 词 a g g r a d i n g

过 去 式 a g g r a d e d

过 去 分 词 a g g r a d e d

英英释义

单词用法

同义词

反义词

例句

1.As the delta continued to aggrade 淤积, new habitats were created for various species.

随着三角洲不断淤积，为各种物种创造了新的栖息地。

2.The team studied how human activities can cause rivers to aggrade 淤积 more rapidly.

研究小组研究了人类活动如何导致河流更快地淤积。

3.The river began to aggrade 淤积 after heavy rainfall, causing the banks to overflow.

在强降雨后，河流开始淤积，导致河岸溢出。

4.The construction project aimed to prevent the area from aggrading 淤积 and disrupting local ecosystems.

该建设项目旨在防止该地区淤积，以免干扰当地生态系统。

5.Engineers are concerned that the sediment could aggrade 淤积 around the dam, affecting its stability.

工程师们担心沉积物可能会在大坝周围淤积，影响其稳定性。

作文

In the field of geology, the term aggrade refers to the process by which a river or stream builds up its bed through the accumulation of sediment. This phenomenon can be observed in various environments, where the flow of water carries particles from one area and deposits them in another, leading to an increase in elevation of the riverbed. Understanding how rivers aggrade is crucial for environmental scientists and engineers, as it has significant implications for flood management, habitat preservation, and land use planning.When a river flows over time, it erodes the banks and the riverbed, picking up sediments such as sand, silt, and clay. These sediments are transported downstream until they reach a point where the water flow decreases, causing the particles to settle. This process of sediment deposition leads to the gradual aggradation of the riverbed. As more and more sediment accumulates, the river may begin to rise above its original level, creating new landforms and altering the landscape.One of the most notable examples of aggradation can be seen in deltas, where rivers meet larger bodies of water. The Mississippi River Delta, for instance, is a prime example of how sediment carried by the river has built up over centuries, creating rich ecosystems that support diverse wildlife. However, this aggradational process is not without its challenges. Human activities, such as dam construction and river channelization, can disrupt the natural flow of sediment, leading to erosion in some areas and excessive aggradation in others.Moreover, aggradation can also impact local communities. When a river aggrades, it can lead to increased flooding risks, as the river may overflow its banks more easily. This is particularly concerning in urban areas where infrastructure is built close to riverbanks. As sediment builds up, it can cause the river to become less efficient at draining excess water, leading to higher flood levels during heavy rain events.To mitigate these risks, engineers and planners must carefully monitor rivers and implement strategies to manage sediment flow. This might include dredging to remove excess sediment or creating artificial channels to guide the flow of water. Additionally, restoring wetlands along riverbanks can help absorb excess water and reduce the impacts of aggradation on surrounding areas.In conclusion, the concept of aggrade is vital to understanding the dynamics of river systems and their interactions with the environment. As we continue to face challenges related to climate change and urban development, it becomes increasingly important to study and manage the processes of aggradation. By doing so, we can better protect our ecosystems, communities, and infrastructure from the potential hazards associated with changing river landscapes.

在地质学领域，术语aggrade指的是河流或溪流通过沉积物的积累来构建其床面的过程。这种现象可以在各种环境中观察到，水流携带颗粒从一个区域转移并沉积到另一个区域，从而导致河床高度的增加。理解河流如何aggrade对环境科学家和工程师至关重要，因为它对防洪管理、栖息地保护和土地使用规划具有重要影响。随着时间的推移，河流流动会侵蚀岸边和河床，拾取沙子、淤泥和粘土等沉积物。这些沉积物被运输到下游，直到达到水流减缓的地方，导致颗粒沉降。沉积物沉积的这一过程导致河床逐渐aggrade。随着越来越多的沉积物积累，河流可能开始升高至其原始水平之上，形成新的地貌并改变景观。最显著的aggradation例子可以在三角洲中看到，河流与较大水体相遇。例如，密西西比河三角洲就是一个典型的例子，河流携带的沉积物经过数百年的积累，创造了支持多样野生动物的丰富生态系统。然而，这种aggradational过程并非没有挑战。人类活动，如修建大坝和河道整治，可能会干扰沉积物的自然流动，导致某些地区的侵蚀和其他地区的过度aggradation。此外，aggradation还会影响当地社区。当河流aggrade时，可能会导致洪水风险增加，因为河流更容易溢出其岸边。这在城市地区尤其令人担忧，因为基础设施通常建造在靠近河岸的地方。随着沉积物的积累，河流排水效率可能降低，导致在暴雨期间洪水水位上升。为了减轻这些风险，工程师和规划人员必须仔细监测河流，并实施管理沉积物流动的策略。这可能包括疏浚以去除多余的沉积物，或创建人工渠道来引导水流。此外，恢复沿河岸的湿地可以帮助吸收多余的水，减少对周围地区的aggradation影响。总之，aggrade的概念对于理解河流系统的动态及其与环境的相互作用至关重要。随着我们继续面临气候变化和城市发展的挑战，研究和管理aggradation过程变得愈加重要。通过这样做，我们可以更好地保护我们的生态系统、社区和基础设施，免受河流景观变化带来的潜在危害。