river bar

简明释义

拦江沙

英英释义

例句

1.During low tide, the river bar became a popular spot for picnics.

在低潮时，河沙洲成了野餐的热门地点。

2.The boat couldn't pass through the shallow waters near the river bar.

船无法通过靠近河沙洲的浅水区。

3.The fishermen gathered at the river bar to cast their lines for trout.

渔民们聚集在河沙洲上，准备钓鳟鱼。

4.Birdwatchers often visit the river bar to see migratory birds.

鸟类观察者经常去河沙洲观看候鸟。

5.The kids built sandcastles on the river bar during summer vacation.

孩子们在暑假期间在河沙洲上堆沙堡。

作文

The term river bar refers to a natural formation that occurs at the mouth or along the banks of a river. These formations can be made up of sand, gravel, or other sediment that has been deposited by the flowing water. Understanding what a river bar is and its significance in the ecosystem is crucial for both environmental studies and recreational activities. In this essay, I will discuss the characteristics of river bars, their ecological importance, and their impact on human activities.Firstly, river bars are typically formed through the process of sedimentation. As river water flows, it carries various materials, including soil and rocks. When the river slows down, particularly at bends or during low water periods, these materials are deposited, creating a river bar. The size and shape of a river bar can vary greatly depending on the river's flow rate, sediment load, and surrounding landscape. Some river bars are small and barely noticeable, while others can be large enough to create new landforms.Ecologically, river bars play a vital role in supporting biodiversity. They often become habitats for various plant and animal species. For instance, many birds use river bars as nesting sites because they provide protection from predators and easy access to food sources such as fish and insects. Additionally, the vegetation that grows on river bars helps stabilize the soil and prevent erosion, which is essential for maintaining the health of the river ecosystem.Moreover, river bars can influence the hydrology of a river. They can change the flow patterns of water, creating calmer areas that support different types of aquatic life. This alteration in flow can also lead to the formation of pools and backwaters, which are critical for fish spawning and rearing young. Therefore, preserving river bars is important for maintaining healthy river ecosystems and ensuring the survival of various species.From a human perspective, river bars can have both positive and negative impacts. On one hand, they can provide recreational opportunities such as fishing, kayaking, and bird watching. Many people enjoy visiting river bars for leisure activities, and these areas can contribute to local economies through tourism. On the other hand, river bars can pose challenges for navigation, especially for boats and ships. If a river bar becomes too pronounced, it may obstruct waterways, making it difficult for vessels to pass through. This can lead to increased costs for shipping and transportation.In conclusion, the concept of a river bar encompasses much more than just a simple geological feature. It is an essential component of river ecosystems, supporting a diverse range of life and influencing water flow. While river bars offer numerous benefits for recreation and biodiversity, they also present challenges for human activities. Understanding the dynamics of river bars is crucial for effective management and conservation efforts, ensuring that these natural formations continue to thrive for generations to come.

术语river bar指的是发生在河流口或河岸沿线的自然形成物。这些形成物可以由沙子、砾石或其他沉积物组成，这些沉积物是由流水沉积而成。理解river bar是什么及其在生态系统中的重要性，对于环境研究和娱乐活动至关重要。在这篇文章中，我将讨论river bar的特征，它们的生态重要性，以及它们对人类活动的影响。首先，river bar通常通过沉积过程形成。当河水流动时，它携带各种材料，包括土壤和岩石。当河流减缓，特别是在弯道或低水位期间时，这些材料就会沉积下来，形成river bar。river bar的大小和形状可以根据河流的流速、沉积负荷和周围景观而大相径庭。有些river bar小且几乎不显眼，而另一些则大到足以形成新的地貌。在生态上，river bar在支持生物多样性方面发挥着重要作用。它们通常成为各种植物和动物物种的栖息地。例如，许多鸟类将river bar作为筑巢地点，因为它们为捕食者提供了保护，并便于获取鱼类和昆虫等食物来源。此外，生长在river bar上的植被有助于稳定土壤并防止侵蚀，这对于维持河流生态系统的健康至关重要。此外，river bar可以影响河流的水文特征。它们可以改变水流模式，创造出支持不同类型水生生物的平静区域。这种水流的改变还可能导致池塘和滞水区的形成，这对鱼类的产卵和幼鱼的抚育至关重要。因此，保护river bar对于维护健康的河流生态系统和确保各种物种的生存非常重要。从人类的角度来看，river bar可能带来积极和消极的影响。一方面，它们可以提供钓鱼、皮划艇和观鸟等休闲机会。许多人喜欢去river bar进行休闲活动，这些区域可以通过旅游为当地经济做出贡献。另一方面，river bar可能对航行构成挑战，特别是对于船只和轮船。如果river bar变得过于明显，可能会阻碍水道，使船只难以通行。这可能导致运输和运输成本的增加。总之，river bar的概念不仅仅是一个简单的地质特征。它是河流生态系统的重要组成部分，支持着多样的生命并影响水流。虽然river bar为休闲和生物多样性提供了许多好处，但它们也给人类活动带来了挑战。理解river bar的动态对于有效的管理和保护工作至关重要，确保这些自然形成物能够持续繁荣，为后代服务。