lichens

简明释义

英[ˈlaɪ.kənz]美[ˈlaɪ.kənz]

n. [植]地衣（lichen 的复数）；地衣类

v. 使长满地衣（lichen 的三单形式）

英英释义

单词用法

同义词

反义词

例句

1.Now lichens are due to have their turn.

现在快轮到的是苔藓。

2.On the continent itself are a few insects, some lichens and mosses, but nothing else that is land supported.

依附于南极洲陆地生存的只有很少的一些昆虫、地衣和苔藓。

3.Munk says this makes sense, given the fact that many of the trees in the Amazon rainforest have trunks covered in white lichens.

蒙克的依据是很有意义的，因为很多在亚马逊雨林的树干都覆盖着一层白色地衣。

4.The only plants to be found in Antarctica are algae, mosses, and lichens.

在南极洲所发现的植物只有藻类、苔藓和地衣。

5.Lichens, symbiotic organisms that combine fungi and algae, can be powerful weathering agents, secreting chemicals called chelates that work to break down rock.

地衣，共生的有机体结合起来，真菌和藻类，可以是有力风化的动因和力量，所分泌的化学物质称为螯合物那造成岩石的破裂。

6.Here Antarctica's endemic plants dwell: lichens, terrestrial algae, and mosses.

在这里，生长着南极洲的本地植物：地衣、陆生藻类以及苔藓。

7.This sharing enables lichens to resist the most adverse environmental conditions found on earth.

这些共有的能够使地衣抵制地球上最恶劣的环境条件。

8.The rocky surface was covered with various types of lichens (地衣), creating a unique ecosystem.

岩石表面覆盖着各种类型的地衣，形成了一个独特的生态系统。

9.Scientists use lichens (地衣) to monitor air quality in remote areas.

科学家利用地衣来监测偏远地区的空气质量。

10.Some animals rely on lichens (地衣) for food during the winter months.

一些动物在冬季依赖地衣作为食物。

11.The bright colors of lichens (地衣) can indicate a healthy environment.

鲜艳的地衣颜色可以指示一个健康的环境。

12.In the forest, we found lichens (地衣) growing on tree bark and rocks.

在森林里，我们发现地衣生长在树皮和岩石上。

作文

Lichens are fascinating organisms that are often overlooked in the study of ecology. They are a symbiotic relationship between fungi and photosynthetic partners, usually algae or cyanobacteria. This unique partnership allows lichens to thrive in some of the most inhospitable environments on Earth, from arctic tundras to rocky deserts. In this essay, we will explore the characteristics, ecological importance, and uses of lichens (地衣) in our environment. One of the most remarkable features of lichens (地衣) is their ability to survive in extreme conditions. They can endure harsh weather, including intense sunlight, drought, and freezing temperatures. This resilience is primarily due to the protective fungal layer that surrounds the photosynthetic cells. The fungus not only provides structure but also absorbs moisture and nutrients from the environment, which are then shared with the algal partner. This mutualistic relationship enables lichens (地衣) to colonize areas where few other organisms can survive. Ecologically, lichens (地衣) play a crucial role in their ecosystems. They are often one of the first organisms to colonize bare rock or disturbed soil, paving the way for other plants and animals to inhabit these areas. By breaking down rock into soil, lichens (地衣) contribute to the formation of new ecosystems. Furthermore, they provide food and habitat for various species, including insects and small mammals. Another significant aspect of lichens (地衣) is their sensitivity to environmental changes, particularly air quality. Many species of lichens (地衣) are highly sensitive to pollutants, especially sulfur dioxide and heavy metals. As a result, scientists often use lichens (地衣) as bioindicators to monitor air quality. A decline in lichen diversity or health can signal increasing pollution levels, making them valuable tools for environmental conservation efforts. In addition to their ecological significance, lichens (地衣) have been used by humans for various purposes throughout history. Indigenous peoples have utilized lichens (地衣) for food, medicine, and dye. Some species are edible and have been used as a source of nutrition during times of scarcity. Others have been found to possess antimicrobial properties, making them useful in traditional medicine. Additionally, the vibrant colors of certain lichens (地衣) have been used to create natural dyes for textiles. In recent years, researchers have begun to explore the potential applications of lichens (地衣) in biotechnology and environmental science. For instance, scientists are investigating the use of lichens (地衣) in bioremediation, a process that uses living organisms to remove contaminants from the environment. Their ability to absorb heavy metals and other pollutants could be harnessed to clean up polluted sites. In conclusion, lichens (地衣) are not just simple organisms; they are complex, resilient, and ecologically significant entities. Their ability to survive in extreme conditions, their role in ecosystem development, and their sensitivity to environmental changes make them essential components of our natural world. As we continue to study and understand lichens (地衣), we uncover more about their potential benefits and the importance of preserving these remarkable organisms for future generations.