染雾用英语说”沙尘暴“ 篇一
Title: Sandstorm
Introduction:
A sandstorm is a natural phenomenon characterized by strong winds carrying particles of sand and dust, which reduce visibility and pose various health hazards. Sandstorms are common in arid and semi-arid regions, such as deserts, and can cause significant damage to the environment, infrastructure, and human health. In this article, we will explore the causes, effects, and preventive measures related to sandstorms.
Causes:
Sandstorms are primarily caused by strong winds that pick up loose sand and dust particles from the ground, creating a swirling cloud of debris. These winds can be generated by weather systems, such as frontal systems or thunderstorms, or by local topographic features that create wind tunnels or channels. Additionally, human activities, such as deforestation and overgrazing, can contribute to the occurrence and intensity of sandstorms by destabilizing the soil and reducing vegetation cover.
Effects:
Sandstorms have numerous adverse effects on the environment, society, and economy. Firstly, they lead to reduced visibility, making it difficult for people to navigate and causing transportation disruptions. The fine particles carried by the wind can cause respiratory problems when inhaled, particularly for individuals with pre-existing respiratory conditions. Moreover, sandstorms can damage crops, leading to agricultural losses and food shortages. The deposited sand and dust can also accumulate on infrastructure, such as buildings and power lines, causing structural damage and electrical failures.
Preventive Measures:
To mitigate the impact of sandstorms, various preventive measures can be implemented. Afforestation and reforestation initiatives can help stabilize the soil and reduce the risk of erosion, thus minimizing the occurrence of sandstorms. Additionally, the use of windbreaks, such as fences or vegetation barriers, can help reduce wind speed and prevent the transport of sand and dust. In urban areas, improved building designs with proper sealing and air filtration systems can minimize the infiltration of sand and dust into indoor spaces. Public awareness campaigns and early warning systems can also play a crucial role in alerting people to take necessary precautions during sandstorms.
Conclusion:
Sandstorms are a natural phenomenon with significant impacts on the environment and human well-being. By understanding the causes and effects of sandstorms, and implementing preventive measures, we can minimize their adverse consequences. Continued research and cooperation are essential to develop sustainable strategies for managing and mitigating the risks associated with sandstorms.
Word count: 387
用英语说”沙尘暴“ 篇二
Title: The Hazards of Sandstorms
Introduction:
Sandstorms, also known as dust storms, are meteorological events characterized by strong winds carrying large amounts of sand and dust particles. These storms can have severe consequences for the environment, health, and economy. In this article, we will delve into the hazards posed by sandstorms and the measures that can be taken to mitigate their impact.
Health Hazards:
Sandstorms can have detrimental effects on human health. The inhalation of fine particles present in the air during a sandstorm can lead to respiratory problems, such as coughing, wheezing, and shortness of breath. Individuals with pre-existing respiratory conditions, such as asthma or chronic obstructive pulmonary disease (COPD), are particularly vulnerable. Furthermore, the abrasive nature of sand and dust particles can cause eye irritation and damage, leading to corneal abrasions or conjunctivitis.
Environmental Hazards:
Sandstorms can cause significant damage to the environment. The transportation of sand and dust can result in soil erosion, leading to the loss of fertile topsoil and reduced agricultural productivity. The deposition of these particles on vegetation can hinder photosynthesis, affecting plant growth and survival. Additionally, sandstorms can disrupt ecosystems by burying habitats and altering the natural balance of species. The spread of sand dunes due to sandstorms can also encroach upon human settlements and agricultural land.
Economic Hazards:
Sandstorms can have substantial economic impacts. The damage caused to infrastructure, such as buildings, roads, and power lines, can result in costly repairs and interruptions to essential services. Agricultural losses due to crop damage can lead to food shortages and increased prices. Furthermore, sandstorms can impact industries reliant on outdoor activities, such as tourism and construction, by hindering operations and reducing visitor numbers or work productivity.
Mitigation Measures:
To mitigate the hazards of sandstorms, preventive measures can be employed. Dust control measures, such as soil stabilization techniques and vegetation cover, can help reduce the amount of loose sand and dust available for transport. Early warning systems can be implemented to provide timely alerts to the public, allowing them to take necessary precautions. Individuals can protect themselves during sandstorms by wearing masks, goggles, and protective clothing. Additionally, efforts to combat climate change and reduce air pollution can indirectly contribute to minimizing the occurrence and intensity of sandstorms.
Conclusion:
Sandstorms pose significant hazards to human health, the environment, and the economy. By understanding the risks associated with sandstorms and implementing appropriate measures, we can reduce their impact and protect ourselves and our surroundings. Collaboration between governments, communities, and individuals is essential in developing effective strategies to mitigate the hazards of sandstorms.
Word count: 404
用英语说”沙尘暴“ 篇三
用英语说”沙尘暴“
引导语：沙尘暴是指强风把地面大量沙尘物质吹起并卷入空中，使空气特别混浊，水平能见度小于一千米的严重风沙天气现象。以下是yjbsy小编分享给大家的用英语说”沙尘暴“，欢迎阅读!
5月3日以来，一场规模巨大的沙尘暴一夜之间席卷西北、华北、东北。据中国环境监测总站地面监测与卫星遥感数据显示，陕西、山西、内蒙古、北京、河北等多省市同时沦陷，北京多个监测站PM10浓度已超过1000微克/立方米。
Large amounts of dust and sand blowing in on strong winds from Mongolia and the Inner Mongolia autonomous region have swept large areas in the northwest and north since Wednesday, driving air pollution indexes to hazardous levels and lowering visibility.
5月3日以来，来自蒙古和内蒙古自治区的强风带着大量沙尘席卷西北和北方大部分地区，致使空气污染指数达到严重级别，能见度下降。
本次沙尘暴(sandstorm)影响面积占我国国土六分之一，多地空气质量爆表(exceed the upper limit of the air quality index)，沙尘过程影响范围和强度，均创下今年以来之最。专家表示，造成如此大范围沙尘天气的原因——是由于近期北方地区降水少(less precipitation)、气温高(high temperature)，以及风速大(strong wind)、沙尘输送强(large-scale transport of dust)等。
PM2.5是指大气中直径小于或等于2.5微米的颗粒物(particulate matter smaller than 2.5 micrometers in diameter)，可直接进入人体的肺泡(alveoli of the lungs)，也称为可入肺颗粒物。它的直径还不到人的头发丝粗细的1/20。虽然PM2.5只是地球大气成分中含量很少的.组分，但它对空气质量和能见度(air quality and visibility)等有重要的影响。与较粗的大气颗粒物相比，PM2.5粒径小，富含大量的有毒、有害物质(toxic and hazardous matters)且在大气中的停留时间长、输送距离远，因而对人体健康和大气环境质量的影响更大。
PM10是可吸入颗粒物(inhalable particulate matter)，一般名称上讲可吸入颗粒物指的是PM10，就是说这个空气中颗粒物的直径从空气动力学来讲直径大小是十个微米，是能够吸入呼吸道的，从上呼吸道，通过声门能够到下呼吸道，所以它叫可吸入颗粒物PM10。
相关词汇
desertification 沙漠化
sandstorm 沙尘暴
air quality rating 空气质量评级
visibility 能见度
sand and dust weather 沙尘天气
forestation 植树造林
Three-North Shelter Forestation Project “三北防护林”工程
arid and semi-arid areas 干旱和半干旱地区
