制作英语小报帮忙找下素材 关于自然灾害的 一些历史上的自然灾害的英语介绍

制作英语小报帮忙找下素材 关于自然灾害的 一些历史上的自然灾害的英语介绍
制作英语小报
帮忙找下素材 关于自然灾害的 一些历史上的自然灾害的英语介绍

制作英语小报帮忙找下素材 关于自然灾害的 一些历史上的自然灾害的英语介绍
Earth's natural variability, including human-induced natural variability, no, no, not occurred when this mutation harm to human society, that is a natural disaster. Because it to the production of human life and with varying degrees of damage, including to the media for labor between man and nature, and the associated human relationships. Disasters are negative or undermine the role. Therefore, natural disasters man and nature is a manifestation of contradictions, with the two major natural and social attributes, which is the past, present and future faced by the most serious one of the challenges.
Worldwide major emergencies, including natural disasters: drought, floods, typhoons, storm surges, damage, hail, tsunamis, earthquakes, volcanoes, landslides, mudslides, forest fires, pests and diseases such as agriculture and forestry.
It is a result of floods or excessive rainfall intensity too much (rain or rainstorm), caused rivers burst, flash floods, flooding fields, damaging buildings, flooding casualties. The frequent floods in China, intensity, the middle and lower reaches of Yangtze River, the Huang - Huai-Hai, Liaohe and downstream is especially serious in southern China, the annual 4 ~ September is the period of major rivers flood, the state spent a lot of money on flood control measures. Over the past 30 years, China's most serious flooding was in August 1975 on the 7th May to Zhumadian in Henan Province, three days maximum rainfall of 1,605 mm (average annual precipitation in the region a total of 800 millimeters), heavy rain caused flash floods, two water reservoir dam Man outburst, 1.13 million hectares of farmland inundated and destroyed 100 kilometers Jingguang Railway line, tens of thousands of people dead, direct economic losses amounted to more than 100 billion. Summer 1991, Jianghuai regional flood disaster area, a major concern of the disaster at home and abroad, in direct economic losses of more than 50 billion.
Drought Drought is long sunny. Heat, rain or continued drier weather disasters. In its initial stage there, people do not feel that its arrival, but the longer the drought-hit area is expanding, increasingly serious. In China, throughout the year will be drought, spring drought in most parts of opportunities, of heavy, sustained long time. The incidence of drought, not only in time sequence with a relatively concentrated, such as Beijing between 1470-1949 in the 170 drought, the running time was 115; But in the space of a mass, such as in the spring of 1950, most of Inner Mongolia, the Hexi Corridor in Gansu Province, northern Hebei Province, northern Shaanxi drought , 7 ~ September Yangtze River, Huaihe River, Yellow River and Hanshui River Valley area of the drought years, since the 1950-80 alone 11.
Tropical cyclone is a tropical sea surface from the low atmospheric pressure vortex. Wind near its center is divided into four size: 6 to 7 winds to a tropical low pressure, for eight to nine tropical storms, 10 ~ 11 to a tropical storm, and more than 12 of the typhoon. In the tropical western Pacific sea surface 30 typhoons each generation (38% of the world), August 7 ~ Maximum activities of the typhoon, tropical sea surface generation, then moving northwest, the average annual figure of 7 typhoon landing in China's coastal regions. The typhoon is bringing strong winds, heavy rain (15 of China's coastal province recorded the highest rainfall, 80% are caused by the typhoon), and the tidal wave disaster, a serious threat to people's lives and property safety.
I said before the August 1975 floods disaster in Henan, 7503, is due to the typhoon landed, deep inland moving speed has slowed down, stagnation, low maintenance Needless brought the torrential rain. The typhoon has landed in Taiwan, Zhejiang. Fujian, Guangdong, Hunan accounting, Jiangxi, Hebei, Henan provinces and 10 rainstorm. The most serious of Henan, rainstorms area of the province's third largest rainfall 1 / hours 189.5 mm, 24 / hour 1061.8 mm, resulting in a rare century flood.
The so-called tidal disaster is defined under strong storm caused coastal storm surges and waves superimposed on the flood tide of astronomical high tide, the tide over local warning level, destroying defense facilities, resulting in flooding, forming tidal disaster. My main tidal disaster is caused by the typhoon and cold. Much hit the southeastern coast is heavy influx of disaster-prone areas. Yellow and Bohai Sea north, cold in winter and spring cold front crossing, causing Bohai seven northeast winds over the southern coast of the Bohai Sea caused tidal disaster.
Cold damage in the course of crop growth and development, as strong cold wave caused a slowdown. China's northeast region, including low summer temperatures, the South and the winter rain season after the Cold Dews chilling damage. The middle and lower reaches of Yangtze River in southern China and autumn rice heading flowering, if this weather rice shell, and empty grain production. January 26, 1969 compared to 30 at the Yangtze River Basin cold, cool 14 ~ 20 ° C, winter wheat, rape and serious damage to fruit trees. In October 1977 25 ~ 29 min strong cold wave to Inner Mongolia, Xinjiang 0.5 meters deep snow, grasslands were buried, and large numbers of livestock deaths.
Earthquake dynamic role in the Earth's crust caused the modern activities have generally divided into tectonic earthquakes (95%), the fall of the earthquake and volcanic earthquakes. China has become the world's most quake-hit areas, and China's belt located in the Pacific Rim and the Mediterranean, the Himalayan belt crossroads location, the violent activities of the modern crust. In addition, Zhejiang and Guizhou provinces, the provinces have been occurring in six earthquakes. January 23, 1556 Wuhua County of Shaanxi 8 earthquake, "yes, Shanxi, Shaanxi, Henan, while earthquakes, sound like thunder, as neighbors Wong bark ... or split flow, or collapsible City Gallery housing to people in the mountains or the plains prominent Fu ... famous canals crushing military and civilian officials were 820,000 ... "(" Jiajing Record ") is the history of our country one of the largest earthquakes. July 28, 1976 7.8 earthquake in Tangshan, in the industrial city of one million population, become an instant ruins of this 10th century world's most devastating earthquake in the first place.
Earthquakes are inevitable, earthquake prediction is the world's problems. In China, long-term projections progress has been made in the field, but can also be accurately forecast of a minority on this with the impending prediction difficult to make the arduous efforts.
It is the slope landslide large rock and soil, in the role of gravity along the sliding surface as a whole will decline, causing the slope and the slope of farmland, buildings damaged or buried and casualties. Because of differences in conditions of natural and man-made factors affect different, landslides type is diverse. China is mountainous and multi-national earthquake, the history of earthquakes caused by heavy rains and landslides are frequent, with the building of a development, but also emerging Reservoir. Mines, and the mountain town, cutting the landslide. August 25, 1933 - Mao Timorese Sichuan River County Diez earthquake, in the northeast around 30 collapse, slippery Diez Longchi Hill River City and two relatively large landslides and high-speed, plug vortex Jiang, a weir dam height over 160 meters; 45 days after the pan-choked water overflow outburst, hundreds of kilometers along the river are subject to heavy disaster. Hubei native Salt River phosphate rock, underground goaf, and of cracking, displacement upsurge after the rain, on June 3, 1980 morning, more than 100 million cubic meters of mountain sudden slump, Hang Hau, the destruction of buildings, office buildings, hostels, large mining machinery and more than 280 staff were buried in an instant 20 more meters of gravel under.
Mudslides often sudden outbreaks in the rainy season, thunderous Valley, has the muddy silt stones Gallant flood swept down against all the way forward. Mudslides disaster affected 23 of China's provinces, municipalities and autonomous regions, affecting mountain mining towns, transport (railways, highways, waterways), farm villages, water and facilities. According to the railway department, China's mountain railway
There are 1,386 mudslides ditch, threatening more than 3,000 kilometers of lines safe operation.
Forest fires it from the staff or natural or inadvertently triggered the fire phenomenon. More serious forest fires due to drought. High temperatures, high winds, lightning or caused by exceptional weather conditions, often underestimated and out of the fire once again formed at the curb inhuman means. China's forest fires with the loss of scientific and technological progress and strengthening the management of forest fires in the lower. But forest coverage rate is only 13% and the per capita forest volume of less than 10 million cubic meters in China, reduce losses and improve the coverage is equally important. Forest fires not only because I made economic losses and casualties, and to the ecological and natural landscape brought serious damage. 1987 Daxinganling forest fires. Overzealous 1.14 million hectares of forest land, accounting for 1% of the national forest land.
Agroforestry rodent pests Cordyceps it means crops and forest diseases, pests. Weed and Mouse. On crops, disease, insects, grass, rats from each of the country's population, each claiming 50 kilograms of grain and other food. China has more than 1,200 crop pest species, there are devastating Mouse and vicious weed, pest outbreaks and if uncurbed so, the basis of China's agricultural industry will have a significant impact.
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