人类带给大自然的生态灾难的例子？英文双语对照

大自然为人类及动植物的繁衍生息提供着最基本的生存需要。人类在长期的生存活动中，为了揭示自然现象，不断探索大自然的奥秘，与此同时，却又无时不在破坏着大自然的和谐。许多物种在人类未认识之前就已经灭绝，尤其是造成赖以生存的地球环境日益恶化及自然资源的几近枯竭。

近年来，人类注意到，在破坏自然环境的同时，也受到了大自然无情的鞭笞，人及动植物的生存受到了威胁。

大自然对人类的灾难，其一是由于自然界自身的循环周期形成的，如厄尔尼诺现象，形成全球气候变暖，造成火山爆发、洪涝干旱灾难等。

其二是由于人类对自然的无限索取，破坏了生态平衡，如在我国极为严重的沙漠化问题。二千多年前，茫茫万里的塔克拉玛干大沙漠的边缘，沿孔雀河往东罗布泊绿洲上，有一座美丽的城堡--楼兰，城内街巷纵横，中外商贾云集，是中西文化相聚交流的一颗璀璨的明珠。因为人们忽视了环境建设，致使沙漠年年向城廓逼近，流入罗布泊的河川渐渐枯竭，土壤的盐碱化程度加剧，大片的胡杨林因而死亡，林地变为荒漠。

直到20世纪70年代，居住在那里的人们不得不步先人的后尘，举家、举村、举城迁徙。

其次是随着人们生活水平提高，冰箱、汽车的拥有，向空气中排放的氟里昂、甲基碳等化学药品含量的增加，臭氧层日渐耗损、变薄、消失，有的地方甚至出现臭氧“空洞”，地球的环境日趋恶化，生命正受到威胁，世界各地报道皮肤癌和白内障的发病率明显增加，同时也随着紫外幅射的增加，将对植物品种产生消极的影响，豆类、爪果、土豆、蕃茄、甜菜等的质量将会下降，一些作物的价值可能会减少，毒性可能会增加，可以说臭氧层消耗已将地球上每一种生命推向危险之中。

其三，是国人关注、举世瞩目的长江流域和嫩江松花江流域百年不遇的特大洪水灾害，待续2个月，全国21个省、自治区、直辖市的2。4亿人次不同程度，遭受水灾，成千上万的灾民眼看着自己辛辛苦苦亲手建起的家园，倾刻间化为乌有而无家可归，眼看着亲人倾刻间被无情的洪水吞没，这一切均是由于黄河流域长江流域的水源涵养减少，水土流失，森林面积减少造成的。

自然灾害无时无刻不在威胁着动植物的生存，2001年4月秦岭山地持续三天大雪，气温骤降，造成许多植物芽苞、花蕾冻死，干果类植物没有果实，从而造成羚牛、金丝猴、黑熊、野猪等野生动物的食物缺乏。在长保社区茅坪九池村，多次出现羚牛下山残食村民青苗，金丝猴偷食村民包谷棒，在华阳杨家沟枣皮收获季节，狗熊白天与人争抢果实，人们望而生畏。

去年五月份九池两位老人辛辛苦苦积攒了几年，养了十多箱土蜂，一天晚上，听到翻箱倒柜的巨响，借着月光看见一只成体的狗熊正打翻蜂箱一把一把食蜜。去年深秋，由于初雪来的早，干果欠收，我局巡护员在茅坪陈学沟巡护中竟发现一只成体狗熊正在吞食着一只狗熊幼仔的残体。

冬季由于食物的缺乏，许多林木的芽苞被金丝猴吃光了，形成大面积的枯死，在巡护中发现的黑熊尸体有四只之多，自然灾害造成野生动物死亡比别的年份严重。

保护环境，保护生态平衡就是保护人类自己。希望不久的将来能够看到人与自然、经济发展与自然保护，相依相辅，走可持续发展的道路，造就人类与野生动植物和谐相处的生存环境。

Nature is reached for the mankind move floral to multiply to be being offerred haunt the basiccest live need. The mankind is born for a long time in keeping an activity, to announce natural phenomenon, probe the mystery of nature ceaselessly, meanwhile, what there is not nature when be not being had again however is harmonious. A lot of species are in before the mankind was not known, had eradicated, the earthly environment that creates Lai Yisheng to put especially is increasingly exasperate those who reach rich is nearly dried up.

In recent years, the mankind notices, destroying environment while, also got nature v/LITs flog flintily, person and move floral to live got browbeat.

Nature is right human disaster, because the total cycle time of nature oneself is formed,be firstly, be like phenomenon of ell Ni Nuo, form global climate calefacient, cause volcano to erupt, big waterlogged arid disaster.

Because the mankind is right,be secondly natural ask for indefinitely, destroyed ecological balance, if be in our country,very serious desert turns an issue. More than 2000 years ago, boundless and indistinct the brim of 10 thousand lis Taklimakan big desert, edge peacock river is gone to east on oasis of Luo Bu berth, have a beautiful castle- - Lou Lan, freely of alley of the street inside the city, merchant of China and foreign countries gathers, it is photograph of culture of Chinese and Western gets together the bright phearl of a bright of communication. Because people ignored an environment to build, cause desert to be approached to city outline year after year, the river that flows into collect cloth berth plain gradually dried up, salinization degree aggravate of soil, big diversiform-leaved poplar forest dies consequently, forest land turns into desert.

Till 20 centuries 70 time, the people that lives over must the follow of pace forefathers, choose the home, lift a village, lift a city to migrate.

It is as people standard of living rises next, of freezer, car have, wait for the addition of chemical content to the fluorine Lyons that discharges in air, methylic carbon, ozonosphere with each passing day consume, attenuate, disappear, some places appear even ozone " empty " , earthly environment is exasperate with each passing day, life is being browbeaten, world each district reports the incidence of a disease of skin cancer and cataract increases apparently, at the same time also as ultraviolet an ejaculation addition, negative to plant breed generation effect, legume, ungual fruit, potato, tomato, beet the quality that wait will drop, the value of a few crop may decrease, noxiousness may increase, can say ozonosphere is used up already promoted life of the avery kind of on the earth to danger in.

Thirdly, it is catchment of the catchment of compatriots attention, the Yangtse River that attract worldwide attention and tender river Songhua River the calamity of hundred years especially big flood that does not encounter, to be continued 2 months, 2 of 21 province, municipalities of countrywide, municipality directly under the Central Government. 400 million person-time is different degree, suffer flood, by tens of thousands victim eye looks at him work laboriously to build the home that have with one's own hands, the come to naught between the instant and homeless, the eye looks at family member instant by merciless pluvial embezzle, because the fountainhead self-restraint of catchment of the Yangtse River of the Huanghe valley decreases,all these all is, soil erosion, silvan area decreases cause.

Natural disaster all the time is not browbeating move floral to live, hilly area of mountain of the Qin Dynasty lasted 3 days in April 2001 heavy snow, air temperature pelter, cause a lot of plant bud bud, bud to freeze to death, dry fruit plant does not have fructification, cause the food shortage of the wild animal such as takin, golden monkey, blackbear, boar thereby. Growing maintain community cogongrass level ground 9 pools village, appear for many times downhill incomplete feeds the takin villager young crops, golden monkey eats villager maize bar secretly, in skin of jujube of channel of Home Hua Yangyang the crown of the year, black bear is contended for with the person by day grab fruit, people be terrified by the sight of sth or sb.

Last year May 9 pools scrape up of work laboriously of two old people a few years, raised bee of earth of more than 10 box, a day night, hear the blare of ransack boxes and chests, the black bear that borrowing moon to see an adult is forehand turn over beehive to feed sweet. Deep last year autumn, what come as a result of Chuxue is early, dried fruit is owed close, the member that my bureau make one's rounds is protected is protected in make one's rounds of channel of Chen Xue of cogongrass level ground in discover an adult black bear is devouring unexpectedly the incomplete body of young of a black bear.

Winter is lacked as a result of alimental, the bud of a lot of forest luxuriants by golden monkey dispose of, those who form large area is withered dead, in make one's rounds the blackbear body that in protecting, discovers has 4, natural disaster creates wild animal death is more serious than other time.

Protect an environment, protective ecological balance protects him mankind namely. Hope before long can see person and progress of natural, economy and natural protection in the future, photograph of depend on each other complementary, take the way that can develop continuously, bring up what the mankind and harmony of wild vivid plant get along to live environment.