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1、Unit 8Unit 8 Human and nature,China is one of the 12 countries with richest biodiversity in the world,with the various types of terrestrial ecosystems,the top number of species in the northern countries.It is one of the four major genetic resources centers of origin in the world,我国是世界上生物多样性最丰富的12个国家
2、之一，拥有陆地生态系统的各种类型，物种数量居北半球国家第一，是世界四大遗传资源起源中心之一。,Although in the possession of rich biodiversity resources,China faces big pressure of species protection.According to the published in 2003 by the International Union for Conservation of Nature and Natural Resources(IUCN),there are 422 species are threa
3、tened with extinction in China,including 81 kinds of mammals,75 kinds of birds,46 kinds of fish,31 kinds of reptiles and 184 kinds of plants.,然而，在占有丰富的生物多样性资源的同时，中国面临的物种保护压力也是相当艰巨的，根据国际自然与自然资源保护联盟2003年公布的濒危物种红色名录，我国有422个物种面临灭绝的威胁，其中哺乳动物81种、鸟类75种、鱼类46种、爬行动物31种、植物184,The wild animals and plants facing
4、 extinction in our country,The wild animals and plants facing extinction in our country,The wild animals and plants facing extinction in our country,.,Many factors acting together contribute to the loss of biodiversity,1 introduction of foreign invasive species,They take up the space of local animal
5、s and plants,compete with them for the nutrient,make them extinction,destroy the biological diversity.They release chemicals,inhibit the growth of other species,and finally destroy the ecological system,2 Excessive hunting and deforestation,To pursuit of economic interests,people kill a lot of anima
6、ls,deforestation,destruct their habitat,and results in soil erosion.,3 Severe environmental pollution,With the development of scientific and technological level and the improvement of peoples living standards,the environmental pollution is increasing,including air pollution,water pollution and noise
7、 pollution,which lead to the greenhouse effect,acid rain,ozone depletion and etc.The growing environment pollution made the animals and plants destructed.,a variety of organisms is a valuable asset to all mankind.Biodiversity provides people with rich foods,medicines,fuel and other necessities,as we
8、ll as a large number of industrial raw materials for humans survival and development.Biodiversity maintains the ecological balance of nature,provides a good environmental conditions for human survival,and it also has important scientific value.,多种多样的生物是全人类共有的宝贵财富。生物多样性为人类的生存与发展提供了丰富的食物、药物、燃料等生活必需品以及
9、大量的工业原料。生物多样性维护了自然界的生态平衡，并为人类的生存提供了良好的环境条件，生物多样性还具有重要的科学研究价值,Measures to preserve the biodiversity of wildlife,1 To establish nature reserves.Take protective measures on ecosystems,species and genetic level.,2 To improve peoples environmental protection awareness.Educate people to recognize the importance of protecting the environment and wildlife.,3 To make necessary regulations.Severely punish the activities hurmfull to the biodiversity.,Thats all,Zhalong Nature Reserve,
