世界人口问题问题---英文版.ppt
《世界人口问题问题---英文版.ppt》由会员分享,可在线阅读,更多相关《世界人口问题问题---英文版.ppt(12页珍藏版)》请在文库网上搜索。
1、Problem of world populationThe worlds most populous country-ChinaAt the end of 2014,Chinas total population of 13.6782 people(excluding the Hongkong Special Administrative Region,the Macao Special Administrative Region and the Taiwan region),an increase of 710 over the previous year.Among them,the m
2、ale population of 70079 people,the female population of 64703 people,the male population is 5376 more than women,the urban population of 74916 people,rural population of 61866 people.Chinas population has accounted for more than 30%of the worlds population,and Chinas population accounts for about 19
3、%of the worlds population,and 12%of the worlds population.The population of China is 30 times more than two countries in Western Europe,about Africa and Latin America.If all the people in China are standing in a row,they can rotate around the earths equator more than 40.Population growth trend and d
4、ensity distribution in ChinaWorld populationPopulation density distribution map of Europe Europes total population of 7.9(1990,including the Asian part of Kazakhstan,Kyrgyzstan,Uzbekistan,Turkmenistan,Tajikistan,not including the European part of Turkey),the worlds total population of 16.7%,after As
5、ia,ranking second in all continents.Average population density is the first place in all continents,and the average population density is 1.2 times higher than the world average.India population is currently about 1210193422 people,and China is now an average of 1600 births,deaths from 900 to 1000 o
6、r so,the population grew by less than 700 million a year,the natural population growth rate of 5/1000,Indias population growth rate of almost three times that of us,a year can increase more than 1000 million people.By the end of 2014,China is 13.678 billion population,India by 12.5 billion count,in
7、view of Chinas future ten years population growth rate is lower and lower,even fully open second year also increased not 100 million live births,and the increasing population of India,ten years is possible.The impact of population growth1 the impact of population growth on natural resourcesOf the ea
8、rth,Sheung Shui,a total of 13.8 million KM3,which 96.53%above into the salt water of the sea,the total amount of the earths fresh water supply for 0.35 billion KM3,accounted for only 2.53%of the total global water.Three quarters of them were in the south,the Arctic ice caps and glaciers.Therefore,hu
9、mans can readily use freshwater accounted for about 20%of all the fresh water in the.And direct from the river and lake water accounted for only 0.5%of all freshwater,can for direct human use and easy to obtain fresh water resources are very limited.Because the growth and living standards of the pop
10、ulation is increasing day by day,some areas in some countries,the demand for water has reached the limits of supply capacity in the region.2 food issues,land issuesWith the increase of population,human demand for food is increasing.According to the International Food Policy Research Institute estima
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 世界 人口 问题 英文