Moves towards old age and developed country population old agedevelopment while the world population， the Chinese population old agealso is The population old age production， is preciselythe society progresses， the economical development The Chinesepopulation transforms was generally considered the beginningestablishes new China， at first was the mortality rate obviously andrapidly But the nationwide fertility rate transfers 变则 thebeginning to 20th century 70's initial period country birth controlpolicy involvement， and rapidly changes the low fertility rate levelby the high fertility rate Thus， the population old age hascaused the question which the labor force population burdenunceasingly increases， has affected our country social economydevelopment， and to corresponding material and the spiritual variousaspects and so on infrastructure， legal system construction set thenew Had issued in view of this situation nation old age committee "theChinese Old age Enterprise Develops" 十15 "Plan"， proposed "十15"period， China is caring for the aged the safeguard， the medicalsafeguard， the social rescue and so on， as well as the old ageenterprise infrastructure construction， the old age industry， aspectand so on old age spirit culture life must realize goal and Wealready must correctly understand the Chinese population old ageformation reason， the basic characteristic， the development tendencyas well as possibly produce the social economy consequence， needs toclarify the population old age to the social economy movement and thesustainable development Only this， can enhancepolicy-making the scientific nature and the feasibility， solves thegood population old age problem， for implements the sustainabledevelopmental strategy creation advantageous population Through to the population old age scientific connotation limits， isclear about the our country population old age Through topopulation old age evolution process research， key elaboration ourcountry population old age characteristic and its to economy， societyand family and so on various aspects influence， thus solves owninsufficiency， proposes the solution population old age questioncorresponding countermeasure 关键词：Key word: Population old age population burden old age social securitysustainable development
这里有一篇文章是关于世界人口增长的。UN 'concerned' by world population growth trends Fertility must drop below replacement level in order to stabilise the world population says a UN The world population growth rate must slow down significantly to avoid reaching unsustainable levels， says a new UN To have a reasonable chance of stabilising world population， fertility must drop to below "replacement level"It must then be maintained at that level for an extended period， says the This replacement level is the fertility level at which a population replaces itself from one generation to the The world population is already poised to reach 7 billion later this year and this figure potentially could double to 14 billion by 2100 if action is not “Start QuoteEven countries with intermediate fertility need to reduce it to replacement level or below if they wish to avoid reaching unsustainable population levels”End Quote Hania Zlotnik Director， UN Population Division This is of particular concern for the least developed countries worldwide， which are growing at the fastest rate and are already the most vulnerable to The UN Population Division have produced six projections of potential future population change based on different changes to fertility level and other In the medium scenario， world population peaks at 4 billion in 2070 and then starts to However for this to happen， fertility needs to decline significantly in most developing No guarantee In recent years， there has been widespread acceptance of the medium scenario as almost a However Hania Zlotnik， the Director of the UN Population Division says there is "no guarantee that this scenario will become a reality because high-fertility countries may not reduce their fertility fast enough and countries with intermediate fertility levels may see them stagnate above replacement level""Even countries with intermediate fertility need to reduce it to replacement level or below if they wish to avert continuous population increases to unsustainable "Replacement level is the level of fertility at which a population exactly replaces itself from one generation to the In high mortality countries it is 5 children per woman and in low mortality countries it is 1 children per The high and low projections reveal how even relatively small deviations from replacement-level fertility can lead to dramatic changes in the size of the world The high scenario， where fertility remains mostly between 2 and 3 children per woman， would lead to a world population of nearly 30 billion in 2300The report says that "even with significant fertility reductions， Africas population will likely increase by 150% by 2100 and many of its countries will see their populations increase four-fold or more"It warns that although the reduction of fertility may be inevitable， considerable effort over the next few decades is required to make it a 地址：
We know， the population problem has been the world's largest By the year 2000， the world population reached 6 billion， over-population will bring us many problems， for example can cause traffic congestion， employment difficulty， and so At present， the development of China's family KouZhan four 5 of all over the We China's family planning policy， it is effective control the number of population， reduced the burden。 你可以再适当添点内容 (*^__^*) 嘻嘻……
