共查询到20条相似文献，搜索用时 10 毫秒
1.
2.
3.
4.
5.
6.
7.
Stan Becker 《Demography》2013,50(6):2173-2181
In his PAA presidential address and corresponding article in Demography, David Lam (Demography 48:1231–1262, 2011) documented the extraordinary progress of humankind—vis-à-vis poverty alleviation, increased schooling, and reductions in mortality and fertility—since 1960 and noted that he expects further improvements by 2050. However, although Lam briefly covered the problems of global warming and pollution, he did not address several other major environmental problems that are closely related to the rapid human population growth in recent decades and to the progress he described. This commentary highlights some of these problems to provide a more balanced perspective on the situation of the world. Specifically, humans currently are using resources at an unsustainable level. Groundwater depletion and overuse of river water are major problems on multiple continents. Fossil fuel resources and several minerals are being depleted. Other major problems include deforestation, with the annual forest clearing globally estimated to be an area the size of New York State; and species extinction, with rates estimated to be 100 to 1,000 times higher than background rates. Principles of ecological economics are presented that allow an integration of ecology and economic development and better potential for preservation of the world for future generations. 相似文献
8.
9.
10.
How the World Survived the Population Bomb: Lessons From 50 Years of Extraordinary Demographic History 总被引：2，自引：0，他引：2
Lam D 《Demography》2011,48(4):1231-1262
The world population will reach 7 billion in late 2011, a demographic milestone that is causing renewed attention to the challenges
caused by population growth. This article looks at the last 50 years of demographic change, one of the most extraordinary
periods in demographic history. During this period, world population grew at rates that have never been seen before and will
almost surely never be seen again. There were many concerns about the potential impact of rapid population growth in the 1960s,
including mass starvation in countries such as India, depletion of nonrenewable resources, and increased poverty in low-income
countries. The actual experience was very different. World food production increased faster than world population in every
decade since the 1960s, resource prices fell during most of the period, and poverty declined significantly in much of the
developing world. The article considers the economic and demographic explanations for the surprising successes of this important
period in demographic history. It also looks at regions that have been less successful, especially Africa, and at the lessons
for dealing with the important challenges that still remain. 相似文献
11.
12.
《当代中国人口》2000,(Z1)
Chinese women's fertility rate declined to belowthe replacement level in the early 1990s.However, a significant disparity in populationdevelopment exists between regions due to unevensocioeconomic development and different degrees towhich the family. planning program is implemented.China can be distinctly divided into three parts :eastern, central and western, based on different levelsof economic development, natural endowments,topographical conditions and access to transportation.Accordingly,… 相似文献
13.
14.
15.
16.
17.
In this paper we follow a lead provided by Basu and Basu [‘The Greying of Populations: Concepts and Measurement,’ Demography India 16, pp. 79–89], in order to advance a class of ‘agedness’ indices which, because they have been motivated by analogous considerations in the poverty measurement literature, can find application in that area of enquiry as well. The properties of the proposed indices are discussed, and illustrations of empirical application are provided. The note is intended as a contribution to the larger enquiry into the measurement of development indicators. 相似文献
18.
《当代中国人口》2013,(5):37-38
The thematic publicity activity marking the 2013 World Population Day, jointly sponsoredby National Health and Family Planning Commission （NHFPC）, Central Committee of the Communist Youth League and China Family Planning Association （CFPA）, was held on July 11, 2013 at Renmin University of China. Mine. Li Bin, Minister of NHFPC, 相似文献
19.
David A. Swanson Alan Schlottmann Bob Schmidt 《Population research and policy review》2010,29(1):47-63
Small area population projections are useful in a range of business applications. This paper uses a case study to show how
this type of task can be accomplished by using the Hamilton–Perry method, which is a variant of the cohort-component projection
technique. We provide the documentation on the methods, data, and assumptions used to develop two sets of population projections
for census tracts in Clark County, Nevada, and discuss specific factors needed to accomplish this task, including the need
to bring expert judgment to bear on the task. Our experience suggests that the Hamilton–Perry Method is an important tool
and we advise considering it for small forecasting needs in the private sector. 相似文献
20.
《当代中国人口》2007,(Z1)
In the remote and impoverished areas in China,many families are incapable of paying operation expense as they are poor;their children are bearing the discrimination from the society and huge pressure thereof as they cannot afford for the operation for curing their cleft palate.As lacking of money,many children suffering from this disease have lost their best time for the repairing surgery. 相似文献