Population,resources, environment: an uncertain future

This issue analyzes the economic and environmental consequences of rapid population growth in developing countries (LDC), the population decline in developed countries, the limits that life on a finite planet impose on economic and demographic expansion and progress, and the proper governmental response to promote the welfare of its current and future citizens. The links between population growth, resource use, and environmental quality are too complex to permit straightforward generalizations about direct causal relationships. However, rapid population growth has increased the number of poor people in LDC, thus contributing to degradation of the environment and the renewable resources of land, water, and nonhuman species on which humans depend. Demands of the rich industrial countries have also generated environmental pressures and have been foremost in consumption of the nonrenewable resources of fossil fuels, metals, and nonmetallic minerals. On the other hand, population and economic growth have also stimulated technological and management changes that help supply and use resources more effectively. Wide variations in the possible ultimate size of world population and accelerating technological change make future interrelationships of population, resources, and the environment uncertain as well as complex. Those interrelationships are mediated largely by government policies. Responsible governments can bring about a sustainable balance in the population/resource/environment equation by adopting population and development policies that experience has shown could reduce future population numbers in LDC below the additional 5 billion indicated in current UN medium projections. This coupled with proven management programs in both LDC and developed countries could brake and reverse the depletion and degradation of natural resources.     

超大城市人口—自然资源系统可持续发展水平研究——基于Laplace混合政策模拟

人口增长与集聚为超大城市的发展提供动力,也给其自然资源系统带来极大扰动,使之呈现脆弱性特征;为实现超大城市人口—自然资源可持续发展,近年来政府实施了大量调控政策,但因对城市人口—自然资源系统的复杂互动难以精确量化,导致超大城市人口与自然资源关系治理困难重重。基于此,以北京市为例构建人口—自然资源系统可持续性评价框架,从政策干预视角,分析不同类型调控政策(如人口调控、技术改进、资源管制等)与人口、自然资源的因果关系,并利用Laplace准则结合决策者风险喜好,模拟混合政策干预对人口—自然资源系统可持续性带来的影响。结果显示:政策干预是保证北京市人口—自然资源系统可持续发展的重要手段,其中,人口调控政策是北京市人口—自然资源系统可持续性变动的主要影响因素,资源管制和技术改进是次要影响因素;随着政策干预强度的增加,由于人口系统安全性和自然资源系统脆弱性的互动博弈,北京市人口—自然资源可持续性逐渐趋于稳定;在Laplace情景下,人口安全性减弱了1.82%,损失不大;而自然资源脆弱性减弱了12.13%,收益较高;最终使得人口—自然资源系统可持续性增强了6.23%。因此,对于超大城市的政策干预需...     

A worldwide view of population trends

The UN Population Commission held its 20th session in New York from 29 January to 9 February, with an agenda that included reviews of UN action to implement recommendations of the 1974 World Population Conference; of progress in population work by the UN Population Division; and of the medium-term plan, 1980-1983. Of a total of 29 countries and 22 organizations participating, 5 countries were Asian--India, Indonesia, Japan, the Philippines, and Thailand. The report on monitoring of trends and policies was the most detailed examination of the global demographic situation yet available, and revealed the following facts: 1) 80% of the population of the developing countries are in countries which the governments have considered that a slower rate of population growth would be desirable; 2) among developed countries, nearly all governments preferred their rate of population growth to remain as high as or become higher than at present; 3) among the developing countries, 6 of the 8 nations having a population greater than 50 million wished to reduce their rate of growth; 4) 80% of all countries considered the rate of population growth the be of basic importance for development; and 5) with respect to mortality, about 75% of all governments of developing countries considered the prevailing level to be unsatisfactory; while among developed countries the same proportion considered the prevailing level to be acceptable. As a result of its deliberations on the report, the Population Commission endorsed the Population Information Network concept of a decentralized network for the coordination of regional, national, and nongovernmental population information activities.     

Feeding a growing world

Technology allows for the increased production of food to meet the demands of a rapidly growing population. However, in poor countries, technology may not be economically or environmentally affordable. The balance between food supply and population growth will depend upon government's ability to design and enforce policies and programs to deal with increased population, poverty, and environmental degradation. Approaches will be specific to a country's needs. In Bangladesh, food aid will be needed. In Zaire, political reform will be required. Many countries will have to shift from investments in war to social development. Three kinds of countries will experience difficulty in feeding their populations: 1) countries with little or no reserves of fertile land or water and insufficient funds for food imports; 2) countries that have sufficient reserves of land and water but suffer from government policy failures and neglect of agriculture; and countries with political instability and civil war, which invariably are linked with famine and drought. The future prospects will be a slow increase in dietary intake in most regions, fluctuations in food availability and prices, increased crop yields and land under cultivation, and slower expansion of agricultural lands due to environmental constraints. Pessimists have predicted increased environmental costs of food production due to soil erosion, pesticide contamination of soil and water, loss of species, and fertilizer run-off. Optimists have argued that new lands can be brought under cultivation and investments in agricultural research can help to increase food productivity. As Population Council vice president in the Research Division, John Bongaarts has reiterated that a positive outcome is more likely if population growth can be stopped.     

Population and the environment: Polls,policies, and public opinion

Although recent academic and popular attention has argued for a wedding between population and environmental problems and policies, the scientific knowledge base for these topics has grown separately and at differential rates. Environmental research has grown faster than population research, while the joint treatment of these topics remains in its infancy. International polls that have included many questions concerning environmental attitudes have included far fewer on population. The few surveys on population attitudes have ignored the environment. The World Fertility Survey and the Demographic and Health Survey are fertility, rather than population, surveys. They have been useful in precipitating national policies on family planning, but are poor models for needed attitudinal and cognitive research on population and the environment. Some contemporary polls, such as the UNDEP sponsored poll conducted by the Louis Harris Agency, have serious methodological defects. Others, such as the 1992 Gallup poll, contain valuable data from which future surveys could profit. The conclusion outlines the need for a new multinational survey of Population/Environment Knowledge, Attitude and Practice (PEKAP).An earlier version of this paper was published in Clarke, John and Leon Tabah (1995).Population—Environment—Development. Paris: CICRED.     

1980 ASEAN programme roundup: a model in the making

Association of Southeast Asian Nations (ASEAN) experts and heads of national population programs held their 4th meeting in Singapore from November 24-28, 1980. Program heads resolved to take steps to link their national activities in the population field with those of the ASEAN Population Program and carry out studies and a joint programming exercise in 1981. Progress reports on the following Phase 1 projects were given: 1) integration of population and rural development policies and programs in ASEAN countries including Indonesia, Malaysia, Philippines, Singapore, and Thailand; 2) development of an inter-country modular training program for personnel in population and rural development; 3) multi-media support for population programs in the context of rural development in ASEAN countries; 4) utilization of research findings in population and family planning for policy formulation and program management in ASEAN countries; and 5) migration in relation to rural development. Phase 2 projects approved by ASEAN country participants were also discussed: 1) institutional development and exchange of personnel, 2) women in development, 3) developing and strengthening national population information systems and networks in ASEAN countries, 4) population and development dynamics and the man/resource balance, 5) studies on health and family planning in ASEAN countries, 6) population migration movement and development, and 7) development of ASEAN social indicators.     

A developing countries' perspective on population,environment, and development

The subject of this paper is the political behavior of developing states (the South) on issues of population, environment and development. It attempts to understand why the South is so weary of international population policy in the name of the environment. It argues that the South's response is shaped by five inter-related concerns about responsibility, efficiency, efficacy, additionality, and sovereignty. That is, the developing countries, (a) do not want their population growth to be held responsible for global environmental degradation, (b) argue that a more efficient solution to the environmental crisis is consumption control in the North, (c) believe that development remains a necessary condition for efficacious population control, (d) are weary of the population priorities of the North distracting international funds from other developmental goals of the South, and (e) are unprepared to accept any global population norms which challenge their fundamental political, cultural or religious sovereignty. It is maintained that these concerns have historically guided the positions of the South and remain valid and relevant today. Although, over the last two decades of North-South debate on the subject the nuances within these concerns have evolved, the concerns themselves remain valid and were apparent again at the 1994 International Conference on Population and Development. Finally, it is proposed that although a grand North-South bargain around population-environment-development issues remains unlikely, both sides can gain much from trying to understand - even where they do not agree with - the other's concerns. The purpose of this study is not as much to defend the South's position, as to present it and the rationale behind it.     

Population, Nomadic Pastoralism and the Environment in the Mongolian Plateau

The purpose of this paper is to examine the relationship between population, economic activity and the environment in the Mongolian Plateau. This analysis provides a valuable case study for several reasons. First, it elucidates a specific ecosystem—the steppe—that has not received much attention in the literature and a traditional economic activity consistent with such environment: nomadic pastoralism. Second, the Mongolian Plateau is shared by two entities, with two different economic and social organisation: the Republic of Mongolia and the Inner Mongolia Autonomous Region of the People's Republic of China. Third, these two entities have also experienced two different population dynamics that have resulted in different population densities and population pressure on natural resources. Fourth, environmental degradation does not seem to be a problem in the Republic of Mongolia, while in Inner Mongolia the quantity and quality of the grasslands are in decline.The argument discussed here is that the difference in resource depletion and environmental degradation between the two regions is mainly the result of different population dynamics, which has resulted in different human and animal population densities.     

From Bucharest to Mexico: a decade of changing perceptions

The 2nd International Conference on Population held in Mexico City in 1984 had 3 main objectives: 1) to adopt the plan to changing demographic situations, 2) to enlarge the plan's scope so it can consider new views that have emerged since Bucharest, and 3) to reinforce the plan's operational aspects so that the plan can be applied more effectively. The Mexico conference had significant differences with the Bucharest gathering: 1) greater participation of developing countries, 2) clarification of the role of population and family planning in development, and 3) recognition of the status of women in development. Governments of many developing countries argue that they cannot wait for their countries to modernize sufficiently enough to stabilize their population levels. Participants in the Mexico conference agreed that family planning programs have been successful in reducing fertility at relatively low cost. The goal of a development-oriented population policy is to improve the people's standard of living by lowering fertility rates, improving health conditions and life expectancy, improving population distribution, and adopting sound economic policies. The overall objective of population policy should not be confined only to growth, distribution, and other demographic aspects; it is imperative that human life and human dignity be upheld.     

Toward a national population policy

Canada has notexplicit national population policy although various policies do have an effect on the size, rate of growth, distribution, and composition of the nation's population. Traditionally, Canada has been pronoatalist, particularly favoring immigration. In response to the 1974 Bucharest World Population Conference, the Canadian government solicited public testimony regarding a population policy for the nation. Environmentalists urged population limitation with a view to maintaining the ecosystem. Social justice and reallocation of resources were urged by an 2nd group. The quality of life argument was used by both proponents and opponents of population limitation. Canada has increased its world assistance for economic and population activities. With 1 of the highest growth rates of the developed countries, (in 1976-1977, 1.3% vs. .8% for the U.S. and .4% for France), Canada needs to propound a slow growth ethic. With future fertility at replacement level, Canada will look to immigration for population input.     

Urban growth in Korea, 1970-1980: an application of the human ecological perspective

This study supports the ecological perspective proposed by Duncan (population, environment, organization, and technology) explaining urban population growth. Data were obtained from the 1970 and 1980 Korean Population Census and Korean Municipal Yearbook on cities with a minimum size of 20,000-50,000 people (108 cities and towns). Urban growth is most strongly influenced by indigenous labor surplus and the population potential of the city to be in contact with another city. Nine multiple regression variables explained just under 66% of the variance in urban growth. Net migration was influential among those aged 15-24 years. The extent of differentiation of industry affected net migration only among those aged 15-24 years and those aged 35-44 years. Population redistribution was more affected directly by changes in industrial organization, and migration was affected indirectly by environmental and technological effects on organization. Urban growth through migration of older age groups was affected by government expenditure on public works. Urban growth was not much affected by transportation/communication concentration, manufacturing concentration, urban labor surplus, population size, and site. Urban growth was viewed as the interaction between the unemployment rate and the urban wage, following Todaro's equilibrium models. In Korea, larger cities only grew faster during the 1960s. By the 1970s, upper middle-sized cities grew faster. Location was not a significant factor in explaining urban growth, but growth was rapid along a corridor within 100 km from Seoul and 50 km from Pusan, the second largest city in Korea. Caution was urged in interpreting Korea's ecological urban growth patterns as indicative of developing countries.     

The future of world population

Analysis of future population trends reveals a regional pattern of continued growth, dependent upon basic assumptions about demographic factors and the priority given to human rights, socioeconomic development, and global interdependence. Developing countries will account for 85-87% of world population growth, and the most rapid increase will occur in Africa. The optimum size of population remains debatable. Ecologist argue for a reduction to 1-2 billion people in order to be in balance with nature and maintain a high quality of life. A rapid, but plausible, fertility decline would result in a population of 10 billion by 2070. The lowest feasible UN projection is 8 billion. A 1-2 billion world population would not be feasible without drastic mortality increases and fertility declines. Population control is a highly charged and complex issue; feminists are not about to place responsibility for environmental degradation on women's excess fertility. The spirit of the UN Universal Declaration of Human Rights is that women have the right to determine family size with personal integrity and freedom rather than suffer coercion for the rights of society. Family planning is a necessary ingredient for achieving the goal of desired family size. The quality of life may be undermined by upholding human rights, without recognition of the context of socioeconomic development and global interdependencies. Global economic conditions, political crises, and environmental degradation can undermine even the best national development efforts. The most difficult task ahead is addressing priorities and forming a consensus. Human rights, socioeconomic conditions, and global interdependencies must be satisfied in a mutually beneficial way. When national and global goals conflict, a compromise must be reached. There are many unknowns. The challenge is to "identify a set of policies that will stabilize world climatic conditions, promote economic development, enhance the quality of life, and respect human rights." Investment in human capital, such as education and health, will help women to avoid unwanted pregnancies. Improving the status of women is key to socioeconomic development, human rights, and global interdependencies.     

Our population predicament: a new look

Issued to mark the Population Reference Bureau's 50th anniversary, this issue updates the story of world population presented in its popular predecessor of 1971, "Man's Population Predicament." Estimated at 1/2 billion in 1650, world population reached about 2 billion in 1930, 4 billion in 1975, and is projected to be about 6 billion in 2000. Most of today's rapid growth is occurring among the 3/4 of the world's peoples living in less developed countries where the post-World War II gap between high birth rates and falling death rates has only recently begun to narrow. This growth, coupled with high consumption in developing countries, is putting tremendous pressures on the Earth's resources, environment, and social fabric. New evidence on Europe's population transition and from China, Indonesia, and Thailand in the 1970s suggests that well-designed family planning programs can speed fertility decline but rapid worldwide attainment of replacement level fertility will also require special development efforts and measures that go beyond family planning. Current projections of the world's ultimate peak population range from 8 billion in the mid 21st century to 11 billion in about 2125, depending on when replacement-level fertility is reached. China's drive for a drastic birth rate reduction and the oil crisis might change fertility behavior more rapidly than most demographers have heretofore thought likely.     

Attaining global health: challenges and opportunities

This issue of the Population Bulletin examines health trends in both developed and developing regions using health measures such as mortality and morbidity and the disability-adjusted life year. It also assesses the challenge of improving health worldwide. The authors proposed the following common denominators in the global challenge to improve health: 1) an individual's health status reflects the interplay of many factors such as the physical environment, political stability, and community structure; 2) direct correlation between the population's level of health and educational levels within that population; 3) prudent use of existing resources may contribute to a healthier public; 4) both public sector and private sector resources are vital for obtaining the best health possible; 5) effective infrastructure for health delivery requires fundamental changes in how governments and health system operate; and 6) policies to promote health are key components of community health efforts.     

Prospects for sustainable development: The significance of population growth

There is nothing static about the notion of optimum population. For any given country, region or the world, the optimum population, or maximum acceptable population, depends on a host of related factors: aspirations of a material kind, the state of the environment, the ability of the economy to provide food, shelter, transport, services, consumer durables and other needs. Many countries, such as the U.K., while today enjoying a reasonable standard of living, may not in fact be living within their carrying capacities. The relation between population and development is a dynamic one. Where the trends established by past and current policies are potentially unsustainable, then there is the risk that population levels may compromise the prospects of maintaining living standards and attaining environmental objectives.This paper draws on the recent world modelGlobEcco, to explore the implications of alternative population growth rates for the future of both the industrialised and developing regions of the world. The model is based on ECCO (Evolution of Capital Creation—previously Carrying Capacity—Options): a new integrative procedure which can test out strategies, technologies and rates of population growth aimed at satisfying both economic and environmental aspirations over the long term.     

Assessment of ASEAN population programme

The objectives of the 5th meeting of the ASEAN Heads of Population Program, held at Chiang Mai during November 1981, were the following: to discuss and consider the midterm reviews of some of the Phase 1 projects; to discuss and consider the ASEAN population experts' views on the progress made in the rest of the phase 1 projects; to discuss and consider the progress made in the implementation of the phase 2 projects; to discuss and consider the ASEAN population experts' recommendations on the ASEAN population program in the 1980s based on the report of the programming exercise submitted by the consultant in the expert group meeting; and to discuss administrative and other problems faced by the program implementors in the operationalization of the ongoing ASEAN population projects and provide appropriate directions to solve such problems. As a result of the programming exercise, the meeting established the directions for the future ASEAN population program and strongly recommended the continuation, intensification, and expansion of the ASEAN population program. A total of 12 projects comprise the ASEAN population program: 5 projects under phase 1 and 7 under phase 2. Under phase 1, 1 project has been completed, and the 1st parts of 2 other projects are in the process of implementation. Phase 2 projects, which started in September/October 1980, are all in the process of implementation. The following phase 1 projects are summarized: integration of population and rural development policies and programs; modular training for trainers of population and development agencies in ASEAN countries; multi-media support for population programs in the context of rural development in ASEAN countries; and migration in relation to rural development. The following phase 2 projects are also summarized: institutional development and exchange of personnel; women in development in ASEAN countries; and migration in relation to rural development. The following phase 2 projects are also summarized: institutional development and exchange of personnel; women in development; developing and strengthening national population information systems and networks in ASEAN countries; population and development dynamics and the human resource balance; studies on health and family planning in ASEAN countries; development of ASEAN social indicators; and population migratory movement and development.     

Resources,environment, and population: the nature of future limits

The balance between world supplies of resources and the demands presented by population growth in the recent past, during the period to 2025, and for the long term is examined. Focus is on the issues, the past in terms of socioeconomic indicators, past trends in market places, and specific evidence of depletion; future demands in terms of population projections and growth in per capita demand; resource supplies to 2025; ultimate resource production possibilities; environmental constraints and risks (problems capable of control at reasonable cost, other domestic environmental problems, and potentially severe global problems); and implications. Improvement in socioeconomic indicators, relatively stable resource market prices, along with evidence of resource and environmental changes suggest that thus far the world as a whole has been able to win the race between demand and supply. For the next 50 years, during which a slowdown is projected in population growth rates and resource consumption, the most important problems to be faced are associated with the unequal distribution of resources and the transition problems of moving from 1 resource regime to another in an orderly fashion. For the long term, a projected equilibrium population of 10-12 billion can probably be sustained at a decent standard of living by more equitable distribution of food and shifts from less to more abundant resources. Ultimately, environmental and security problems associated with growing energy production and use such as increasing atmospheric levels of carbon dioxide and nuclear proliferation may be the most difficult to resolve. Although cessation of population growth would help, it does not by itself constitute a solution to the world's resource problems. Both the causes and the symptoms need to be worked on simultaneously. Understanding the true nature of the world's resource and environmental limitations is a 1st step in that direction.     

Planet earth 1984-2034: a demographic vision

In recognition of 1984 as the year of both Orwell's famous futuristic novel and the International Population Conference following up the 1974 World Population Conference, this Bulletin examines the current state of world population and presents the author's speculations on what it might be 50 years from now. World population, now close to 4.8 billion and growing at 1.8%/year, is being shaped by 3 demographic phenomena: prolonged below-replacement fertility in developed nations, perhaps partly in response to the reduced need for workers in the emerging information era; rapid growth despite failing fertility in developing nations, due to earlier rapid mortality decline; and rapid urbanization in developing nations and unprecedented migration from poor to better-off nations. The author's assumptions for nondemographic factors related to population change in the next 50 years are no world war, nuclear or otherwise; global resource adequacy; rapid scientific and technological progress shared equitably; and the demise of capitalism and communism and greatly increased economic aid from advanced to less advanced nations. For 2034 the author envisages nations divided into service/information societies (4% of global population) where immigration balances low fertility to prevent population decline; industrialized nations (38% of total), with fertility close to or at replacement level and growth slowing; developing nations (43%), in sight of replacement level fertility; and least developed nations, with still critical demographic problems but only 15% of the world population. Total population will be 8.03 billion, but growth will be down to 0.8%/year and global zero growth is possible in another 50 years. This relatively optimistic scenario for 2034 will only be possible if mankind acts to see that the stated nondemographic assumptions are borne out.     

Human population as a dynamic factor in environmental degradation

The environmental consequences of increasing human population size are dynamic and nonlinear, not passive and linear. The role of feedbacks, thresholds, and synergies in the interaction of population size and the environment are reviewed here, with examples drawn from climate change, acid deposition, land use, soil degradation, and other global and regional environmental issues. The widely-assumed notion that environmental degradation grows in proportion to population size, assuming fixed per capita consumption and fixed modes of production, is shown to be overly optimistic. In particular, feedbacks, thresholds, and synergies generally amplify risk, causing degradation to grow disproportionally faster than growth in population size. Based on a presentation to the Bixby Symposium on Population and Conservation, UC Berkeley, May 2006.     

Population growth, development and the environment

When Population Studies was founded in 1946 a main preoccupation of demographers and of the public was the prospective decline of the British population, and the falling off of its quality because on the average a poor family had more children than a better-off one. Over the course of the 50 years interests have shifted to the aging of populations as births decline and mortality improves; immigration, immigrants being welcomed for the decades after the war, and subsequently facing hostile political pressures; environmental degradation and the spread of new diseases. The fall in the birth rate, required both for development and for protection of the environment, is spreading from the original industrialized countries of Europe and America to Asia, somewhat more slowly to Latin America, slowest of all to Africa.