Population stabilization and resource conservation will lead to the challenges of sustainability. As the century begins, natural resources are under increasing pressure, threatening public health and development.
See other articles in PMC that cite the published article. Abstract The interactions between human population dynamics and the environment have often been viewed mechanistically.
This review elucidates the complexities and contextual specificities of population-environment relationships in a number of domains. It explores the ways in which demographers and other social scientists have sought to understand the relationships among a full range of population dynamics e.
The chapter briefly reviews a number of the theories for understanding population and the environment and then proceeds to provide a state-of-the-art review of studies that have examined population dynamics and their relationship to five environmental issue areas.
The review concludes by relating population-environment research to emerging work on human-environment systems.
Inthe U. National Academy of Sciences published The Growth of World Population 7a report that reflected scientific concern about the consequences of global population growth, which was then reaching its peak annual rate of two percent. InPaul Ehrlich published The Population Bomb 8which focused public attention on the issue of population growth, food production, and the environment.
Clearly, efforts to understand the relationship between demographic and environmental change are part of a venerable tradition. Yet, by the same token, it is a tradition that has often sought to reduce environmental change to a mere function of population size or growth.
Indeed, an overlay of graphs depicting global trends in population, energy consumption, carbon dioxide CO2 emissions, nitrogen deposition, or land area deforested has often been used to demonstrate the impact that population has on the environment.
Although we start from the premise that population dynamics do indeed have an impact on the environment, we also believe that monocausal explanations of environmental change that give a preeminent place to population size and growth suffer from three major deficiencies: They oversimplify a complex reality, they often raise more questions than they answer, and they may in some instances even provide the wrong answers.
As the field of population-environment studies has matured, researchers increasingly have wanted to understand the nuances of the relationship.
In the past two decades demographers, geographers, anthropologists, economists, and environmental scientists have sought to answer a more complex set of questions, which include among others: How do specific population changes in density, composition, or numbers relate to specific changes in the environment such as deforestation, climate change, or ambient concentrations of air and water pollutants?
How do environmental conditions and changes, in turn, affect population dynamics? How do intervening variables, such as institutions or markets, mediate the relationship?
And how do these relationships vary in time and space? They have sought to answer these questions armed with a host of new tools geographic information systems, remote sensing, computer-based models, and statistical packages and with evolving theories on human-environment interactions.
This review explores the ways in which demographers and other social scientists have sought to understand the relationships among a full range of population dynamics e.
With the exception of the energy subsection, the focus is largely on micro- and mesoscale studies in the developing world.
This is not because these dynamics are unimportant in the developed world—on the contrary, per capita environmental impacts are far greater in this region see the text below on global population and consumption trends —but rather because this is where much of the research has focused We have surveyed a wide array of literature with an emphasis on peer-reviewed articles from the past decade, but given the veritable explosion in population-environment research, we hasten to add that this review merely provides a sampling of the most salient findings.
The chapter begins with a short review of the theories for understanding population and the environment. It then proceeds to provide a state-of-the-art review of studies that have examined population dynamics and their relationship to the following environmental issue areas: In the concluding section, we relate population-environment research to the emerging understanding of complex human-environment systems.
The future size of world population is projected on the basis of assumed trends in fertility and mortality.
Current world population stands at 6. The revision of the United Nations World Population Prospects presents a medium variant projection by of 9. All of the projected growth is expected to occur in the developing world increasing from 5.
Africa, which has the fastest growing population of the continents, is projected to more than double the number of its inhabitants in the next 43 years—from million to approximately 2 billion. Globally, fertility is assumed to decline to 2.
The medium variant is bracketed by a low-variant projection of 7. Fertility in the former is assumed to be half a child lower than the medium variant, and in the latter, it is assumed to be half a child higher.Download Citation on ResearchGate | Impact of Population Growth on Environmental Degradation: Case of India | Rapid population growth in a country like India is threatening the environment through.
Environmental impact (I) can be considered in terms of resource depletion and waste accumulation; population (P) refers to the size of the human population; affluence (A) refers to the levels of consumption by that population; and technology (T) refers to the processes used to obtain resources and transform them into useful goods and wastes.
Does the simultaneous occurrence of population growth and environmental decline over the past century indicate that more people translate into greater environmental degradation?
In The Environmental Implications of Population Dynamics, Lori Hunter synthesizes current knowledge about the influence of population dynamics on the environment. Impact Of Population Growth On The Environment Environmental Sciences Essay. Print Reference this.
Disclaimer: A good example to substantiate the direct impact a growing population would have on minerals would be the example on Spain.
For years, the efforts to support the growing population in Spain, have resulted in major expansion of. Does Population Growth Impact Climate Change? To what extent does human population growth impact global linked in their collective global environmental impact,” reports the Global.
Effects of Population Growth on our Environment! One of the factors responsible for environment degradation is population growth or population density. In particular, population density plays the most important role in shaping the socio-economic environment.
Its effects are felt on the natural.