World demographics 2020 population, age, sex, trends. The size and distribution of the worlds christian population. Population density is the ratio of people to physical space. It is, however, not to suggest that population distribution on the earth surface is determined by physical factors alone, for within the broad framework of physical attractions and constraints, cultural factors strongly influence the way mankind is distributed over the earth hornby and jones, 1980. In 1990 it reached 6 billion people this rapid growth in population has been called a population explosion. The higher population growth rates in the tropics will increase the percentage of the global population exposed to infection risk to above 50% table 1, but, surprisingly, the proportion of the nfp outside afro will remain largely unchanged at approximately half 46%. Nearly ten years have passed since the first efforts to render population data. This statistic shows the distribution of the global population as of mid2019, by continent. The map above shows that world population distribution is uneven.
Physical factors that affect population distribution include altitude and latitude, relief, climate, soils, vegetation, water and location of mineral and energy resources. Factors influencing global population distribution global population density population distribution is the spread of people across the world, ie where people live. Global population distribution by continent 2019 statista. The influence of climate on global population distribution. The united states comes in third with just under 325 million residents. In most countries of the world the geographic distribution of the population is not even with varying degrees of concentration of population giving rise to varying. On the whole, the old world is more populous than the new world. Pdf evaluating the total numbers of people at risk from infectious disease in the world requires not just tabular population data, but data that. This statistic shows the proportion of selected age groups of the world population in 2019, by region. The nature of the cartographic record enabled global and regional patterns in the spatial limits of malaria to be investigated at six intervals between 1900 and 2002. Population, sample and sampling distributions i n the three preceding chapters we covered the three major steps in gathering and describing distributions of data. National oceanic and atmospheric administration noaa. Several regions show a highly focal population distribution, with 90% of the population concentrated in less than 10% of the land surface, such as in south africa, namibia, and along the north and east coasts fig.
Population density is the number of people living in a particular area usually 1 square kilometre. Prbs world population data sheet is an excellent reference and data analysis tool. Global spatiotemporally harmonised datasets for producing. Spatial distribution of population and urban land use 2. Global analysis of urban population distributions and the. Global magnitude of visual impairment caused by uncorrected refractive errors in 2004.
Global spatiotemporally harmonised datasets for producing highresolution gridded population distribution datasets christopher t. Researchers interested in the sustainability of groundwater depletion used sedacs gridded population of the world gpw v3 population count data for 2000 to find that approximately 1. The worlds overall population density is 50 people per km. As of mid2019, about 26 percent of the worlds population were under 15 years old. The percentage of the global population at risk has decreased from 77% at the turn of the 20th century to a low of 46% in 1994. Population and distribution a simple resource introducing the themes of population density and distribution. This area contains a large land area and a relatively temperate climate. This expanding human presence has dramatically changed the south. Email your best one to mr podbury or post on the facebook fan page and they could be featured on this site. Countries in the world by population 2020 this list includes both countries and dependent territories. Our widely referenced world population data sheet has been produced annually since 1962. Of the several methods of describing the spatial distribution of population the simplest way is percentage distribution of population over the geographical areas.
Population density and distribution population density. Population geography is a division of human geography. Young children and older people as a percentage of global population. Es mates of visual impairment have been derived at global level and in the six who regions. Global population distribution scool, the revision website. International population reports, p95161, an aging world. Geographers study population distribution patterns at different scales.
This figure increased to 48% in 2002 due to population growth in an unchanged geographic distribution. Areas of high population density tend to be located between 20 and 60n. This chapter examines the spatial distribution of the population of. Chapter 2 spatial distribution and density of population 2. Sep 20, 2019 this statistic shows the distribution of the global population as of mid2019, by continent.
Data article global spatiotemporally harmonised datasets for producing highresolution gridded population distribution datasets christopher t. It took over 200,000 years of human history for the worlds population to reach 1 billion, and only 200 years more to reach 7 billion. Nieves a, graeme hornby a,e, kytt macmanusc, parmanand sinhad, maksym bondarenkoa. Asia alone holds almost 60 per cent of the global population and. The major causes of visual impairment and of blindness have been determined. This project focuses on global population density in relation to demographic figures and environmental factors. Distribution refers to the fact that the area is inhabited. The median represents population density in an average grid cell within a particular climate bin. Global population distribution the term population density is used to describe the pattern of where people live in the world. Some areas have a high population density while others have a low population density. By contrast, 24% of the people living in the global south are christian. Pdf the landscan global population distribution project. The population estimates and projections presented in the world population.
In the middle of the year 2003, the worlds population was estimated at 6,314 million spread over a surface area of nearly 52 million square miles or 6 million square kilometers. Asia alone holds almost 60 per cent of the global population and includes the two most populous. Previously published estimates of the size of the global muslim population have ranged widely, from 1 billion to 1. We described procedures for drawing samples from the populations we wish to observe. Another way of looking at the distribution of christians around the world is by region. These datasets demonstrate an enormous improvement over the conventional. Globalization, development and implementation of new technologies, new.
Students consider the characteristics of densely and sparsely populated areas and then complete a mapping activity to help them understand how the population is spread out globally. To evaluate the optimal resolution for the study of disease, the native resolution of the data inputs as well as that of the resulting outputs are discussed. Population change the worlds population is growing very rapidly. What is the global population distribution answers. Advances in remote sensing, dasymetric mapping techniques, and the everincreasing availability of spatial datasets have enhanced global human population distribution databases. In addition, this report provides updated global population estimates, as of 2015, for christians, muslims, religious nones and adherents of other religious groups. The influence of climate on global population distribution 3 high population density i. Population distribution is the spread of people across the world, ie where people live. The global distribution and population at risk of malaria. Figure 3a shows the spatial distribution of population density at a global scale. Topic 1 global population density and distribution test yourself on topic 1. Social and economic indicators of development influence population growth including birth rates and death rates whilst physical and human factors affect population distribution in a country. A study of population distribution school learning resources. Factors influencing global population distribution.
Factors influencing global population distribution bbc. Continental physiography, climate and the global distribution of human population christopher small 1 and joel e. Topic 1 global population density and distribution. Population distribution pdf internal migration, population distribution and development. The term population density is used to describe the pattern of where people live in the world.
It is important to note that most of the physical factors influence population distribution only indirectly through climatic conditions. Click on the name of the country or dependency for current estimates live population clock, historical data, and projected figures. Water balance of global aquifers revealed by groundwater footprint. The role and potential of global distribution system amadeus for tourism development at the global level ljiljana radulovic a phd student at mediterranean university, mts montenegro tourism school marsala tita street, bar, montenegro abstract. For national 5 geography revise the ways in which population growth and distribution is affected by physical and human factors. The report indicates that the worlds population reached 7. The purpose of this paper, therefore, is to discuss the population distribution and population density as observed in the 2002 population and housing census. Figure 3a shows the spatial distribution of population density at. Global population distribution and urban land use in. In 2011, the global population reached the 7 billion mark, and today, it stands at about 7.
Population distribution is a term that refers to where people live. Save each of the tweets as a pdf options at the bottom of the tweet. The following series of short activities allows students to access a wealth of data on the world, regions, and. Percentage distribution of population aged 50 and over by number of surviving children for. It will attempt to establish a relationship between. Population distribution and density are usually notated by how many people live per square mile or square kilometer. Not surprisingly, the largest countries in the world in terms of population are china and india, with both countries now having populations of well over a billion. Evaluating the gains in resolution refinement deborah balk gregory yetman center for international earth science information network ciesin columbia university p. With more than 50 countries, including the united states, scheduled to conduct a census in the coming year, this years data sheet focuses on censuses around the worldfrom the first known census by the babylonian empire to malawis census taking using tablet technology. The workingage population is expected to stay at one half of the.
Global population age structures and sustainable development. The way in which people are spread across a given area is known as population distribution. Teachers are encouraged to have their students use the data sheet for a variety of topics and activities. Identification of population growth and distribution, based on urban.
Mapping global urban and rural population distributions ciesin. As is evident, population distribution in the world is marked with a great amount of variation. The results also hi ghlight the issue s involved and accur acy that can be. Unequal distribution of risks in later life between developed and developing countries article pdf available in global social policy 152 july 2014 with 441 reads. Physical and human factors affecting global population. This millions of humanity is distributed over the earth in a very uneven manner. Lloyd a, heather chamberlaina,b, david kerra, greg yetman c, linda pistolesic, forrest r. World population prospects 2019 population division the united. Distribution of the world s population by region, 2017 world s population in 2017. Population distribution, urbanization and climate change. World population growth this article is focusing on the history of population growth up to the present. Chapter 2 spatial distribution and density of population.
It took hundreds of thousands of years for the world population to grow to 1 billion then in just another 200 years or so, it grew sevenfold. New perspectives for mapping global population distribution using. It is worked out by dividing the total population of a place by its area. Global data 2010, population growth and ageing pdf, 97kb. Prb projects world population rising 33 percent by 2050 to nearly 10 billion. There is considerable interest in the future distribution of human population. This dramatic growth has been driven largely by increasing numbers of people surviving to reproductive age, and has been accompanied by major. This reflects the fact that the total population of the global south is about 4. It shows the relationship between a population and the size of the area in which it lives. Data based on the latest united nations population division estimates.
Census data at global scales the spatial distribution of human population must be inferred from proxies. The major reason for population changes, whether in an individual country or for the whole world, is the change in birth and death rates. Distribution of the worlds population by level of total fertility, 1990, 2019 and 2050. In demographics, the world population is the total number of humans currently living, and was estimated to have reached 7. We show how the world population grew over the last several thousand years and we explain what has been driving this change. On a surface area of little more than 23 per cent, asia alone accommodates more than 60 per cent of the world population. Distribution of the worlds population by region, 2017 worlds population in 2017.
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