| A | B |
|---|
| agricultural density | number of rural residents per unit of agricultural land |
| arithmetic density | number of people per square unit of land |
| carrying capacity | the maximum number of people an area can support on a continuing basis |
| cohort | population group with common characteristics; group used for stats |
| cbr | number of births per 1000 people |
| cdr | number of deaths per 1000 people |
| crude densiy | number of people per square unit land. |
| demographic equation | P2 = P1 + cbr - cdr + IM - OM |
| demographic transition | 4 stages of demographics that most places go through. high b and d rates, lower d rate, lower b rate, low b and d |
| demography | study of populations |
| dependency ratio | (old and yound / productive ) x 100 |
| doubling time | time period required for a poplation to increase by 100% |
| ecumene | the part of the earths surface that is suitable for permanent human settlement |
| homeostatic plateau | equillibream of population and environment (similar to carrying capacity) |
| J curve | exponential growth curve |
| malthus | english economist, demographer, and cleric who suggested that unless self-control, war, or natural disaster checks population it will increase exponentially as food production increases linear |
| mortality rate | number of deaths per 1000 people |
| natural increase | the growth of a population through excess of births over deaths. |
| neo malthusianism | advocacy of population controls |
| nonecumene | portion of the earth's surface that is uninhabited or temporarily uninhabited |
| over population | value judgement that the resources of an area are insufficient to sustain its present population |
| physiological density | number of persons per square unit of cultivable land |
| demographic momentum | tendency of a population to grow despite family planning because of a large cohort of young people |
| population density | number of persons per unit area of land |
| population geography | a division of human geography concerned with spatial variations in distributions, composition, growth, and movements of populations |
| population projection | a statement of a population's future size, age, and sex composition based on application of stated assumptions to current data |
| population pyramid | a bar graph in pyramid form showing the age and sex composition of a population, usually a national one |
| rate of natural increase | birth rate minus death rate |
| rate | frequency of an events occurence during a specified time period |
| replacement level | number of children per woman that will supply just enough births to replace parnets and compensate for early death. 2.1-2.5 |
| s curve | flattening of an exponential curve |
| total fertility rate | average number of babies per woman |
| zero population growth | births = deaths and immigration = emmigration |
