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Multilingual Demographic Dictionary, second unified edition, English volume

Difference between revisions of "Intrinsic rate of natural increase"

Multilingual Demographic Dictionary, second unified edition, English vol.
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(Etienne van de Walle et al., second 1982 edition)
 
(Etienne van de Walle et al., second 1982 edition)
 
(3 intermediate revisions by the same user not shown)
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<!--'''Intrinsic rate of natural increase'''-->
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<!--'''intrinsic rate of natural increase'''-->
{{TextTerms|S=703|P=70|
+
{{TextTerms|S=703|P=70|Ed=II|CompleteIndexTerm=(INTRINSIC rate of natural increase)| content=
[[70#703|703]]-1 {{TofT|Lang=en|Ed=II|N=1|Te=Intrinsic rate of natural increase}}
+
{{NewLineT|S=703|N=1}} {{
{{TofT|Lang=ar|Ed=II|N=1|Te=معدل الصميم للزيادة الطبيعية}}
+
TofT|Lang=en|Ed=II|N=1|Color=yes|Te=intrinsic rate of natural increase}}{{
{{TofT|Lang=de|Ed=II|N=1|Te=Intrinsische Wachstumsrate}}
+
TofT|Lang=ar|Ed=II|N=1|Te=معدل الصميم للزيادة الطبيعية}}{{
{{TofT|Lang=es|Ed=II|N=1|Te=Tasa intrínseca de crecimiento natural}}
+
TofT|Lang=cs|Ed=II|N=1|Color=yes|Te=vnitřní míra přirozeného přírůstku}}{{
{{TofT|Lang=et|Ed=II|N=1|Te=Stabiilseks iibekordajaks}}
+
TofT|Lang=de|Ed=II|N=1|Te=stabile Wachstumsrate}}{{
{{TofT|Lang=fr|Ed=II|N=1|Te=Accroissement naturel}}
+
TofT|Lang=de|Ed=II|N=1|SubN=2|Te=intrinsische Wachstumsrate}}{{
{{TofT|Lang=ja|Ed=II|N=1|Te=安定人口増加率(または真性自然増加率)}}
+
TofT|Lang=es|Ed=II|N=1|Color=yes|Te=tasa intrínseca de crecimiento natural}}{{
{{TofT|Lang=ru|Ed=II|N=1|Te=Истинным коэффициентом естественного прироста}}
+
TofT|Lang=fr|Ed=II|N=1|Te=taux intrinsèque d’accroissement naturel}}{{
{{TofT|Lang=zh|Ed=II|N=1|Te=内在自然增长率}}
+
TofT|Lang=it|Ed=II|N=1|Color=yes|Te=tasso intrinseco di incremento naturale}}{{
<br/>[[70#703|703]]-2 {{TofT|Lang=en|Ed=II|N=2|Te=Stable population}}
+
TofT|Lang=it|Ed=II|N=1|SubN=2|Te=incremento naturale}}{{
{{TofT|Lang=ar|Ed=II|N=2|Te=مجتمع المستقر}}
+
TofT|Lang=ja|Ed=II|N=1|Te=安定人口増加率(または真性自然増加率)}}{{
{{TofT|Lang=de|Ed=II|N=2|Te=Stabile Bevölkerung}}
+
TofT|Lang=pt|Ed=II|N=1|Color=yes|Te=taxa intrínseca de crescimento natural}}{{
{{TofT|Lang=es|Ed=II|N=2|Te=Población estable}}
+
TofT|Lang=ru|Ed=II|N=1|Te=Истинный коэффициент естественного прироста}}{{
{{TofT|Lang=et|Ed=II|N=2|Te=Stabiilseks rahvastikuks}}
+
TofT|Lang=zh|Ed=II|N=1|Color=yes|Te=内在自然增长率}}
{{TofT|Lang=fr|Ed=II|N=2|Te=Population stable}}
+
{{NewLineT|S=703|N=2}} {{
{{TofT|Lang=ja|Ed=II|N=2|Te=安定人口}}
+
TofT|Lang=en|Ed=II|N=2|Color=yes|Te=stable population}}{{
{{TofT|Lang=ru|Ed=II|N=2|Te=Стабильным населением}}
+
TofT|Lang=ar|Ed=II|N=2|Te=مجتمع المستقر}}{{
{{TofT|Lang=zh|Ed=II|N=2|Te=稳定人口}}
+
TofT|Lang=cs|Ed=II|N=2|Color=yes|Te=stabilní populace}}{{
<br/>[[70#703|703]]-3 {{TofT|Lang=en|Ed=II|N=3|Te=Stable age distribution}}
+
TofT|Lang=de|Ed=II|N=2|Te=stabile Bevölkerung}}{{
{{TofT|Lang=ar|Ed=II|N=3|Te=توزعًا عمريًا مستقرًا}}
+
TofT|Lang=es|Ed=II|N=2|Color=yes|Te=población estable}}{{
{{TofT|Lang=de|Ed=II|N=3|Te=Stabilen Altersaufbau}}
+
TofT|Lang=fr|Ed=II|N=2|Te=population stable}}{{
{{TofT|Lang=es|Ed=II|N=3|Te=Composición por edades de la población estable}}
+
TofT|Lang=it|Ed=II|N=2|Color=yes|Te=popolazione stabile}}{{
{{TofT|Lang=es|Ed=II|N=3|SubN=2|Te=Composición estable por edades}}
+
TofT|Lang=ja|Ed=II|N=2|Te=安定人口}}{{
{{TofT|Lang=et|Ed=II|N=3|Te=Stabiilne vanusjaotus}}
+
TofT|Lang=pt|Ed=II|N=2|Color=yes|Te=população estável}}{{
{{TofT|Lang=fr|Ed=II|N=3|Te=Répartition par âges stable}}
+
TofT|Lang=ru|Ed=II|N=2|Te=Стабильное население}}{{
{{TofT|Lang=ja|Ed=II|N=3|Te=安定的年齢分布}}
+
TofT|Lang=zh|Ed=II|N=2|Color=yes|Te=稳定人口}}
{{TofT|Lang=ru|Ed=II|N=3|Te=Стабильной возрастной структурой}}
+
{{NewLineT|S=703|N=3}} {{
{{TofT|Lang=zh|Ed=II|N=3|Te=稳定年龄分布}}
+
TofT|Lang=en|Ed=II|N=3|Color=yes|Te=stable age distribution}}{{
<br/>[[70#703|703]]-4 {{TofT|Lang=en|Ed=II|N=4|Te=Initial age distribution}}
+
TofT|Lang=ar|Ed=II|N=3|Te=توزع عمري مستقر}}{{
{{TofT|Lang=ar|Ed=II|N=4|Te=توزع العمري الإبتدائي}}
+
TofT|Lang=cs|Ed=II|N=3|Color=yes|Te=stabilní věková struktura}}{{
{{TofT|Lang=de|Ed=II|N=4|Te=Ursprünglichen Altersaufbau}}
+
TofT|Lang=de|Ed=II|N=3|Te=stabile(r) Altersaufbau}}{{
{{TofT|Lang=es|Ed=II|N=4|Te=Composición inicial por edades}}
+
TofT|Lang=es|Ed=II|N=3|Color=yes|Te=composición por edades de la población estable}}{{
{{TofT|Lang=et|Ed=II|N=4|Te=Algsest vanusjaotusest}}
+
TofT|Lang=es|Ed=II|N=3|SubN=2|Te=composición estable por edades}}{{
{{TofT|Lang=fr|Ed=II|N=4|Te=Épartition par âges initiale}}
+
TofT|Lang=fr|Ed=II|N=3|Te=répartition par âges stable}}{{
{{TofT|Lang=ja|Ed=II|N=4|Te=初期の年齢分布}}
+
TofT|Lang=it|Ed=II|N=3|Color=yes|Te=distribuzione per età stabile}}{{
{{TofT|Lang=ru|Ed=II|N=4|Te=Исходной возрастной структуры}}
+
TofT|Lang=ja|Ed=II|N=3|Te=安定的年齢分布}}{{
{{TofT|Lang=zh|Ed=II|N=4|Te=最初年龄分布}}
+
TofT|Lang=pt|Ed=II|N=3|Color=yes|Te=distribuição por idade estável}}{{
<br/>[[70#703|703]]-5 {{TofT|Lang=en|Ed=II|N=5|Te=Growth potential}}
+
TofT|Lang=ru|Ed=II|N=3|Te=Стабильная возрастная структура}}{{
{{TofT|Lang=ar|Ed=II|N=5|Te=كُمُون النمو}}
+
TofT|Lang=zh|Ed=II|N=3|Color=yes|Te=稳定年龄分布}}
{{TofT|Lang=de|Ed=II|N=5|Te=Wachstumspotentials}}
+
{{NewLineT|S=703|N=4}} {{
{{TofT|Lang=es|Ed=II|N=5|Te=Potencial de crecimiento}}
+
TofT|Lang=en|Ed=II|N=4|Color=yes|Te=initial age distribution}}{{
{{TofT|Lang=et|Ed=II|N=5|Te=Iibepotentsiaali}}
+
TofT|Lang=ar|Ed=II|N=4|Te=توزع العمري الإبتدائي}}{{
{{TofT|Lang=fr|Ed=II|N=5|Te=Potentiel d’accroissement}}
+
TofT|Lang=cs|Ed=II|N=4|Color=yes|Te=výchozí věková struktura}}{{
{{TofT|Lang=ja|Ed=II|N=5|Te=潜在成長力}}
+
TofT|Lang=de|Ed=II|N=4|Te=ursprüngliche(r) Altersaufbau}}{{
{{TofT|Lang=ru|Ed=II|N=5|Te=Потенциал роста}}
+
TofT|Lang=es|Ed=II|N=4|Color=yes|Te=composición inicial por edades}}{{
{{TofT|Lang=zh|Ed=II|N=5|Te=增长潜力}}
+
TofT|Lang=fr|Ed=II|N=4|Te=répartition par âges initiale}}{{
<br/>[[70#703|703]]-6 {{TofT|Lang=en|Ed=II|N=6|Te=Stationary population}}
+
TofT|Lang=it|Ed=II|N=4|Color=yes|Te=distribuzione per età iniziale}}{{
{{TofT|Lang=ar|Ed=II|N=6|Te=مجتمع المتوقف}}
+
TofT|Lang=ja|Ed=II|N=4|Te=初期の年齢分布}}{{
{{TofT|Lang=de|Ed=II|N=6|Te=Stationäre Bevölkerung}}
+
TofT|Lang=pt|Ed=II|N=4|Color=yes|Te=distribuição inicial por idade}}{{
{{TofT|Lang=de|Ed=II|N=6|SubN=2|Te=Sterbetafelbevölkerung}}
+
TofT|Lang=ru|Ed=II|N=4|Te=Исходная возрастная структура}}{{
{{TofT|Lang=es|Ed=II|N=6|Te=Población estacionaria}}
+
TofT|Lang=zh|Ed=II|N=4|Color=yes|Te=最初年龄分布}}
{{TofT|Lang=es|Ed=II|N=6|SubN=2|Te=Tabla de mortalidad}}
+
{{NewLineT|S=703|N=5}} {{
{{TofT|Lang=et|Ed=II|N=6|Te=Statsionaarseks rahvastikuks}}
+
TofT|Lang=en|Ed=II|N=5|Color=yes|Te=growth potential}}{{
{{TofT|Lang=et|Ed=II|N=6|SubN=2|Te=Püsirahvastikuks}}
+
TofT|Lang=ar|Ed=II|N=5|Te=كمون النمو}}{{
{{TofT|Lang=fr|Ed=II|N=6|Te=Population stationnaire}}
+
TofT|Lang=cs|Ed=II|N=5|Color=yes|Te=potenciální růst}}{{
{{TofT|Lang=fr|Ed=II|N=6|SubN=2|Te=Population de la table de mortalité}}
+
TofT|Lang=de|Ed=II|N=5|Te=Wachstumspotential}}{{
{{TofT|Lang=ja|Ed=II|N=6|Te=定常(静止)人口}}
+
TofT|Lang=es|Ed=II|N=5|Color=yes|Te=potencial de crecimiento}}{{
{{TofT|Lang=ru|Ed=II|N=6|Te=Стационарным населением}}
+
TofT|Lang=fr|Ed=II|N=5|Te=potentiel d’accroissement}}{{
{{TofT|Lang=zh|Ed=II|N=6|Te=作静止人口}}
+
TofT|Lang=it|Ed=II|N=5|Color=yes|Te=potenziale d’incremento}}{{
<br/>[[70#703|703]]-7 {{TofT|Lang=en|Ed=II|N=7|Te=Quasi-stable population}}
+
TofT|Lang=ja|Ed=II|N=5|Te=潜在成長力}}{{
{{TofT|Lang=ar|Ed=II|N=7|Te=و المجتمع شبه المستقر}}
+
TofT|Lang=pt|Ed=II|N=5|Color=yes|Te=potencial de crescimento}}{{
{{TofT|Lang=de|Ed=II|N=7|Te=Quasi-stabile Bevölkerung}}
+
TofT|Lang=ru|Ed=II|N=5|Te=Потенциал роста}}{{
{{TofT|Lang=es|Ed=II|N=7|Te=Población cuasi estable}}
+
TofT|Lang=zh|Ed=II|N=5|Color=yes|Te=增长潜力}}
{{TofT|Lang=et|Ed=II|N=7|Te=Kvaasistabiilseks rahvastikuks}}
+
{{NewLineT|S=703|N=6}} {{
{{TofT|Lang=fr|Ed=II|N=7|Te=Population quasi stable}}
+
TofT|Lang=en|Ed=II|N=6|Color=yes|Te=stationary population}}{{
{{TofT|Lang=ja|Ed=II|N=7|Te=準安定人口}}
+
TofT|Lang=ar|Ed=II|N=6|Te=مجتمع المتوقف}}{{
{{TofT|Lang=ru|Ed=II|N=7|Te=Квази-стабильным населением}}
+
TofT|Lang=cs|Ed=II|N=6|Color=yes|Te=stacionární populace}}{{
{{TofT|Lang=zh|Ed=II|N=7|Te=准稳定人口}}
+
TofT|Lang=de|Ed=II|N=6|Te=stationäre Bevölkerung}}{{
<br/>[[70#703|703]]-8 {{TofT|Lang=ar|Ed=II|N=8|Te=مجتمع نصف المستقر}}
+
TofT|Lang=es|Ed=II|N=6|Color=yes|Te=población estacionaria}}{{
{{TofT|Lang=es|Ed=II|N=8|Te=Poblaciones semi-estables}}
+
TofT|Lang=es|Ed=II|N=6|SubN=2|Te=tabla de mortalidad}}{{
{{TofT|Lang=fr|Ed=II|N=8|Te=Populations semi-stables}}
+
TofT|Lang=fr|Ed=II|N=6|Te=population stationnaire}}{{
<br/>[[70#703|703]]-9 {{TofT|Lang=en|Ed=II|N=9|Te=Logistic population}}
+
TofT|Lang=fr|Ed=II|N=6|SubN=2|Te=population de la table de mortalité}}{{
{{TofT|Lang=ar|Ed=II|N=9|Te=مجتمع الإمدادي}}
+
TofT|Lang=it|Ed=II|N=6|Color=yes|Te=popolazione stazionaria}}{{
{{TofT|Lang=de|Ed=II|N=9|Te=Logistische Bevölkerung}}
+
TofT|Lang=it|Ed=II|N=6|SubN=2|Te=popolazione della tavola di mortalità}}{{
{{TofT|Lang=es|Ed=II|N=9|Te=Población logística}}
+
TofT|Lang=ja|Ed=II|N=6|Te=定常(静止)人口}}{{
{{TofT|Lang=et|Ed=II|N=9|Te=Logistlik rahvastik}}
+
TofT|Lang=pt|Ed=II|N=6|Color=yes|Te=população estacionária}}{{
{{TofT|Lang=fr|Ed=II|N=9|Te=Population logistique}}
+
TofT|Lang=ru|Ed=II|N=6|Te=Стационарное население}}{{
{{TofT|Lang=ja|Ed=II|N=9|Te=ロジスティック型人口}}
+
TofT|Lang=zh|Ed=II|N=6|Color=yes|Te=作静止人口}}
{{TofT|Lang=ru|Ed=II|N=9|Te=Логистическим ростом населения}}
+
{{NewLineT|S=703|N=7}} {{
{{TofT|Lang=zh|Ed=II|N=9|Te=罗吉斯蒂人口}}
+
TofT|Lang=en|Ed=II|N=7|Color=yes|Te=quasi-stable population}}{{
<br/>[[70#703|703]]-10 {{TofT|Lang=en|Ed=II|N=10|Te=Logistic law}}
+
TofT|Lang=ar|Ed=II|N=7|Te=مجتمع شبه المستقر}}{{
{{TofT|Lang=ar|Ed=II|N=10|Te=قانون الإمدادي}}
+
TofT|Lang=cs|Ed=II|N=7|Color=yes|Te=kvazistabilní populace}}{{
{{TofT|Lang=de|Ed=II|N=10|Te=Gesetz des logistischen Wachstums}}
+
TofT|Lang=de|Ed=II|N=7|Te=quasi-stabile Bevölkerung}}{{
{{TofT|Lang=es|Ed=II|N=10|Te=Función logística}}
+
TofT|Lang=es|Ed=II|N=7|Color=yes|Te=población cuasi estable}}{{
{{TofT|Lang=es|Ed=II|N=10|SubN=2|Te=Ley logística}}
+
TofT|Lang=fr|Ed=II|N=7|Te=population quasi stable}}{{
{{TofT|Lang=et|Ed=II|N=10|Te=Logistliku kasvuseaduse}}
+
TofT|Lang=it|Ed=II|N=7|Color=yes|Te=popolazione quasi stabile}}{{
{{TofT|Lang=fr|Ed=II|N=10|Te=Loi logistique}}
+
TofT|Lang=ja|Ed=II|N=7|Te=準安定人口}}{{
{{TofT|Lang=ja|Ed=II|N=10|Te=ロジスティック法則}}
+
TofT|Lang=pt|Ed=II|N=7|Color=yes|Te=população quase-estável}}{{
{{TofT|Lang=ru|Ed=II|N=10|Te=Логистическим законом}}
+
TofT|Lang=ru|Ed=II|N=7|Te=Квази-стабильное население}}{{
{{TofT|Lang=zh|Ed=II|N=10|Te=罗吉斯蒂增长规律}}
+
TofT|Lang=zh|Ed=II|N=7|Color=yes|Te=准稳定人口}}
<br/>[[70#703|703]]-11 {{TofT|Lang=de|Ed=II|N=11|Te=Pseudo-stabile Bevölkerung}}
+
{{NewLineT|S=703|N=8}} {{
<br/>[[70#703|703]]-12 {{TofT|Lang=de|Ed=II|N=12|Te=Demographische Eigendynamik}}
+
TofT|Lang=en|Ed=II|N=8|Color=yes|Te=}}{{
{{TofT|Lang=de|Ed=II|N=12|SubN=2|Te=Demographische Schwung}}
+
TofT|Lang=ar|Ed=II|N=8|Te=مجتمع نصف المستقر}}{{
{{TofT|Lang=de|Ed=II|N=12|SubN=3|Te=Trägheitsmoment}}
+
TofT|Lang=cs|Ed=II|N=8|Color=yes|Te=}}{{
{{TofT|Lang=de|Ed=II|N=12|SubN=4|Te=Demographische Momentum}}
+
TofT|Lang=de|Ed=II|N=8|Te=pseudo-stabile Bevölkerung}}{{
 +
TofT|Lang=es|Ed=II|N=8|Color=yes|Te=poblaciones semi-estables}}{{
 +
TofT|Lang=fr|Ed=II|N=8|Te=population semi-stable}}{{
 +
TofT|Lang=it|Ed=II|N=8|Color=yes|Te=popolazioni quasi stabili}}{{
 +
TofT|Lang=ja|Ed=II|N=8|Te=}}{{
 +
TofT|Lang=pt|Ed=II|N=8|Color=yes|Te=}}{{
 +
TofT|Lang=ru|Ed=II|N=8|Te=}}{{
 +
TofT|Lang=zh|Ed=II|N=8|Color=yes|Te=}}
 +
{{NewLineT|S=703|N=9}} {{
 +
TofT|Lang=en|Ed=II|N=9|Color=yes|Te=logistic population}}{{
 +
TofT|Lang=ar|Ed=II|N=9|Te=مجتمع الإمدادي}}{{
 +
TofT|Lang=cs|Ed=II|N=9|Color=yes|Te=logistická populace}}{{
 +
TofT|Lang=de|Ed=II|N=9|Te=logistische(s) Bevölkerung}}{{
 +
TofT|Lang=es|Ed=II|N=9|Color=yes|Te=población logística}}{{
 +
TofT|Lang=fr|Ed=II|N=9|Te=population logistique}}{{
 +
TofT|Lang=it|Ed=II|N=9|Color=yes|Te=popolazione logistica}}{{
 +
TofT|Lang=ja|Ed=II|N=9|Te=ロジスティック型人口}}{{
 +
TofT|Lang=pt|Ed=II|N=9|Color=yes|Te=população logística}}{{
 +
TofT|Lang=ru|Ed=II|N=9|Te=Логистический рост населения}}{{
 +
TofT|Lang=zh|Ed=II|N=9|Color=yes|Te=罗吉斯蒂人口}}
 +
{{NewLineT|S=703|N=10}} {{
 +
TofT|Lang=en|Ed=II|N=10|Color=yes|Te=logistic law}}{{
 +
TofT|Lang=ar|Ed=II|N=10|Te=قانون الإمدادي}}{{
 +
TofT|Lang=cs|Ed=II|N=10|Color=yes|Te=logistická funkce}}{{
 +
TofT|Lang=de|Ed=II|N=10|Te=Gesetz des logistischen Wachstums}}{{
 +
TofT|Lang=es|Ed=II|N=10|Color=yes|Te=función logística}}{{
 +
TofT|Lang=es|Ed=II|N=10|SubN=2|Te=ley logística}}{{
 +
TofT|Lang=fr|Ed=II|N=10|Te=loi logistique}}{{
 +
TofT|Lang=it|Ed=II|N=10|Color=yes|Te=legge logistica}}{{
 +
TofT|Lang=ja|Ed=II|N=10|Te=ロジスティック法則}}{{
 +
TofT|Lang=pt|Ed=II|N=10|Color=yes|Te=função logística}}{{
 +
TofT|Lang=ru|Ed=II|N=10|Te=Логистический закон}}{{
 +
TofT|Lang=zh|Ed=II|N=10|Color=yes|Te=罗吉斯蒂法则}}|
 +
Lang=en|Lang2=ar|Lang3=cs|Lang4=de|Lang5=es|Lang6=fr|Lang7=it|Lang8=ja|Lang9=pt|Lang10=ru|Lang11=zh}}
 +
 
 +
{{Gallery
 +
| caption={{Lang_audio_pronunciation_-en}}
 +
| width=100
 +
| height=20
 +
| lines=3
 +
|703_1_1_en_II Intrinsic rate of natural increase.ogg|'''intrinsic rate of natural increase'''
 +
|703_2_1_en_II Stable population.ogg|'''stable population'''
 +
|703_3_1_en_II Stable age distribution.ogg|'''stable age distribution'''
 +
|703_4_1_en_II Initial age distribution.ogg|'''initial age distribution'''
 +
|703_5_1_en_II Growth potential.ogg|'''growth potential'''
 +
|703_6_1_en_II Stationary population.ogg|'''stationary population'''
 +
|703_7_1_en_II Quasi-stable population.ogg|'''quasi-stable population'''
 +
|703_9_1_en_II Logistic population.ogg|'''logistic population'''
 +
|703_10_1_en_II Logistic law.ogg|'''logistic law'''
 
}}
 
}}
  
 
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[[en-II:Intrinsic rate of natural increase]] [[ar-II:معدل الصميم للزيادة الطبيعية]] [[de-II:Intrinsische Wachstumsrate]] [[es-II:Tasa intrínseca de crecimiento natural]] [[et-II:Stabiilseks iibekordajaks]] [[fr-II:Accroissement naturel]] [[ja-II:安定人口増加率(または真性自然増加率)]] [[ru-II:Истинным коэффициентом естественного прироста]] [[zh-II:内在自然增长率]]  
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[[en-II:intrinsic rate of natural increase]] [[ar-II:معدل الصميم للزيادة الطبيعية]] [[cs-II:vnitřní míra přirozeného přírůstku]] [[de-II:stabile Wachstumsrate]] [[es-II:tasa intrínseca de crecimiento natural]] [[fr-II:taux intrinsèque d’accroissement naturel]] [[it-II:tasso intrinseco di incremento naturale]] [[ja-II:安定人口増加率(または真性自然増加率)]] [[pt-II:taxa intrínseca de crescimento natural]] [[ru-II:Истинный коэффициент естественного прироста]] [[zh-II:内在自然增长率]]  
 
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Latest revision as of 07:11, 5 February 2010

Intrinsic rate of natural increase  (INTRINSIC rate of natural increase)


It can be shown that when a closed population (701-4) is subjected to constant age-specific fertility and mortality rates (631-8; 412-1) for a sufficiently long period of time, its annual rate of increase will tend to become constant. This constant rate of increase is called the intrinsic rate of natural increase 1, and a population which has reached this stage is called a stable population 2. The proportion of persons in different age groups in such a population will be constant, i.e., the population will have a stable age distribution 3. This stable age distribution is independent of the initial age distribution 4 and depends only on the fertility and mortality rates that are kept constant. Human populations never reach exact stability in practice, as fertility and mortality rates constantly change, but the computation of a stable population as a model and of its intrinsic rates may provide an index of the growth potential 5 of a set of age-specific fertility rates applied to a non stabilized age structure. Related to the growth potential, the moment of inertia of a population or demographic momentum 11★ should be mentioned: it refers to the dynamics hidden in the age structure due to a delayed growth response caused by the biological fact that from the time of birth of a cohort (116-2) to the beginning of their period of fertility (620-1) a certain amount of time passes. A population may for this reason still grow, even though the birth rate drops long ago. The reverse case is also possible. The momentum is particularly altered in case of discontinuity in the evolution of births and abrupt reversals of trends. A stable population in which the intrinsic rate of natural increase is zero is called a stationary population 6. In such a population the numbers in a given age group are equal to the integral of the survivorship function (431-3) of the life table taken between the upper and lower age limits of the group, multiplied by a factor of proportionality common to all age groups. A quasi-stable population 7 is a formerly stable population with constant fertility and gradually changing mortality; characteristics of this type of population are similar to those of a semi-stable population 8★ which is a closed population with a constant age structure. A logistic population 9 is a population growing in accordance with the logistic law 10 of growth, i.e., a population in which the growth rate decreases as a linear function of the population already alive and which will tend asymptotically to an upper limit.

  • 1. The intrinsic rate, also called by its inventor Lotka, the true rate of natural increase, is equal to the difference between the intrinsic birth rate (or stable birth rate) and the intrinsic death rate (or stable death rate).
  • 2. Stable, adj. - stability, n. - stabilize, v.
    Stable population analysis uses the properties of stable population models to estimate various characteristics of real populations.
  • 6. Stationary, adj. - stationarity, n.

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