Demographic Changes Demographic Transition Model Transitions In World Population.

Slides:



Advertisements
Similar presentations
 The Demographic Transition  1. Low growth– 3. Moderate growth  2. High growth– 4. Low growth  Population pyramids  Age distribution  Sex ratio 
Advertisements

Section #1: Studying Human Populations
Demographic Transition Model
Demography – the study of the statistical characteristics of a population’s births, deaths, age/sex structure, spatial distribution, etc. Demographics.
WORLD GEOGRAPHY Sept. 12, Today - Population (part 1)
Population Sizes Throughout History: The main cause of our rapid population increase is the decrease in the death rate. With new medicines and technologies,
Demographic Transition A Model of Population and Natural Increase Rate.
Demographic Transition Model Population Changes  The total population of an area depends upon changes in the natural increase and migration.  The natural.
The Demographic Transition Model Demographic Transition Models display a country’s process of change in a society’s population. The demographic transition.
Demographic Transition Model (DTM)
The study of the human population
Why is Population Increasing at Different Rates in Different Countries? Key Issue #3.
Current Human Population Growth and Implications
DEMOGRAPHY HUMAN GEOGRAPHY.
Key Issue 3: Variations in Population Growth
The Demographic Transition
Review What is the current world population?
Demographic Transition Model
TWO TYPES OF POPULATION GROWTH IN ECOSYSTEMS: EXPONENTIAL GROWTH LOGISTICAL GROWTH Which represents the human population??
AP Human Geography.  Where are the major population clusters?  Why do people live and not live in certain areas?  What are the different types of population.
Human Population : Growth, Demography and Carrying Capacity.
Chapter 2 Key Issue 3 Why Is Population Increasing at Different Rates in Different Countries?
 A geographical model used to explain… ∆ high birth/high death rates ⋎ low birth/low death rates as countries develop from Pre-industrial (LLDC) ⋎ Industrial.
The Demographic Transition Model *hereafter referred to as the DTM
Demographic Transition Model. *The DTM describes a sequence of changes in the relationships between birth and death rates. *The model was produced using.
3.1.4 Demographic Transition. Demographic Transition Growth rate (percent)
Birth Rate and Death rate are both high. Population growth is slow and fluctuating. Reasons Birth Rate is high as a result of: Lack of family planning.
PREAICE GEOGRAPHY POPULATION AND SETTLEMENT. POPULATION DYNAMICS 1 MILLION YEARS AGO: 125,000 PEOPLE. 10,000 YEARS AGO WHEN PEOPLE DOMESTICATED ANIMALS,
Demographic Transition Demographers call the sequence of stages in population growth the demographic transition model. The FOUR stages are: 1.Low-Growth.
Demographic Transition How Population Geography Dictates a Country’s Economy
Demographic Transition Model 11/5 Bellringer: What information is this graph displaying? Give one fact that you can determine from this graph?
Population Models Describe the nature and discuss the implications of exponential human population growth Calculate and explain from given.
A MEASURE OF GROWTH AT DIFFERENT STAGES Demographic Transition Model (DTM)
Chapter Five Processes and Cycles of Population Change.
Demographic Transition Model: A four stage model that shows a similar process of population change in all societies over time…Has a predictive capability.
What is the Demographic Transition Model (DTM)? The demographic transition model explains the transformation of countries from having high birth and death.
Cole Cantrell and Grant McNulty 4 th Block.  This model can be used to show how developed a country is  It contains 4 stages, with a possible 5 th stage.
Demographic Transition Review FRIDAY, OCTOBER 16 TH, 2015.
Human Populations Chapter 8, p
POPULATION & MIGRATION AP HuG Unit 2 (Chapters 2 & 3)
True or False: During Stage 2 of a population’s demographic transition, the death rate declines.
Review What is the current world population? What is the current world population? Why is Physiological density a better way of calculating population.
World Population: Study in Demographics:. Some basic facts   Current World Population is 6.6 billion   2050 projection is 8.2 billion to 11 billion.
CHAPTER 2 SECTION 2 Where has the world’s population increased?
CHAPTER 2: POPULATION KEY ISSUE #3 WHY IS POPULATION INCREASING AT DIFFERENT RATES IN DIFFERENT COUNTRIES?
Chapter 7 The Human Population. Put the following 10 countries in order from most to least populated: Nigeria Japan United States Brazil Bangladesh Pakistan.
Human Population Growth 10/27/08 Homework: pg 241 #6-8, 10 Quiz on Friday (populations)
Chapter 2 Population. Key Issue 1 Where Is the World’s Population Distributed?
 Demographic Transition Model.  The demographic transition model shows population change over time.  It studies how birth rate and death rate affect.
Chapter 7 The Human Population.
Demographic Transition.
Ch. 2 The Demographic Transition and Population Pyramids
What is the Demographic Transition Model (DTM)?
Chapter 2 Key Issue 2 The Demographic Transition Model
What can we tell about Population?
Population Part IV Thomas Malthus, Population Bomb? (A)
Demographic Transition Model
Current Human Population Growth and Implications
Topic: The Demographic Transition Model
Demographic Transition
Why Does Population Growth Vary among Regions?
Demographic Transition Review
FEBRUARY 6, 2018 Turn in DBQs (only essay with rubric on top) Get out stuff for notes Demographic Transition Model HW: Binder Check on Friday Test Corrections.
The Demographic Transition
OBJECTIVE Students will analyze demographic transition models, population pyramids, and epidemiological stages in order to predict a nation’s development.
What can we tell about Population?
Demographic Transition Model
Where Has the World’s Population Increased?
THE DEMOGRAPHIC TRANSITION
Key ? 2: Why Do Populations Rise or Fall in Particular Places?
Presentation transcript:

Demographic Changes Demographic Transition Model Transitions In World Population

Calculating Population Change Population changes as result of four variables: –Births + immigration = increase –Deaths + emigration = decrease (CBR+I)-(CDR+E)= Total population This equation better suited to study population trends rather than specifics In what ways might geographers use this data?

Demographic Transition Model Used to determine stages of a country’s growth Graphs population, time, birth and death rates (doesn’t account for migration) Used to correlate a country’s progress in technology and society PopPop Stages/Time

Stage 1: Low Growth (High Stationary) Overall Population is sparse High birth-high death= stationary pop Lack of major food surplus keeps population low Super long doubling time ALL WORLD REGIONS UNTIL 17 th C Agricultural Revolution: domesticated plants/animals make for better food sources and lead to transition

Population graph for the first four million years

Stage 2: High Growth (Early Expanding) CDR decreases rapidly (especially people under the age of 5) CBR remains steady Results in natural increase Industrial Revolution –Technology produces and transfers goods –Industry and farming improve Sanitation improvements- examples? Medical advancements- examples? Bangladesh, Nigeria, Pakistan

Stage 3: Moderate Growth (Late Expanding) CBR drops CDR drops but slower than stage 2 decrease NIR is modest CBR drops because of new technologies –People have fewer kids –Medical advances mean less chance of children dying –Economic factors: less farming more urban How does this correlate? –Women become better educated How does this correlate? –China, Brazil, Mexico, India

Entering Stage Three Even though birth rate is falling, population momentum keeps the total population growing.

Stage 4: Low to No Growth (Low Stationary) CBR=CDR (little to no growth) Most European nations in Stage 4 –U.S. moving in this direction Social Customs –Women working –Employed parents need to plan for day care –Entertainment and leisure activities –EXPLAIN! US, Sweden, Japan, Britain

Stage 1Stage 2Stage 3Stage 4 Low growthincr grwthdecr grwthlow/no Birth Rate Death Rate Total Popul ation

Problems with the Model? No "guidelines" for how long it takes a to get from Stage I to IV. Just describes it –Western Euro countries took centuries –Economic Tigers took decades.Economic Tigers Nations that were populated by emigration did not go through early stage Birth rates have fallen below death rates in some areas, should there be a stage V?

PROPOSED FIFTH STAGE: Negative population growth CBR drops to zero-CDR very low-population is slowly dying out (Children of Men) Not enough people in the work force to support programs for the aged (dependency ratio very lopsided) Social programs overloaded-unrest & probable chaos Innovations stagnant Prezi