Ib dp geography factors affecting population distribution. Population distribution is uneven since some areas are densely settled while others are not. On one hand the population of india is highly concentrated in some pockets such as highly urbanized and industrialised areas and areas of high agricultural productivity, while on. Areas with few resources tend to be sparsely populated e. These abiotic factors not only affect the behavior of insects but also disturb the physiological mechanism 44. Physical factors that affect population distribution include altitude and latitude.
Brief notes on population growth, worlds population. Factors affecting population density, group size and territory size of the european badger, meles meles article in journal of zoology 1961. Each population has a unique physical distribution in time and space. For example, plants or animals occupying islands have a geographic range defined by. Density dependent factors affect a population through increasing or decreasing birth and death rates, in a way that is directly related to the density of the population. The land surface of the earth accounts for around 30% of its area.
Jun 19, 2015 population distribution refers to the way people are spread out on the land. What are some factors that affect population density. The two factors that increase the size of a population are natality, which is the number of individuals that are added to the population over a period of time due to reproduction, and immigration. What are the factors responsible for population growth. The opposing factor to fertility rate is mortality rate, which is equal to the typical amount of deaths per the same amount of the population in the year.
Factors influencing the distribution and density of. Some areas have a high population density while others have a low population density. The factors affecting distribution of population are described below one by one in a nutshell manner. Ent 425 general entomology resource library tutorials.
Factors affecting population distributiondensity free. Key natural impacting factors of chinas human population. Chapter 2 spatial distribution and density of population. Pdf factors affecting the population density of peach. Lowland plains, flat river valleys and deltas and volcanic areas with fertile soil tend to have high population densities. Factors affecting population density, group size and territory size of the european badger, meles meles. Ib dp geography factors affecting population distribution global scale. There are a range of human and natural factors that affect population density. Physical factors that affect population density include water supply, climate, relief shape of the land, vegetation, soils and availability of natural resources and. Photo geographic factor title explanation of relevance physical factors rather than human factors are more important in determining population density of a place. Let us see what factors are responsible for these variations. Jan 25, 2019 a key factor affecting the growth of the population is the death, or mortality, rate. The world population today is over 7 billion and the number is increasing with each passing year. The factors that affect the mortality rate include the availability and affordability of quality health care and lifestyle habits for example, whether they smoke or do.
Environmental effects on insects and their population dynamics. The distribution of population in continents is most uneven. Factors that affects population distribution your article library. The 2015 revision of world population prospects is the twentyfourth round of the united nations.
Density independent factors may affect the availability of resources that are required by the population density dependent factors, indirectly affecting the carrying capacity of the environment. In rural areas, most people make direct use of the surrounding land to support themselves through agriculture, hunting and mining. What factors affect population density and distribution. The influence of factors affecting the critical population density of inocula on the determination of bacterial susceptibility to antibiotics by disc diffusion methods alan j. Factors influencing the distribution and density of population in india are as follows. Factors that cause population growth include increased food production, improved health care services, immigration and high birth rate. It may contain individuals of different ages and its size density is likely to change over time, growing or shrinking according to the reproductive success of its. Physical conditions, such as climate temperature and rainfall, landforms in terms of altitudes, the quality of the soil and the availability of energy and mine resources are the important geographical determinants of population distribution. A hurricane might destroy trees that are the required nesting site for a population of birds. The main factors that affect distribution of population are natural resources, climatic conditions, soils, cultural factors, age of human settlement, industrial development and means of transport and. Factors affecting distribution of population in india. There are many factors contributing to the unbalanced population distribution, including natural condition, social and economic development, and transportation infrastructure.
Identify the image from the first column, give it a suitable factor title and then explain how it influences population distribution. Every breeding territory was classified by a number of qualitative factors describing the. Areas of high population density tend to be located between 20 and 60n. Pdf factors affecting the population density of peach fruit. This paper discusses the relationship between the distribution and biomass of the main prey of european badgers, meles meles and the badgers group size, territory size and population density. What are the factors which affect the distribution of.
For example, plants or animals occupying islands have a geographic range defined by the perimeter of the island. Areas with temperate climates tend to be densely populated as there is enough rain and heat to grow crops e. What are the factors affecting population distribution. Population distribution refers to the way people are spread out on the land. Distribution of stellers sea eagles haliaetus pelagicus was studied along the coastline of the northern part of the sea of okhotsk in surveys of 19911998. Factors affecting populations s2105 investigate and discuss various limiting factors that influence population.
One of the most important aspects of indias population is its uneven distribution. Density dependent and density independent mortality factors a. Population densities are different in various parts of the world. 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. Pdf habitat preferences and factors affecting population. These factors have led to overpopulation, which has more negative effects than positive impacts. Learn more about factors influencing population distribution for the ias exam. Just as the birth of new people increases the population size, deaths decrease it. Hedges department of pathology and microbiology, school of medical sciences, university walk, bristol bs8 1td, uk.
Or sometime population distribution can be described as being even or uneven, scattered or concentrated in a particular places. Thus, apart from physical factors, numerous social, demographic, economic. Physical and human factors affecting population distribution. Environmental and human factors affect the spread of people across the world. The geographic boundaries of a population are easy to establish for some species but more difficult for others. A key factor affecting the growth of the population is the death, or mortality, rate. Physical factors that affect population distribution include altitude and latitude, relief, climate, soils, vegetation, water and location of mineral and energy resources. The main factors that affect distribution of population are natural resources, climatic conditions, soils, cultural factors, age of human settlement, industrial development and means of transport and communication. This area contains a large land area and a relatively temperate climate. Density independent factors include events or conditions, often weather or climaterelated, that affect all individuals equally, regardless of the overall population density. Module 9 notes human resource development in india 240 population density, distribuion and growth in india geography identify factors responsible for rapid growth of population. What are the factors which affect the distribution of population. A hard freeze, for example, will kill the same high percentage of the potato leafhoppers in a farmers peanut field no matter if the population contains a few hundred.
Consistent with the social network explanation of why population density matters for per capita campaign contributions, the lefthand graph shows that party leaders in population dense areas are more likely to report that having a friend or colleagues who donates is one of the most important factors in recruiting new donors b 0. The social and economic factors affecting population distribution are. Factors affecting population distributiondensity dubai is a thriving settlement in the midst of the desert. Factors affecting population growth 67 factors affecting population growth notes i. Against the background of the demographic argument, presented in the preceding section, we must inquire into the social factors, broadly defined, that are involved in population growth and its control.
The factor of population density plays a crucial role in the mechanism of urban rural split. The distribution of areas rich in earthworms, lumbricus spp. A population is a group of individuals all members of a single species who live together in the same habitat and are likely to interbreed. Unlike density independent factors, which are not tied to the population density, density dependent factors change how they affect the population as the population changes in size. Factors affecting population density, group size and. Population distribution across the earth is uneven. Population distribution is a term used to describe how humans are spread across the earth. Areas with extreme climates of hot and cold tend to. Read about the geographical, social, cultural factors affecting population distribution. All such factors affecting the population distribution and density.
Fiske 1911 were the first to base a concept of population regulation on functional relationships. View the article pdf and any associated supplements and. Temperature since density is mass per unit volume it will change if the volume changes mass cant change until you add some more of the same material to it, w. Population distribution in 1969 the worlds population amounted to be about 3,616 millions, inhabiting more than 6 million square kilo meters of land. Download factors affecting population distribution notes pdf for upsc 2020. However, the geographical distribution of population is greatly unbalanced. View the article pdf and any associated supplements and figures for a period of 48 hours. Apart from physical factors several social, demographic, economic, political and historical factors affect population distribution. A population is a subset of individuals of one species that occupies a particular geographic area and, in sexually reproducing species, interbreeds. Physical and human factors affecting global population distribution. Factors reposible for uneven distribution of population in the world 1. There are several factors affecting the density of a object. It is important to note that most of the physical factors influence population distribution only indirectly through climatic conditions. Some areas are densely populated whereas others are sparsely populated.
620 6 1234 272 768 1119 173 1042 264 1533 1285 954 200 1526 967 1148 418 1121 1307 628 402 1525 62 917 454 125 131 890 993 344 1514 1005 839 824 398 280 529 282 164 286 669 496 517 1020 510