Chapter 7 Land SupplyReasons for land constraint Reasons demand for land o Population growth Due to the rapid population growth in the last few years, more land is needed for human activities. o Increasing demand for housing A growing population will lead to an increase in demand for housing. o Growth of industries The need to provide jobs for a growing population is an important concern. o Development of transport system As a country develops, more roads and railways have to be built. A good transport network is important for the movement of goods and raw materials, as well as to enable workers to travel between their homes and workplace E.g. In some cities, over 20% of the total land area is set aside for the transport facilities such as roads, railways, and car parks o Increasing demand for arable land To produce food to feed their increasing populations, countries have to look for more arable land. o Increasing demand for recreational spaces With more people, more recreational spaces will have to be provided. E.g. swimming pool, public golf courses, theatres, parks and nature reserves P-T.H.R.I.F. Limited supply of land o Though land makes up 30% of the Earth’s surfaces, not all are usable. o Swamps, marshes and low-lying coastal areas are not usable. o Other uses of land are needed E.g. water catchment areas, military purposesResponses to rising demand for land Increasing the price of land o Due to more users willing to pay a higher price for the available land, hence pushing up the price of the land. o Discourages some people from using the land, reducing demand.
Increasing the supply of land o Land Clearance Increase the amount of land available for development Demolishing old buildings or through deforestation May have a negative impact on the environment o E.g. Deforestation cause many plants and animals to die or become extinct →affecting food chain o Land reclamation Landfill Creating dry land from swampy areas, marshes and shallow parts of the sea. These areas are drained and filled with material like sand to from dry land. o E.g. Singapore Boat Quay and Marina Bay Area Empoldering A method of reclaiming land from sea Though Empoldering is usually carried out in low-lying coastal areas, it can also be applied to areas that are further inland. Reclaiming derelict land Usually caused by natural disasters, forest fires or human activities o Improper farming activities Fertility of arable land may be lost due to improper farming practice. o Mining Activities Mineral ores, vegetation and soil have to be removed Heaps of mining wastes are left behind deep holes cause by mining, causing poisonous substance to contaminate the soil. Maximizing use of existing land o Maximizing urban land use o Mixed land use High Density Building Maximizing Agricultural land use Terracing Soil-less farmingConserving Land o As a country develops, demand for land increases for industries and housing and other facilities. o A country’s forests and other nature features should be protected