Question

i want pdf on overtime there has been change in size and shape of boundaries of villages

Answer 1

The size, structure and form of settlements over time can have a variety of socio-economic and environmental implications. The expansion of cities, for instance, requires infrastructure spending for new roads, sewers and water supply lines. Potential environmental impacts include loss of wildlife habitat and/or high quality agricultural land, increased air pollution and greenhouse gas emissions, and the contamination of rivers, lakes and aquifers. The type or form of expansion is also significant. Low density expansion consumes more agricultural and forested land and results in more infrastructure costs per capita than high density expansion.

The nature and growth of settlements are of particular importance for policy research related to cities, particularly metropolitan areas. The new methodology introduced in this paper, addresses data gaps and limitations with respect to current measures of Canada's built-up or settled areas. This methodology also aims to produce spatial data sets that are coherent through time and space.

The new approach presented in this research paper addresses current data gaps and allows the coherent mapping of settlements across the country. 1  The new methodology takes advantage of more refined census boundaries and satellite-based data sets to help address the challenges noted above.

There is strong policy and research interest for this research project. For example, Infrastructure Canada will use the results for research and analysis activities related to of Canada's infrastructure needs and programs. The methodology also fills an important data gap in Statistics Canada's Land Accounts. It allows the creation of a new land use/land cover change matrix, which is used to track changes in land use and land cover over time.

The Land Accounts

The Land Accounts are a major component of the Canadian System of Environmental and Resource Accounts (CSERA). Based on the compilation of various environmental data sets, the Land Accounts offer an integrated view of land and its use by Canadians. These accounts have a national coverage and are compatible with the economic accounts, supporting the coherent analysis of land issues in Canada.

For more information:

Statistics Canada, 1997, Concepts, Sources and Methods of the Canadian System of Environmental and Resource Accounts, Catalogue no. 16-505-G, Ottawa.

2.1  Key project goals

The primary goal is to develop a new methodology and produce corresponding data sets that more specifically delineate or map the physical form of settlements across the country and through time. The resulting spatial data sets will reflect more accurately where people live and work. They will also ensure that the amount of unsettled land 2  within the new settlements boundaries kept to minimum and is easily measurable; the existence of these areas can impact calculations related to settlement growth and form.

The methodology described in this study is based on Geographic Information System (GIS) technology. 3  The application of the methodology results in a data set that contains digital boundaries depicting the limits of settlements.

Challenges in the creation of a national dataset

There are several challenges inherent in the creation of a national data set on settlements including the diverse nature of settlements in terms of size, geography, land use and form.

Some settlements consist of a small collection of houses, whereas others are very large cities with millions of inhabitants. The intensity of land use often increases with the size of settlements. For instance, large skyscraper buildings are typically found in the largest cities and not in small cities. The largest cities also tend to have denser road networks and higher population densities than remote or isolated towns. Even within a very large city, there are areas of high intensity, with skyscraper office buildings and apartment complexes, and areas of lower intensity such as strip malls or houses on large lots. There is variability in all settlements, but this variability typically increases with the size of settlement.

Answer 2

Village is a local area where people live in group. Its  boundary changes in size and shape with time. The change in size is mainly influenced by the increase in population in the village. The change in shape is influenced by factors such as topography, wind, drainage and soil fertility in case the villagers are farmers. People tend to avoid or live within these factors leading to change in boundary.