4.1 Urban and Rural Resident Land Cover Change in Countries
Based on the statistics of national population, GDP, population density, per capita Urban and Rural Land and GDP per square kilometer in selected countries, the differences among the less developed countries, developing countries and developed countries are very obviously (Table 3 and Figure 3).  The population density per square kilometer in developed countries was generally less than 5000 persons/km², while the figure can be larger than 10,000 persons/km² in developed countries, where per capita Urban and Rural Land area was five times more than that in less developed countries. The GDP in developed ountries were generally higher than US$60mn/km², while it was lower than US$35mn/km² in less developed countries.

4.2 Urban and Rural Resident Land Area Change in Major Economic Communities
The economic communities have their special characters in Urban and Rural Resident Land Changes. The total area of Urban and Rural Land in the Group of Eight (G8)1 represents more than 40% of the global total, followed by BRICs (Brazil, Russia, India, China and South Africa) which accounts for more than 30% in this respect. By looking at change rate (Table 4), the Africa Union and Southern Asia region experienced fast increase in population but noticeable decrease in per capita construction land area. In terms of change of GDP/km², the BRICs and Southern Asia witness a rapid rise in land utilization efficiency, by more than 200% over the period of nearly ten years while G8, EU and Southern Asia have a slow increase.
By analyzing the correlation between Urban and Rural Land areas and economic development, the population density in G8 and EU is far below the global average; Community of Latin American and Caribbean States (CELAC) and Union of South American States (UNASUR) are close to global average. The economic communities else are above the global average, among which African Union, ASEAN and Southern Asia are far above global average. In terms of per capita Urban and Rural Resident Land area, G8 has more than 500m²/person, well above the global average, the economic communities else are lower than global average, among which African Union, ASEAN and Southern Asia have less than 100m²/person. Looking at the GDP/km², only Northeastern Asia is over four times more than global average; G8 and EU are well above the global average and CELAC and UNASUR are slightly higher; the economic communities else are considerably lower than the global average, with African Union being approximately one third of the global average.

4.3 Urban and Rural Land Utilization among Urbanization hot Areas
From the total areas of Urban and Rural Land, the city agglomeration around the Yangtze River Delta comes second to the Great Lakes city agglomeration of the USA, reached 30,000km², followed by city agglomeration in the northeast of the USA which is more than 26,000km², and Japanese Tokaido city agglomeration which is 8115.96km². Other urbanized regions are of relatively small scale with the Urban and Rural Land is 2000km² approximately.
Looking at the per capita land area (Table 5) in the major city agglomerations, Japan’s Tokaido city agglomeration reached 8305 persons/km², which presented the typical characteristic of high density urbanization in Asia and China’s Yangtze River Delta city agglomeration reached 6995 persons/km², both of which were far above that in Europe and America.