关键词:
investment
town planning
land use
urban growth.
摘要:
The rapid growth of the city of Sana'a, both vertically and horizontally, and the increase of its population over the past two decades, led to a continued gradual rise in the prices of its lands, starting from the city centers and the proximity of the streets to their rankings. Then according to its importance and the areas surrounding the city, this in turn also led to reinvestment or intensive investment of land located in the city centers and next to the main commercial streets. Since most of the buildings in these areas were built before the prices of those lands increased, the prices of the land becomes more than the price of the building on which it is located, and the need for partial or individual investment and optimal exploitation of the land leads to the removal of those buildings (or selling them to investors that can invest better). Then reconstructing them with new buildings, even if they are in good condition, which may be called land reinvestment or extensive land investment. The extensive use of the land brings forth the transfer of its functions to various investment options, like commercial offices, financial services, etc. These changes occurred according to the market and investment mechanism and the increase in the natural growth of cities, while all these changes are often far from the city's major plan, land-use changes without any approved planning reference and is usually not accompanied by any legislation, rules, regulations or planning systems that regulate the new direction and this has led to the increase of burden on the ability of the available services to perform its function, which was originally at a low level. Moreover, this has created many environmental and administrative problems, the impact of which is evident through overcrowding, the disappearance of some green areas and the great lack of provision of all major services in accordance with the assumed standards.