| China as a developing country, is also the world's fastest urbanization process in one of the countries, many of the city is moving from extensive to intensive urban transition in this process we need to find a path in line with China's national conditions of urban development Road, seeking a path with Chinese characteristics, social and economic development and population, natural resources, and the environment and sustainable development. Urban residential land is an important component of urban land, and commitment to maintain and undertake the functioning of urban function of basic urban event. Urban residential development and construction is no longer centered on the needs of contemporary people, must also be left for future generations of space development. How through a series of planning and management tools, urban residential space on the optimized layout reasonable, and promote the city healthy ecological system in improving the life quality of residents, while achieving sustainable urban development and healthy development has become a very important issue.The study is based on the background of the current urbanization process and urban ecological construction, expectations of the professional from the ecological point of view, an integrated geographic information system, land evaluation, planning and so many areas of design theory and technology, combined with latest research results at home and abroad, for the characteristics of urban residential land, urban land spatial layout optimization of the related theoretical research and practical exploration. The results show that:Urban residential area of suitable land for construction is 132.61 km2,18.88% of total land. Mainly in urban areas, transportation routes near the area of ecological sensitivity to small, ecosystem stability and towns less impact on their environment; same services within the region to facilitate a high degree of urban residential areas with significant development advantages.More appropriate for the regional area of 57.57km2,8.20% of total land can be divided into built-up areas restricted mainly to a gentler slope; vegetation canopy density is relatively high or relatively dense river network area. This part of the district's urban construction on the ecological environment has some influence, but the transportation is convenient and close to town regional characteristics, so that position in the area that has some of the advantages of the town is absolutely not suitable for construction of residential areas development. It should be noted that when the land development method for building restrictions to protect vegetation and reduce logging damage, in terms of protecting the ecological environment, the appropriate level of development and construction.Appropriate area of 104.77km2,14.92% of total land, this part of the region away from the main built-up areas, transport facilities, location advantages are relatively weak, so for the construction of urban residential areas suitable for less, should the first developed the development of peripheral services and building traffic network, improve reliability and convenience of residents travel portable service, and enhance regional advantages, make the area suitable for construction of urban residential areas much more.Not build the site consists of two parts, one is of high ecological sensitivity areas as ecological reserves, an area of 186.26km2,26.52% of total land; main high forest canopy, river-intensive area, with very high ecological sensitivity, poor stability of ecological systems, are particularly vulnerable to the impact of urban development activities, and the ecological balance of the region, once damaged, is difficult to restore a short time, it is not as urban residential land, should also prohibit non-sustainable exploitation of vegetation should be protected, and strictly control water quality, land use and management should be strictly limited to protect the natural environment within the region and enhance the diversity and stability of ecosystems. The other is A class of basic farmland, an area of 221.22km2, of the total land of 31.49%. To meet the demographic and socio-economic development in a period of time the demand for agricultural products, must be Class A strict control of basic farmland, development and construction in the city to avoid the "pie" type of space spread. |
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