Comprehensive Land Use Planning Base On The Idea Of Negative Planning

In recent years, with the acceleration in the course of the urbanization and industrialization in our country, the building land has been expanding rapidly, which brings about the increasingly sharp conflicts between man and land in many aspects, such as building land and farming land, economic development and natural ecosystem conservation and so on. Therefore, we should work out a scientific and effective program of land utilization to help maintain the virtuous circle in land ecosystem, make rational use of land resource and reap its fullest benefits to achieve sustainable land-intensive utilization. It will be an effective method to solve these conflicts.Considering the problems in the present Comprehensive land use planning, I will start from protecting natural ecosystem and preserving the ecological layout in regional landscape and then take a probe into how to apply Negative Planning concept to carry out the rational plan in regional land and strive to change the traditional means in overall planning, which follows the man-oriented idea, Meanwhile, the aims of the thesis is to demonstrate the feasibility of the introduction of the Negative Planning into comprehensive land use planning and explore the procedures and methods of Negative Planning. The main conclusions of the research are as follows.1. There are great value and positive significance to introduct Negative Planning into comprehensive land use planning. The Negative Planning theory is the inheritance from the traditional theory and also an important supplement to it. And they are coherent in theory basis. Meanwhile, the object of Negative Planning is an important supplement to that of the comprehensive land use planning; the application of the Negative Planning will contribute to the realization in the object of comprehensive land use planning. Negative Planning lays special emphasis on land layout in space and the protection and land-use control in areas incapable of construction. The coordination of the two methods will make land-use planning more scientific and reasonable. Negative Planning concept accords with the situation in the development of land-use planning. Combined with traditional methods, it can meet the needs for land use in economic development, increase ecological benefits, ensure the sustainable development and promote equity of land-use as well.2. As for working procedures, the objects of regional environment planning should be set in the first place and the priority should be put on planning non-constructional land. The specific ideas are as follows: according to the assessment of land adaptability, we should first delimit ecological land-use, such as land with fragile ecosystem, soil erosion,slopes more than 25 degrees, etc., then fertile and crop-friendly farming land; secondly it is land for regional forest, water area, sightseeing and tourism, historical and cultural relics, nature preservation and mineral resources; last, we could use the rest for building land according to its environmental capacity. In addition to adjusting land-use structure and planning land-use target, the content of NP includes delimiting land-use ecological function areas, establishing pattems of environment-friendly sites and proposing the system and measures to ensure the implementation of land-use planning.3. The text does the research of the application of Negative Planning in Leshan's comprehensive land-use planning.Target analys of Negative Planning are conducted on the starting. Assessments of land-use fitting are made on the base of analyses of the current land-use conditions and landscape layout. It shows that 660872.3 hectares of the land area with a slope of 25 degrees is supposed to be used in ecology instead of construction. Firs-rate and second-rate land of 205330.03 ha. suitable for farming and crop growing should be conserved for non-constructional purpose. So do the moderate-sensibility areas of erosion up to 478677 ha., as the assessments of eco-system sensibility show. In Le Shan, natural reserves (including various scenery spots, national natural reserves, national geological parks and national forest parks), historic and cultural protection land, water system, marshes and urban greenbelts with a total of 86933.27 ha. should be kept for landscape ecology. Landscape's ecological security land, that is, non-constructional areas, is figured out up to 1154500 ha. and thus the basic ecological controlling line of Le Shah's land utilization is made out, from which the capacity of constructional land of 9.9% is counted out.Compared Negative-Planning method with traditional forecast layout, the text make the main target is as follows: non-constructive area 1,154,500 hectare; controlling increase of constructive area within 20622.89 hectare from 2006 to 2020; in the year of 2020, plantation area in 219654.77 hectare, basic farmland area 219654.77 hectare with its percentage of farmland maintaining 93.48%, arrangement of land development and re-assortment 22072 hectare, ecological land withdrawal 16000 hectare, percentage of forest coverage 55.50% and treatment of water-earth-lost area in layout period 50000 hectare.Based on the above matter and according to ecologic function of land utilization, Leshan city is divided into 1 first class zone, 2 second class zones and 7 third class zones. Proposal of ecologic function oriented and industrial layout in different zones and highlight of environment improvement are mentioned. I also state the mold of environment friendly land utilization in Leshan, consisting of "ecologic city oriented land utilization mode" in central urban of Leshan, "compound ecologic fanning land utilization mode" in basin, plain and hill areas in north-east Le Shan, "mountain oriented ecologic land utilization mold" in south-west Leshan and relative controlled space method. The text also discuss the implement and of guarantee system and way in aspects of law, economy, administration and technology.Proved by technical feasibility, economic feasibility, ecological feasibility and structural feasibility, layout method will not only ensure rapid economic development in Le Shan, but also improve ecological environment, which embodies the principle of sustainable development.