Study On Pothook Of City Construction Land Increase And Rural Construction Land Decrease In Land Use Planning

At present our country is in the stage of accelerating industrialization and urbanization, land resources scarcity and the unreasonable structure has restricted the development of economy and society. Urban construction land is in a tense contradiction of supply and demand, whereas rural resident land is used in low efficiency, which have seriously affected the effective use of land resources and land resource protection goal. In land use planning process, the key to realize harmonious development between urban and rural is to carry out pothook of city construction land increase and rural construction land decrease. This paper discussed the theory, methods, techniques of the policy of pothook of city construction land increase in land use planning, and took Qinghe county of Hebei province as a example, providing pothook in the new round land use planning with a reasonable method. Research content of this paper are as followsFirstly, per capita indicator method, trendy forecasting method and Gray GM(1,1) model were applied to predict the demand of urban construction land. The result shows that urban construction land area in Qinghe county will be 3400.57hm~2. Urban construction land area was 2274.63hm~2 in 2009. According to the construction land demand, 1125.94 hm~2 land will be added to urban construction land area. However, there is only 561.95hm~2 land for development. So the remaining 563.99hm~2 has to be given by pothook.Secondly, based on the population in a certain period, rural resident area was calculated. Then we can get the extent of the rural resident which can be consolidated. Considering that there are lots of other factors restricting the consolidation potential of rural resident, analytic hierarchy process was used to establish index system restrained by economical, social and land resources. The index weights were calculated by using AHP method. By using the above methods, the consolidation potential of rural resident is 2614.54hm~2.Then cutting the area which must be removed and the area which has to be arranged for the residents,the remaining 925.33hm~2 is the pothook potential. Compared with pothook demand(563.99hm~2) , we can see that it can meet the demands of pothook.Finally, consolidation area of rural resident was calculated. The consolidation area of rural resident was divided into three parts, area which must be removed, area which has to be arranged for the residents and area arranged for pothook. Arable land grading and appraisal method was adopted to realize the requisition-compensation balance. By this method, we can ensure the quality of the arable land which is consolidated by the rural resident. The grade of the new arable land was evaluated according to the related standard and technical provision. Then overlay the new construction land and arable land grading map, the area of every grade of arable land occupied by new construction land would show up. Calculate the grade conversion coefficient according to agricultural land natural utilization index and production capacity of crops. At last, we can get the area of the rural areas consolidation which is 2269.32hm~2.