基于空间功能值的矿粮复合区三生空间重构

在分析矿区对"三生空间"分布影响基础上,重构三生空间,实现空间优化和协调发展。该文以江西省上饶市弋阳县旭光乡矿粮复合区为研究区域,借助每个村庄斑块所表现出的住户数量来表示生活空间功能值,采用地区修正后的单位面积价值当量法测算得到生态和生产空间功能值,并基于AVC(吸引力、生命力和承载力)理论调整"三生空间"布局。结果表明:矿区对生产-生活-生态空间具有一定的负面影响,表现为"三生空间"功能值与矿区距离成反比;生产-生活-生态空间无序镶嵌分布,具有少数集中、大多数分散的特点;经过空间重构,提高了三生空间功能值,空间格局由无序向规整转变。通过以AVC理论和空间功能值为空间重构理论依据重构后,生态空间功能值由23587.22万元增加到24 307.13万元,生产-生活-生态空间有序镶嵌、多数集中、少数零星分布。

Reconstruction of living, production and ecological space based on spatial functional value in mine-grain mixed zone

Mining areas include production areas, the living areas for workers and their families, as well as local farmers. While mine-grain mixed zone refers to the compound area of main grain-producing areas and main producing areas of mineral resources, which not only ensures normal mining activities of mineral resources, but also ensures the output and quality of grain production. We could learn that there are difference between mining area and mine-grain mixed zone in definition. The mine and grain mixed zone has more complex function than mining area alone. Mining activities will produce exhaust gas, waste water, waste residue and other wastes that will pollute the atmospheric environment, water, and soils harmful to animal, plant and people in the area. In addition, the level of land use diversity in mine-grain mixed area production is higher than other areas such as sole mining, or farming area. From this view, the conflict of living, production and ecological space in mine and grain composite area is more serious. However, the extent of the living, production and ecological space conflict in mine-grain mixed area is not very clearly known at present. It may be affected by both the mining activities and grain production. All of these problems need to be studied. Therefore, the purpose of this paper is to study whether the gold mine area impacts on the spatial distribution of living, production and ecological space. Based on both the theory of AVC (attractive, vitality and capacity) and space function values ,we reconstructed the spatial distribution of living, production and ecological space, and realized the spatial optimization and coordinated development. During the process of optimization, we set a goal of building a habitability, suitable for tourism and suitable for industrial environment. And taking Xuguang township, Yiyang County, mine-grain mixed zone as the studied area, the space function value was calculated by adjusted value per unit area equivalent method, and we adjusted stroke of spatial layout based on the theory of AVC and space function values. The results showed that the mining area had certain negative effects on living, production and ecological space. Besides, the living, production and ecological space function value was inversely proportional to the distance from the mining area. In addition, the distribution of living, production and ecological space had the characteristics of minority concentration and most dispersion. While, both the function value of living, production and ecological space was improved and the spatial pattern was transformed from disorder to regulation after space reconstruction. In addition, the value of ecological space function increased from 23 587.22 ×104 yuan to 24 307.13×104 yuan.