基于多因素综合评价的居民点整理时序确定

    Consolidation schedule determination of rural residential area in Yumen based on multi-factor comprehensive evaluation

    • 摘要: 为了科学确定农村居民点整理时序,构建了"潜力大小-斑块复杂程度-区位条件优劣"多因素评价体系,从农村居民点斑块形状复杂程度以及所处区位条件的优劣两方面分析其整理的难易程度和必要性大小,并将农村居民点分为"一级必要整理斑块"、"二级必要整理斑块"和"三级必要整理斑块",最后结合整理潜力分级结果将玉门市农村居民点整理划分为近期整理、中期整理和远期整理。结果表明:玉门市农村居民点潜力较大涉及22行政村,面积960.31 hm2,主要分布在昌马盆地区和花海绿洲平原区以及赤金-清泉绿洲区的部分行政村,潜力一般涉及32行政村,面积2 053.72 hm2,主要分布在玉门镇老城区以及玉门绿洲地区大部分行政村,潜力不大涉及 3个行政村,面积304.90 hm2,主要分布在玉门新市区城市规划范围内的部分行政村;玉门市一级必要整理农村居民点斑块面积1 291.08 hm2,二级必要整理农村居民点斑块面积1 712.2 hm2,三级必要整理农村居民点斑块面积315.64 hm2。通过叠加居民点整理潜力及整理优先度分级结果图层,得出玉门市近期需整理农村居民点 426.05 hm2,中期需整理635.40 hm2,远期需整理2 257.48 hm2。该文研究结果可为农村居民点整理时序确定提供一个新思路,为玉门市农村居民点整理规划提供决策依据。

       

      Abstract: Abstract: In this paper, we constructed the comprehensive evaluation system, including identification of the potentiality, the complexity of patch shape and location condition. It aimed at determining consolidation schedule on rural residential area. The difficulty and necessity have been analyzed respectively from the complexity of patch shape and feature of location condition in rural residential area. Rural habitat consolidation tailored to the consolidation potential was mainly divided into three different parts, namely, the short-term, medium-term, and long-term consolidations. Firstly, we combined with socio-economic data and "village" as a unit. The rating of consolidation potential on rural residential area was determined by comprehensive evaluation and the potentiality of consolidation was identified from the macro level. Secondly, the features of patch shape were analyzed by the landscape ecology. The ratings were determined on the complexity of patch and location condition in rural residential area within the territory of Yumen city. Based on this, it weighed for the rating on the complexity of patch shape and location condition using raster calculator through the spatial overlay. After that, we identified the priority of the habitat consolidation. Finally, the consolidation schedule on rural residential area was determined in space and time dimension. The result showed that there was obvious difference on consolidation potential for rural residential area in Yumen. The relatively greater potential area covered 22 administrative villages, about 960.31 hm2, while medium potential area included 32 administrative villages with 2 053.72 hm2, and lower potential area had three administrative villages with 908.26 hectares. According to the rating results on the complexity of patch shape in rural residential area, the consolidation potential from grade Ⅰ to Ⅴ was 766.25 hm2, 731.93 hm2, 908.26 hm2, 535.14 hm2 and 377.30 hm2, respectively. As a result, the higher the potential level was, the lower the complexity of patch it was. Given the rating results in rural residential area, it showed that the location condition from grade Ⅰ to grade Ⅴ was 827.83 hm2, 1 096.09 hm2, 789.81 hm2, 513.63 hm2 and 119.11 hm2, respectively. The higher level meant the poor location condition. The patch size of the priority consolidation, secondary consolidation, and final consolidation on rural residential area in Yumen was respectively 1 291.08 hm2, 1 712.2 hm2, 315.64 hm2. From the calculated results of consolidation potential for rural residential area, we concluded that there were 426.05 hm2 needed to be consolidated in the short term, 635.40 hm2 in the medium term and 2 257.48 hm2 in the long term. The rural residential area was regarded as a basic research unit, and this paper completely examined the relationship between the feature of patch shape and habitat consolidation. At the same time, location condition of the patch also can be comprehensively analyzed. On the one hand, the complexity of patch shape determined the difficulty of consolidation. On the other hand, identification of location condition determined the necessity of consolidation. Both sides have a comprehensive impact on the priority of habitat consolidation. This paper will not only help guide the consolidation of rural residential area, but also will provide the relatively reasonable arrangement on the timeline for consolidation in Yumen.

       

    /

    返回文章
    返回