基于景观连通性的怀来县未利用地开发建设适宜性评价

发布时间：2018-11-23 08:59

【摘要】：未利用地开发为建设用地是破解建设用地空间不足的重要途径,同时未利用地在维护景观生态环境方面发挥着巨大作用,实现对未利用地资源的合理开发,就需要处理好开发与保护之间的关系,降低未利用地开发建设过程中对景观生态造成的不利影响。本文以冀西北间山盆地的河北省怀来县为例,引入最小累积阻力模型,选取工程地质条件、地形地貌条件、区位因素条件、自然生态条件4个方面指标构建阻力面,并通过构建潜在雨水生态廊道和生态节点对未利用地开发建设适宜性评价结果进行优化。结果表明:1)基于最小累积阻力模型对未利用地进行建设适宜性评价,突出了已有城镇建设用地的作用,评价结果呈现集中分布的特点,有利于今后的规模开发利用。2)根据评价结果将研究区划分为适宜扩展区、较适宜扩展区、限制扩展区和禁止扩展区,面积分别为17 064.67 hm~2、20 468.30 hm~2、9 723.66 hm~2和7 993.82 hm~2。由此可见,怀来县未利用地开发为建设用地的潜力较大。3)将开发建设适宜性评价结果与潜在雨水生态廊道、生态节点进行叠加,打破了适宜性扩展区集中连片的扩展格局,有效地保障了区域景观生态的连通性。本研究丰富了山地丘陵区未利用地建设适宜性评价的内涵,可为科学合理利用未利用地资源提供技术支撑。
[Abstract]:The development of unused land for construction is an important way to solve the shortage of space for construction land. At the same time, unused land plays an important role in maintaining the landscape ecological environment and realizing the rational development of unused land resources. It is necessary to properly deal with the relationship between development and protection and to reduce the adverse effects on landscape ecology caused by the development and construction of unused land. This paper takes Huailai County of Hebei Province in the northwest of Hebei Province as an example, introduces the minimum cumulative resistance model, selects engineering geological conditions, terrain and geomorphological conditions, location factors and natural ecological conditions to construct resistance surface. By constructing potential Rain Water ecological corridor and ecological node, the suitability evaluation results of unused land development and construction were optimized. The results show that: 1) based on the minimum cumulative resistance model, the construction suitability of unused land is evaluated, which highlights the role of existing urban construction land, and the evaluation results show the characteristics of centralized distribution. 2) according to the evaluation results, the study area is divided into suitable extension area, more suitable expansion area, restricted expansion area and forbidden expansion area, Area 17 064.67 hm~2,20 468.30 hm~2,9 723.66 hm~2 and 7 993.82 hm~2. It can be seen that the unused land in Huailai County has great potential for development as construction land. 3) the evaluation results of suitability for development and construction are superposed with potential Rain Water ecological corridors and ecological nodes, thus breaking the pattern of expansion of the contiguous area of suitability expansion. It effectively guarantees the connectivity of regional landscape ecology. This study enriches the connotation of suitability evaluation of unused land construction in mountainous and hilly areas and provides technical support for scientific and rational utilization of unused land resources.
【作者单位】：河北农业大学国土资源学院;河北保定生态文明研究院;
【基金】：国土资源部公益性行业科研专项(201311060) “河北省典型地区未利用地调查与多宜性评价及利用对策”(2014995161)资助~~
【分类号】：F301.24

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