基于适宜性的济南市宜耕未利用地开发潜力评估

Exploitation potential of unutilized land suitable for cultivated land based on its suitability in Ji’nan City

为了实现粮食安全,未利用地作为后备耕地资源,是中国补充耕地的重要途径。该文以济南市为例,根据土地适宜性评价,估算宜耕未利用地的开发潜力,在此基础上,结合地形、交通条件、基础设施及区位等因素,运用聚类分析方法,对宜耕未利用地开发潜力进行分区。结果表明,济南市宜耕未利用地面积占未利用地总面积65.39%,但质量较差,受自然条件限制,各区县宜耕未利用地分布差异较大。从各潜力类型区分布来看,Ⅰ类潜力区主要分布于济南市北部,以平原为主,为优先开发潜力区。Ⅱ类潜力区分布较广,济南市北部、中部、南部均有分布,为次优先开发潜力区。Ⅲ类潜力区主要分布于济南市中部的城郊地带,为适度开发潜力区。Ⅳ类潜力区主要分布于济南市中部的山地丘陵区,为最差开发潜力区。该研究可确定济南市不同地域的未利用地开发时序,研究结果可为编制济南市未利用地开发规划提供参考。

For achieving food security,as the cultivated land reserve resources,the exploitation of unutilized land is an important approach to supplement cultivated land.Taking Ji’nan City,Capital of Shandong Province as an example and according to land suitability evaluation,the paper calculates the exploitation potential of unutilized land,and further considering factors such as topographical,traffic condition,infrastructure and location,divides potential areas with cluster analysis.The results show that 65.39%of the unutilized land are suitable for cultivated land,but the quality is lower.Limited by the natural factors,the distribution of the unutilized land suitable for cultivated land in various districts is different.Among all the distribution types of potential area,type Ⅰ mainly belongs to plain region in the north of Ji’nan City as a priority area.Type Ⅱ is widely distributed in the north,middle and south of Ji’nan City as the second priority area.Type Ⅲ mainly in the middle suburb of Ji’nan City is a moderate potential area for exploitation.Type Ⅳ mainly distributed in the hilly area of middle part of Ji’nan City is the worst potential area.This study can determine the exploiting sequence of the different regions in Ji’nan City and the research results can provide reference for the exploitation of unutilized land.