区域农业土地可持续利用的空间尺度效应分析--以京津冀地区为例

根据农业土地可持续利用的目标任务、利用方式及区域资源特征,构建了区域农业土地可持续利用系统的空间层次结构。在此基础上,以京津冀地区为例,通过建立不同利用方式、不同层次土地可持续利用系统评价指标体系,对京津冀地区农业土地利用层次系统进行了评价。利用评价结果,系统分析了土地可持续利用的空间尺度效应,相应提出了不同层次土地可持续利用的措施和途径。

SPATIAL SCALE EFFECTS OF REGIONAL AGRICULTURE LAND RESOURCES SUSTAINABLE USE--A CASE STUDY OF JING-JIN-JI REGION

Nowadays,the researches of sustainable agricultural land resources use(SALRU) mainly focus on the field such as concept,systematic analysis,evaluation and countermeasure.At the same time,based on the regional differences,the practice researches for regional SALRU are processed widely.But the practice researches are almost a sort of single-level model method,and the relation of regional spatial scale is ignored,which will make it difficult to bring forward systematic and scientific decision-making.In this study,Jing-jin-ji Region is selected as the study case.Using methods of systematic theory,geographical information system(GIS) technology,field survey and statistical ways,this paper,based on the goal,types and regional resources of SALRU,builds the 3-level structure of SLRU system.And the corresponding rating of regionalism is confirmed.Subsequently,according to the rating of regionalism,3-level evaluation units of SALRU for Jing-jin-ji Region are settled.Then,using the evaluation model of integrative index,this paper evaluates systematically the sustainability of land resources use in Jing-jin-ji Region.Using the results above evaluated,spatial scale effects in Jing-jin-ji Region are analyzed,and corresponding countermeasures are put forward in different levels for sustainable land resources use.