城市郊区基本农田安全风险研究——以眉山市东坡区为例  

Division of Prime Farmland Based on MCR ——A Case Study of Dongpo District in Meishan City

作　　者：白根川[1] 夏建国[1] 王昌全[1] 杨娟[1] 王鹏[1] 

机构地区：[1]四川农业大学资源学院,成都611130

出　　处：《土壤》2016年第1期167-172,共6页Soils

基　　金：国家科技支撑计划项目(2012BAD14B00)资助

摘　　要：基本农田生态风险区域的确定对保障粮食安全、实现经济社会的可持续发展具有十分重要的意义。本文基于GIS平台,利用最小累计阻力模型,对成都平原城市眉山市东坡区的基本农田生态风险区域进行了研究。在该研究中以东坡区基本农田规划图中提取的基本农田数据作为累计阻力"源",选取了坡度、土地利用类型等6个因子作为阻力层进行分析。结果通过把最小累计阻力栅格的突变点作为临界点,设定阈值,划分出了基于阻力值的4个功能区:基本农田生态安全重点区域、一般区域、过渡区域和非基本农田区域。基本农田安全风险区域的确定可为当地科学全面规划提供决策依据。Determination of basic farmland ecological risk region is important to ensure food security, sustainable economic and social development in China. Based on GIS and by using the minimum cumulative resistance model, basic farmland ecological risk region of Dongpo district in Meishan City, Chengdu plain city were evaluated. By choosing the basic farmland of Dongpo district as the ‘source＇, and taking slope, land use types, distance from the main road, distance from the secondary road, distance from the river and distance from ponds as the resistance layer, minimum cumulative resistance grid point mutations as a threshold point, four function areas named as basic farmland key area, general area, transition area and non basic farmland area had been determined. Determination of basic farmland ecological risk region can provide scientific decisionmaking basis for the study area.

关 键 词：基本农田 最小累计阻力模型 眉山市东坡区 阈值 

分 类 号：F301.23[经济管理—产业经济]