长江上游农业主产区耕地生态安全评价与空间特征研究  

Study on Ecological Security Evaluation and Spatial Characteristics of Cultivated Land of Agriculture Production Area in the Upper Yangtze River

作　　者：任平[1,2] 洪步庭[1,2] 周介铭[1,2] 

机构地区：[1]四川师范大学西南土地资源评价与监测教育部重点实验室,四川成都610066 [2]四川师范大学地理与资源科学学院,四川成都610066

出　　处：《中国人口·资源与环境》2013年第12期65-69,共5页China Population,Resources and Environment

基　　金：国家社会科学基金项目"国家粮食安全视角下的土地‘增减挂钩’制度评价与完善研究"(编号:11XJY019);国家"973"项目"国家尺度生态系统生物多样性保育功能评价"(编号:2009CB421105);国家自然科学基金项目"耕地资源非农化价值损失评价模型与响应机理研究"(编号:41301196);四川省科技支撑计划项目"基于RS和GIS技术的长江上游生态系统功能区划评价技术研究"(编号:2013FZ0057)

摘　　要：以长江上游农业主产区为研究区域,通过构建耕地生态安全评价指标体系,运用GIS空间分析技术,对其耕地生态安全水平和空间分布特征进行定量研究。研究结果表明,长江上游农业主产区耕地生态安全整体处于较差状态,生态安全三级区及以上区域占到了长江上游农业主产区耕地总面积的83.04%;从空间分布来看,耕地生态安全较差区域在空间上呈现"集中连片"的分布态势,主要分布于四川省的成都市、德阳市、绵阳市、遂宁市、泸州市、宜宾市、乐山市、眉山市、巴中市、达州市、攀枝花市和重庆市的万州区、梁平县、长寿区,生态较安全区及生态安全区呈现"插花分布"格局。该研究以期为长江上游耕地生态安全态势的预测与预警,促进耕地资源的可持续利用提供科学依据和决策参考。Taking the agricultural production area in the upper Yangtze River as the study area, this paper establishes an evaluation index system and uses GIS technology to make a quantitative research of the ecological security level and spatial characteristics of cuhivated land. The results indicate that the ecological security of cultivated land in the upper Yangtze River is in the worse condition in general ; 83.04% of the whole cultivated land area are the third-grade ecological security region and region above the third grade, which are in concentrated distribution. The worse ecological security regions are mainly located in Chengdu, Deyang, Mianyang, Suining, Luzhou, Yibin, Leshan, Meishan, Bazhong, Dazhou and Panzhihua of Sichuan Province, and Wanzhou, Liangping and Changshou of Chongqing City. Areas in relatively better and better conditions of ecological security present an scattered distribution. This research can provide scientific basis and decision-making reference for ecological security alarm and prediction of cultivated land in the upper Yangtze River and the promotion of cultivated land recourse sustainable utilization.

关 键 词：耕地资源 生态安全 空间特征 长江上游 

分 类 号：F301[经济管理—产业经济]