近14年安徽省耕地资源安全的时空特征  

Spatiotemporal Characteristics in Cultivated Land Resources Security in Anhui Province

作　　者：吴艳飞[1] 徐羽[2,1] 徐刚[1] 

机构地区：[1]西南大学地理科学学院,重庆400715 [2]南京大学地理与海洋科学学院,江苏南京210023

出　　处：《水土保持通报》2017年第6期236-241,I0012,共7页Bulletin of Soil and Water Conservation

基　　金：国家自然科学基金项目“豫西末次盛冰期以来季风事件的高分辨率石笋记录与气候意义”(41372177)

摘　　要：[目的]探究近14a安徽省耕地资源安全时空特征,为安徽省社会经济发展和耕地保护提供依据。[方法]从耕地资源数量、质量和生态安全3个方面选取27个评价指标,构建耕地资源综合安全评价体系。[结果](1)安徽省耕地数量和质量安全程度分别呈下降和上升趋势,生态安全等级较为稳定,综合安全呈缓慢上升趋势;(2)耕地资源数量安全总体呈皖东、皖北高于皖南的空间格局;质量安全呈现皖中、皖南高于皖北的特征;生态安全表现为皖中部和皖南较低,其余较高的空间格局;综合安全与数量安全空间分布具有相似性,且在时间上,低安全等级地市呈现"集中—分散"的空间特征,高安全程度地市反之。(3)近14a安徽省耕地资源数量、质量和生态安全的主要障碍因子具有明显的时间变化特征。[结论]安徽省耕地资源安全情况不容乐观,各地区需因地制宜,提高安全保障程度。[Objective]The spatio-temporal characteristics of cultivated land resources security in Anhui Province in recent 14 years were illustrated,in order to provide directions for economic development and land resource protection.[Methods]In terms of 27 selected indicators from three aspects as quantitative security,qualitative security and ecological security,an integrated assessment system of cultivated land resources was established.[Results]（1） The quantitative and qualitative security of cultivated land resources showed decreasing and increasing trends,respectively.Ecology security remained stable,and the integrated security showed an upward trend.（2） The spatial characteristics of quantitative security showed high values in the east and North of Anhui Province and low values in the South of Anhui Province;the values of qualitative security were higher in the middle and south of Anhui Province;moreover,the ecological security in the middle and south regions was lower than that in other areas;the spatial characteristics of integrated security of cultivated land resources was similar to that of quantitative security.The cities with low integrated security levels presented a characteristics of concentration to dispersal,and it was opposite for the high integrated security level cities.（3） The main obstacle factors of quantitative,qualitative and ecological security of cultivated land resources showed an obvious variation features.[Conclusion]The situation of the cultivated land resources security in Anhui Province was still severe.Appropriate method,therefore,should be taken to improve the level of security.

关 键 词：耕地资源综合安全 数量安全 质量安全 生态安全 安徽省 

分 类 号：F301.1[经济管理—产业经济]