陕西省农用地资源禀赋的格局演变及空间分异

了解区域土地资源的禀赋是合理组织土地资源利用的前提和基础,探讨土地资源禀赋的评价并对具体区域的土地资源禀赋进行研究具有十分重要的理论与现实意义。基于2001年-2014年陕西省农用地利用及国民经济发展相关数据,以陕西省11个地市农用地资源为研究对象,从农用地数量、质量、结构和效益4个维度构建指标体系评价陕西省农用地资源禀赋度并揭示其演变过程和空间分异特征。结果表明:(1)陕西省农用地资源禀赋总体发展趋势呈先下降后上升状态且等级格局变动明显,下降幅度最大的是商洛市,上升幅度最大的是铜川市,杨凌示范区农用地资源禀赋度在研究时段内保持最高。(2)陕西省农用地资源禀赋空间分异显著且与陕西省自然地理分区呈耦合关系,关中地区的农用地资源禀赋度最高,其次是陕北地区,陕南地区最低。今后应根据区域特点,采取针对措施,提高区域农用地资源禀赋。

Study of Pattern Evolution and Spatial Distribution of Agricultural Land Resource Endowment in Shaanxi Province

Understanding the land resource endowment of a region is a prerequisite and basis for the rational organization of land resources utilization.It has important theoretical and practical significance to discusse the evaluation of land resources endowment and study the land resources endowment in specific area.Based on agricultural land use and national economic development date from 2001 to 2014,we selected the agricultural land resources of 11 counties in Shaanxi Province as the basic research units,and established the evaluation index system of agricultural land resource endowment degree from the aspects of the agricultural land quantity,quality,structure and efficiency to evaluate the pattern evolution and spatial distribution of the agricultural land resource endowment degree in Shaanxi Province.The results indicated that:the overall trend of the agricultural land resource endowment degree in Shaanxi Province was dropping first and then rising,and the pattern changed significantly.The city with the most reduction of the agricultural land resource endowment degree is Shangluo,while the most increase of the endowment degree occurred in Tongchuan,the peak of each study point was observed in Yangling Demonstration Zone.The agricultural land resource endowment degree in Shaanxi Province presented obvious spatial distribution and obvious coupling with the natural geographical partition.The agricultural land resource endowment degree in Guanzhong ranked the top,followed by northern Shaanxi and southern Shaanxi.According to the regional character,pertinent measures should be taken in the future to improve the agricultural land resource endowment degree.