ARCGIS支持下的景观细碎化与耕地利用效率关系研究-以甘肃省康乐县为例  

The relationship between landscape fragmentation and cultivated land use efficiency——Case of Kangle country,Gansu province

作　　者：白志远[1] 陈英[1] 谢保鹏[1] 吴玮[1] 

机构地区：[1]甘肃农业大学资源与环境学院,兰州730070

出　　处：《干旱区资源与环境》2014年第4期42-47,共6页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目(编号:71263003)资助

摘　　要：研究细碎化与耕地利用效率的关系,探析造成耕地细碎化的因素,为降低农业生产成本,提高耕地利用效率提供参考。运用生态学景观格局原理测算康乐县耕地细碎化水平,运用数据包络分析测算耕地利用的纯技术效率和规模效率,运用SPSS软件测度细碎化水平与耕地利用的纯技术效率和规模效率的相关关系。研究结果表明:康乐县全县的纯技术效率和规模效率分别为1.000和0.898,处于规模报酬递减阶段;8个乡镇的规模效率没有达到最优,5个乡镇的纯技术效率没有达到最优。在康乐县,由于农业现代化水平较低,细碎化与耕地利用效率并未呈现明显的相关关系,而与单位面积耕地机械动力和劳动力数量呈明显的相关性。In this research we analyzed the relation between fragmentation and using efficiency of cultivated land the factors making cultivated land fracturing,gave some suggest to reduce agriculture production cost and improve the using efficiency of cultivated land. Supported by Arcgis,the cultivated land fragmentation degree of Kangle county was calculated with the theory of landscape ecology,technical efficiency and scale efficiency of cultivated land was calculated with DEA,then the relationships between cultivated land fragmentation degree and technical efficiency and scale efficiency were analyzed with SPSS. The results of the research showed that the combined efficiency,technical efficiency and scale efficiency were 0. 898,1. 000 and 0. 898,in the stage of scale efficienly decreae. Among the 15 towns of Kangle county,cultivated land use overall efficiency of 7 towns achieved optimum,scale efficiency of 8 towns or technical efficiency of 5 towns did not achieve optimum. In the west of China,limited by the economic and social factors,the level of agricultural modernization was low,the relationship between landscape fragmentation and cultivated land use efficiency was not obvious,the relationship between landscape fragmentation and mechanical power and quantity of labour force of unit area cultivated land was obvious.

关 键 词：土地 细碎化 利用效率 景观指数 相关关系 康乐县 

分 类 号：F301.2[经济管理—产业经济]