山地农业区耕地资源空间分布状况——以云南省玉溪市为例  

Space Distributing and Using of Cultivated Land in a Mountains Area

作　　者：杨庆华[1] 杨世先[1] 马文彬[1] 施正丹[1] 

机构地区：[1]玉溪市农业科学研究所,云南玉溪653100

出　　处：《山地学报》2005年第6期749-755,共7页Mountain Research

摘　　要：山地农业区,由于山体、河流、沟壑及其他非耕用地的分割、分隔、充斥和抬升作用等原因,其耕地的分布状况、生产潜力和利用质量与平原地区相比均存在较大差别.传统对山区耕地分布状况的分析,多采取定性的方法,不利于对问题进行深入的比较研究.以玉溪市为对象区,按照'表征准确、计算简单、资料易得'的原则提出了'优势度'、'零散度'、'分散指数'、'耕作半径'等数量指标来定量描述、分析玉溪市耕地资源的分布状况及其在利用方面存在的差别.首次明确提出了玉溪市西部地区耕地利用质量明显低于东部地区,其利用途径与东部地区相比也存在较大差别;并对不同海拔区域耕地资源在生产潜力和生产的组织成本存在的差别进行了比较深入的定量分析,明确提出1 300～2000 m和800 m海拔以下两个区域的耕地其生产潜力和组织成本均优于800～1 300m和2000 m以上两个区域.在此基础上,提出了玉溪市不同区域耕地利用方向和原则.Comparing a mountainous area with a plain, there are many differences on the space distributing of plow land-resources in a mountainous area. The differences are important for agricultural production. In the tradition, the method on the space distributing analysis of plow land-resources of a mountainous area is used to be qualitative and so that we can＇ t compare in difference area and make a relationship in difference studies. In the research, predominance degrees, parting degrees, scattered index and geoponic radius were applied in the quantitative analysis on space distributing of plow land-resources of mountainous area in Yuxi city and it made a success in getting to the bottom of space distributing of plow land-resources in Yuxi. The peper first time put forward： the using quantity of farmland in western region of Yuxi is obvious lower than eastern region, its exploitation path was also much difference than eastern region. The more quantitative analysis on the farmland resources in the different altitude-region give expression to the potential of producing to proceed with the difference of the distinction , and clear to point out： Produce and potential with organizes the cost at 1 300-2 000 m with 800 m elevation below two farmlands of district all surpass 800-1 300 m with 2 000 m above two districts. Be on ground , clear to point out the different district farmland makes use of the direction with the principle of Yuxi city.

关 键 词：山区 耕地资源 空间分布 利用 玉溪 

分 类 号：F301[经济管理—产业经济]