中文摘要：

目前,内容分析方法作为一种“黑箱技术”（Black Box Technique）在分析长时段的政策演变中得到广泛应用.其优势在于综合运用定量与定性分析方法可以测度出政策文本有关主题的本质、问题和发展趋势.采用内容分析方法对我国耕地占补平衡政策进行三维扫描,分别从政策的纵向层级、横向构成和出台时间的多维视角构建耕地占补平衡政策谱系,系统分析出台政策的数量、类型和特点;再对政策内容文本进行编码统计;最后从频数合计、频数排序,以及主题词频数升降变化趋势等维度对数据进行系统分析,为制定科学合理的公共政策提供现实依据.

英文摘要：

Currently, the mothod of eontent analysis as ＂black box technology＂ has heen widely used in the analysis of the evolution of long-period policies. Its advantage lies in the integrated use of quantitative and qualitative analysis methods that can measure the nature of policy texts on the keywords, issues and tremts. This paper ＂scanned＂ China＇s Cuhivated Land Requisition- Compensation Balance Policy texts on three dimensions, respectively from vertical hierarchy, horizontal composition and estahlished time to built up a pedigree of poliey system, and analyzed the policy number, type and characteristics. Then. this paper eonducted text coding and keywords statistics on the policies. Finally, from the total frequency, frequeney sorting amt frequeney ehanges, this paper analyzed the data system and provided realistic basis for policy making.