1、详细介绍第二次农村土地调查的技术流程，对获取遥感数据、DOM制作、遥感影像解译、外业调绘、数据处理、土地利用数据库的建设以及数据库变更进行实践探讨，分析这些过程中遇到的问题及提出解决方法。
2、探讨土地调查中数据处理的一些关键技术：例如数据格式转换、坐标系统的转换，介绍空间分析方法以及基于MapGIS平台的区与区叠加分析，提取变化量。
3、详细介绍土地调查中的误差来源，具体分析每个过程中数据质量问题的来源，并提出质量控制方法，着重介绍了遥感影像解译、数字化以及数据处理的质量问题，有针对性地提出相应的技术方法进行优化控制。
4、参考第二次农村土地调查数据库质检软件的缺陷等级，采用因素成对比较法结合特尔斐法（专家分析法）确定评价元素的权重，提出顾及土地精度要素的加权平均缺陷扣分法，并对数据库成果进行质量评价，结果表明，质量控制较为理想。
关键词：土地调查；MapGIS；数据库；质量控制
Land is human survival and development the important material base, is limited and non-renewable resources and precious wealth, facing society today of population, resources, environment etc on major issues with all land. With the rapid development of society and economy, urban population increase, use the land for construction demand has increased dramatically, land supply and demand and the increasingly prominent contradiction between economic development; In July, 2007, the national second land survey overall, objective is to ascertain nationwide comprehensive land use status and ownership condition, grasps the exact land based data, establish and perfect the land system, realize the socialization of land resource information service.
Combined with "3S" technology to develop the rural land use status investigation, land change survey and the construction of rural land u毕业论文http://www.751com.cn/ se database, it is overall, accurate, timely understanding of current land use of land resources, information sharing and realize the basis of land scientific management. Based on the second LinChuan area of rural land investigation, land change survey and remote sensing monitoring the actual working experience, access to domestic and foreign relevant academic research theory, the theory of practical method, rural land investigation at the county level, the database construction and quality control detail. Main results are as follows:
1, detailed introduces the second rural land survey of technology process, remote sensing data, DOM production, rs, field adjustable draw, data processing, the land use database construction and database alteration to carry on the practice, analysis discussed these process problems and proposes the solution method.
2 and discusses the land survey data processing of some key technologies: for example data format, coordinate system is introduced, and the conversion and spatial analysis method based on MapGIS platform area and area superposition analysis, extraction variation.
Three, detailed introduces the land survey of the error sources, specific analysis and each process data quality problem, and puts forward the source of quality control methods are introduced, and rs, digital, and the data processing quality problem, the corresponding optimized control technique.
4, reference second rural land survey database software defect levels, inspection by factors combined paired comparison Delphi method (the expert analysis method to determine the weights of evaluation elements), and puts forward the apllicant land precision elements weighted average defects, and the method of database points of quality evaluation results, the results show that, the quality control more ideal.