贵阳市土地类型和自然区划

一定区域内的土地特征,是该地自然条件的全面综合反映。因此,在土地类型调查研究基础上,按照土地结构的相似性和差异性,自下而上地合并自然区划单位,更能准确地反映客观实际。     

城市土地定级综合评价模型及其计算模型

城市土地定级综合评定是一项十分复杂的系统工程。本文选用模糊数学中多级综合评判的原理和方法,建立了城市土地定级的两级综合评价模型及评价指标。通过综合评定,可分选出与城市开发建设相适应的土地分类级别,为城市土地转让估价提供了定量依据。     

浅议土地供应制度的改革

根据我国现行法律、法规，集体建设用地与国有建设用地存在“待遇”上的巨大差异，集体建设用地是农民最重要的财产，集体建设用地与国有建设用地不平等的“待遇”，使集体建设用地不能以市场方式有效地合理配置，影响到农业、农村和农民稳定与发展。允许集体建设用地流转，改变土地供应制度，建立以土地用途管制为核心的城乡建设用地统一的市场，建立农民土地保障基金机制是保护农民土地财产权，提高生产力发展水平，增加农民收入的要求。     

Gaussian approximations to conditional distributions for multi-Gaussian processes

Suppose a multi-Gaussian process is observed at some set of sites, and we wish to obtain the conditional block grade distribution given some observations. We show that this conditional distribution is approximately Gaussian under certain conditions. In particular, given a single observation from a continuous multi-Gaussian process, the conditional distribution under a small change of support is approximately Gaussian unless, roughly speaking, the observed process is twice differentiable and the observation site is at the center of mass of the support region. A Gaussian approximation for the conditional prediction error of the total ore in a fixed region is considered also, although an example demonstrates that a naive analysis can give incorrect limiting conditional means.     

THE DYNAMIC MONITORING OF HORQIN SAND LAND USING REMOTE SENSING

Hurqin Sand Land is regarded as the typical region for studying the problem of desertification.The integra-tion of 3S(GIS,GPS and RS)techniques offer a most helpful method to study and monitor the dynamics of desertification.Based on the data derived from 3 periodsˊmultitemporal Landsat TM imagery of the 1990s,the regional land use and dynamo-ics of desertification in Horqin Sand Land were studied.The main results revealed that :1)as long as the general change tendency was concerned,the desertification of Horqin Sand Land would continue to spread;2)there was a gradual de-crease in the area of both moving sand dunes and semi-stabilized ones,which meant that fruitful progress had been made to control the desertification during the 1990s;3)as a result of unreasonable cultivation,the total area of stabilized sand dunes and grassland in the middle and western region decreased obviously.It suggested that the increasing damage caused by human was leading to the hazard of further desertification.So in the future,it is necessary to take more effect-tive measures to control the spread of desertification and restore the degraded ecosystems for the purpose of optimizing the global eco-environment in Horqin Sand Land.     

努力开创全省国土资源工作新局面

对“十五”计划开局之年的全省国土资源工作取得的新进展作了回顾。面对 2 0 0 2年新的形势和任务 ,要求国土资源系统全体干部职工做到 :认清形势 ,统一思想 ,进一步坚定做好国土资源管理工作的信心 ;明确任务 ,突出重点 ,全面提高国土资源管理水平 ;与时俱进 ,团结奋斗 ,努力开创国土资源管理工作新局面。     

基于ArcIMS的高校土地与房产管理信息系统的建立

针对高校土地与房屋管理中的业务特点及需求,设计开发了土地与房产管理信息系统:基于ArcSDE与SQLServer2000设计建立空间数据库;基于ArcIMS和ASP.NET,开发图形分布平台,实现了图属互查、统计分析等功能;基于ASP.NET开发属性数据管理系统,实现属性数据的实时编辑更新。     

集体土地地籍调查外业工作方法的探讨

主要介绍集体土地地籍调查的基本作业流程和具体方法,并对几个关键工序进行了比较详细的阐述,同时也提出了利用航测方法进行采集地物要素的方法和优缺点。     

基于X-Bridge的土地整理项日审批平台建设

本文首先介绍了国家土地开发整理项目管理信息系统的开发背景,接着对系统采用的X-Bridge平台的基本概念和工作原理进行了分析然后针对基于X-Bridge平台建设土地整理项目审批平台的实现原理、技术方法和主要功能进行了详细的阐述。该审批平台是整个国土资源部土地开发整理项目管理信息系统中的重要组成部分,是一个相对独立的系统。最后对平台成果进行了小结,证明了该系统的先进性、稳定性及待完善的工作。     

Evaluation of shallow geothermal energy resources in the Beijing-Tianjin-Hebei Plain based on land use

To discover the characteristics, distribution and potential of shallow geothermal energy in the Beijing-Tianjin-Hebei Plain area. This paper, based on a large amount of data collection and field investigations, evaluateed the shallow-layer geothermal energy in the study area through the analytic hierarchy process and comprehensive index method. Based on suitability zoning results superimposed with 1:100 000 land use data, the study area is divided into encouraged, controlled, restricted and prospective mining areas regarding the development of shallow geothermal energy, and the economic availability of shallow geothermal energy in the encouraged and controlled areas are evaluated. The results show that the shallow geothermal energy in the Beijing-Tianjin-Hebei Plain can meet the heating and cooling demand of 6×108 m~2 of buildings, equivalent to 1.15×10~7 t of standard coal, thus reducing carbon dioxide emissions by 2.73×10~7 t and reducing sulfur dioxide emissions by 1.95×10~5 t. According to the development and utilization mode, the energy demand level and the Beijing-Tianjin-Hebei coordinated development plan, the development and utilization of geothermal resources in the plain area has two types: Urban concentrated mining areas and rural scattered mining areas. The scale and level of intensive utilization of regional geothermal resources are of great significance.