村庄地籍调查之宗地自动编号的实现

主要探讨了村庄地籍调查中宗地自动编号的实现过程,详细阐述了宗地自动编号程序的设计思路和关键技术,并针对编号过程中容易产生的问题,给出了改进方法。经实践证明,效果良好。     

城镇地籍调查资料的录入

在外业对城镇地籍调查工作结束后,内业对取得的资料进行信息录入.本文主要阐述了应用国图软件对地籍调查表的信息录入,及在属性录入过程中,针对发现的问题所提出的解决方法,以便给今后的工作带来方便.     

基于加权图的地籍时空数据描述模型研究

以计算机通用的数据结构——图为基础，研究了基于加权图的时空数据组织策略，为表达时空语义提供了一种形式化的描述方法，并分析了以该模型为中间件实现不同时空模型转换的应用前景。     

High resolution provenancing of long travelled dust deposited on the Southern Alps, New Zealand

On 7 February 2000 an atypical orange discolouration of snowfields in the central Southern Alps, New Zealand occurred following the passage of a cold front. Analysis of snow samples identified fine orangey-brown dust mixed with much coarser grey dust. Air parcel forward trajectories from dust sources in southern and central Australia, where dust storms were reported on 4 February 2000, were computed to identify the deposits source. Geochemical analyses of the dust deposit using 26 trace elements, unaffected by regional air pollution and gravitational sorting, indicate that 20% of the dust was sourced from western New South Wales, with 45% from the eastern Eyre Peninsula of South Australia and the remaining 35% was local New Zealand dust. This provenancing approach provides a spatial resolution of long travelled dust sourcing not previously achieved.     

Parameterization for the depth of the entrainment zone above the convectively mixed layer

It has been noted that when the convective Richardson number Ri* is used to characterize the depth of the entrainment zone, various parameterization schemes can be obtained. This situation is often attributed to the invalidity of parcel theory. However, evidence shows that the convective Richardson number Ri^* might be an improper characteristic scaling parameter for the entrainment process. An attempt to use an innovative parameter to parameterize the entrainment-zone thickness has been made in this paper.Based on the examination of the data of water-tank experiments and atmospheric measurements, it is found that the total lapse rate of potential temperature across the entrainment zone is proportional to that of the capping inversion layer. Inserting this relationship into the so-called parcel theory, it thus gives a new parameterization scheme for the depth of the entrainment zone. This scheme includes the lapse rate of the capping inversion layer that plays an important role in the entrainment process. Its physical representation is reasonable. The new scheme gives a better ordering of the data measured in both watertank and atmosphere as compared with the traditional method using Ri^*. These indicate that the parcel theory can describe the entrainment process suitably and that the new parameter is better than Ri^*.     

基于GIS与RS一体化的变更地块判别方法

针对土地利用动态监测面临的实际情况,提出了一种GIS与RS一体化的变更地块判别方法。该方法以矢量图斑为研究对象、以GIS的地理信息与RS的遥感影像信息为特征来源,提取图斑的特征向量。在设计识别方法时,将土地利用变更地块的识别变通成对标准地类的识别,同时引入"落入"、"误判高发区"的概念以降低变更地块的漏判率。经试验,该方法基本可替代土地利用动态监测中的人工判读工作。     

基于MicroStation的地籍测量系统的设计与实现

本文从地籍工作的特点入手,根据用户的需求,对地籍测量系统的基本功能进行了总体设计,然后基于Microstation平台,采用VisualBasic6.0为编程实现语言,对地籍测量系统的功能进行了详细设计与开发。系统不仅能满足地籍测量自动化,管理信息化的要求,而且具有土地登记、土地面积自动量算、土地统计、信息查询、成果输出等功能,在实践中得到较好的应用。     

利用ArcSDE和MapObjects进行地籍历史数据回溯

利用ArcSDE和MapObjects技术,采用时间加空间关系的数据模型,设计了现状宗地库和历史宗地库,提出了地籍数据历史回溯的设计思想并进行了实践。     

数字化测量技术在地籍调查工作中的应用

结合吉林省某市地籍调查工作,阐述了数字化测量技术在地籍调查工作中的步骤、应用程序及重要性,论证了其精度可靠、方便快捷、广泛适用于地籍工作的特点。     

城市三维地籍管理的研究

随着城市建设的不断向上、向下拓展,地下宗地、地上宗地渐渐成为地籍管理的一部分,传统的二维地籍管理系统开始不能满足最新地籍管理的需求,迫切需要引入三维地籍的理念,将二维不能描述的三维空间关系清晰得展示出来。本文在综合分析现有二维地籍管理系统优势的基础上,着重介绍了宗地的三维产权、三维地籍测量以及二三维混合管理模式,提出了目前情况下,建立三维地籍的整体思路,为三维地籍管理系统的建设提供一个参考。