线目标间拓扑关系的细化计算方法

拓扑关系的细化计算是生产实践中提出的新的需求,代表了当今空间关系理论研究的趋势。本文从1∶5万数据更新质量检查的实际应用需求出发,研究提出线目标间复杂拓扑关系的分解-组合计算思路;讨论直线段拓扑关系计算的改进平面扫描计算方法;建立根据直线段拓扑关系推断局部拓扑关系的基本规则;给出由局部拓扑关系组合描述线目标间全局拓扑关系的拓扑链模型;将该方法应用于国家1∶5万地图数据库更新中,取得良好的效果。     

Management of spatially extensive natural resources in postwar contexts: working with the peace process

While extensively occurring natural resources play a fundamental role in the survival and recovery of postwar populations, their management is not presently part of the operational priorities in a peace process. Dependence on naturally occurring food, fuel, water, secure locations, and products that can be obtained and sold quickly for dislocated, war-weary populations is a primary approach to postwar livelihoods. The peace process, however, focuses on the logistical and institutional aspects of security, demobilization, reintegration and humanitarian efforts. The result is profound degradation of the spatially extensive resources necessary for longer-term recovery. The primary reason for the inattention to resource degradation in a peace process is that conventional conservation approaches do not fit with the priorities of a peace process or attend to the immediate needs of a postwar population; designed as they are for stable, peaceful settings. This article focuses on the need to derive postwar natural resource management approaches which can work with the in-place priorities of a peace process. Four such approaches are suggested, with successful examples from specific countries.

图斑群合并的渐进式方法研究

图斑合并（聚合和融合）是专题地图综合中一个很重要的任务。将小于面积阈值的图斑群的空间视觉冲突分为四类,针对不同的类型采取不同的策略,重点讨论了邻接小图斑群的渐进式合并方法。该方法有效地简化了整个计算过程,提高了计算效率,并使得合并前后的变化值达到最小。     

基于元数据的多源遥感影像数据库集成技术研究与实现

遥感技术快速发展带来了数据的多源异构问题。本文基于遥感数据的元数据信息,综合应用了当前数据集成中的多种技术手段,设计并实现了适合于不同环境的数据集成模型。通过选用本体模型解决了集成中的数据冲突问题;通过预先设置元数据的筛选条件,提供了智能化的快速数据查询机制。最后,以应急灾区遥感数据快速集成系统为例,验证了本文研究成果的可行性和实用性。     

规则格网DEM内插精度与效率分析

规则格网DEM是DEM的主要表示方式，应用最为广泛，影响DEM质量的关键因素便是内插过程，包括内插精度和效率两个方面。现有的诸多规则格网DEM内插方法基本都不能兼顾内插精度和效率，很大程度上制约了DEM的生产。本文在分析已有方法的基础上，提出了基于Delaunay冲突区域搜索策略的TIN内插规则格网DEM方法，并以实验对该方法进行验证和分析。实验结果表明文中所提方法对规则格网DEM内插精度与效率行之有效。     

地图数据库图形输出中要素关系处理

本文提出了利用地图数据库的检索功能，建立要素图形输出的定量优先级、地理要素图形大小，及基于地图数据库的图形冲突位置的探测方法，并将要素图形输出中的关系划分为五种进行分别处理。     

Environmental destruction as a counterinsurgency strategy in the Kurdistan region of Turkey

We examine environmental aspects of the conflict between the Turkish state and the insurgent Kurdistan Workers Party (Partiya Karkerên Kurdistan or PKK). Since the early 1990s, several civil society groups have claimed that the Turkish army burned forests and destroyed other livelihood resources in the Kurdistan region of Turkey as it evacuated settlements. We report the results of a case study of destruction in Tunceli, eastern Turkey, undertaken in order to evaluate support for such claims. We demonstrate the use of geospatial techniques in case-specific approaches to the study of armed conflict. Through the analysis of satellite images, we verified eyewitness reports and confirmed that substantial burnings did indeed take place in the study area between 1991 and 1994. We argue that this destruction was not irrational or wanton, but that it was part of a strategy used by the Turkish army in the early 1990s that aimed at actively transforming the war environment.     

Human–wildlife conflict and gender in protected area borderlands: A case study of costs, perceptions, and vulnerabilities from Uttarakhand (Uttaranchal), India

Human–wildlife conflict (HWC) is a growing problem for communities located at the borders of protected areas. Such conflicts commonly take place as crop-raiding events and as attack by wild animals, among other forms. This paper uses a feminist political ecology approach to examine these two problems in an agricultural village located at the border of Rajaji National Park in Uttarakhand (formerly Uttaranchal), India. Specifically, it investigates the following three questions: What are the “visible” and “hidden” costs of such conflict with wildlife? To what extent are these costs differentially borne by men and women? How do villagers perceive any such differences? Survey and interview data were collected from over 100 individuals in the study site over a period of 9 months in 2003–2004. It was found that for participants in this study, costs of HWC included decreased food security, changes to workload, decreased physical and psychological wellbeing, economic hardship, and at times an increase in illegal or dangerous activities. The research also showed that although women in the study area bore a disproportionate burden of these effects, roughly half of survey respondents perceived that men and women were equally affected. A possible explanation for this gap considers the relationships between gendered uses of space, work, status, and identity. The findings illustrate the importance of addressing both visible and hidden costs of HWC for members of park communities and support a call for increased gender-sensitivity in HWC research.