针对CAD规划数据入库编码的研究

CAD规划数据作为城市基础地理信息系统平台的前端数据源,它要经过CAD到GIS数据的格式转换才能为基础地理信息系统所使用,而在转换过程中往往会产生数据丢失.为了解决这一问题,本文针对CAD规划数据的特点,制定了一套有效的地理编码方案,实现了对CAD规划数据的无损入库.     

土地利用总体规划中农村居民点综合整治研究

本文阐述了土地利用总体规划中农村居民点综合整治的意义及整体思路。在对政和县农村居民点用地现状分析的基础上,结合土地利用总体规划,合理测算了到2020年政和县农村居民点潜力与整治目标,提出了不同区域农村居民点综合整治的模式以及促进农村居民点综合整治目标实施的建议。     

ArcGIS平台下土地利用规划中的信息化管理

土地利用规划管理是我国国土资源管理部门的重要工作,将土地利用规划管理作为研究对象,尝试建立在以ArcGIS平台为信息化载体的基础上,对我国土地利用规划工作的信息化管理进行研究与探讨,并提出土地利用规划在信息化管理发展方向上的未来展望。     

苏北沿海地面沉降区地下水资源管理对策探讨

苏锡常地区实例证明,沿用单一的取水许可制度已很难解决地下水资源超采及由此引发的地面沉降地质灾害问题,地下水资源管理目标应定位于地质环境保护前提下的科学适度开采。对苏北沿海盐城、大丰地面沉降区现行的地下水资源管理制度进行了探索性补充设计,重点探讨了地下水开采权交易模型和地下水资源动态规划机制,为该地区今后的地下水资源管理提供了思路。     

找矿突破战略行动中的利益主体关系

找矿突破战略行动是缓解中国资源瓶颈的重要战略举措,找矿新机制的核心是建立合理的利益分配机制,处理好多元利益主体的关系。运用企业利益相关者理论,分析找矿突破战略行动中的利益主体及相互关系,着重剖析了找矿行动的利益主体关系的矛盾现象和原因。借鉴实际案例,提出建立合理的利益分配机制、明确找矿主体、加强对省级地勘基金管理、建设和谐矿山等建议。     

四川锂辉石矿地质勘查规划研究

经查阅近年对锂辉石矿的勘查资料,较系统对比全省锂辉石成矿地质条件、成矿远景区划和区域矿产背景,结合市场对锂资源量的需求和全省锂资源的潜力分析,提出了近阶段锂辉石地质勘查工作部署的初步构想,有望在现有基础上实现四川查明锂资源量翻番,提高四川锂等稀有金属资源的安全保障程度。     

Simulating urban growth under planning policies through parcel-based cellular automata (ParCA) model

In recent decades, the cellular automata model, among the urban development prediction models, has been applied considerably. Studies show that the output of conventional cellular automata models is sensitive to cell size and neighborhood structure, and varies with changes in the size of these parameters. To solve this problem, vector-based cellular automata models have been introduced which have overcome the mentioned limitations and presented better results. The aim of this study was to present a parcel-based cellular automata (ParCA) model for simulating urban growth under planning policies. In this model, undeveloped areas are first subdivided into smaller parcels, based on some geometric parameters; then, neighborhood effect of parcels is defined in a radial structure, based on a weighted function of distance, area, land-use, and service level of irregular cadastral parcels. After that, neighborhood effect is evaluated using three components, including compactness, dependency and compatibility. The presented model was implemented and analyzed using data from municipal region 22 of Tehran. The obtained results indicated the high ability of ParCA model in allocating various land-uses to parcels in the appropriateness of the layout of different land-uses. This model can be used in decision-making and urban land-use planning activities, since it provides the possibility of allocating different urban land-use types and assessing different urban-growth scenarios.     

Assessing the quality of data required to identify effective marine protected areas

This study aims to evaluate the effectiveness of currently available substrate data to designate marine reserves to meet conservation objectives. The case study site is Lyme Bay (approx. 2460 km²), in the western English Channel. An area of 240 km² in Lyme Bay was designated ‘closed to bottom dredging’ in July 2008 with the aim of protecting reefs which are an important habitat for Eunicella verrucosa (pink sea fan). The effects of using different substrate data resolution on the selection of sites to protect a range of biotopes using the Marxan package are determined. The effect of including a closed area on the efficiency of a marine reserve network is also investigated. Findings suggest that substrate data did not capture the biodiversity of the area and that using no data at all was equally effective. If low resolution data are all that are available then other options, such as expert opinion, or other data, such as activity use information could be used instead. Including a predefined closed area into the analysis led to an increase in area required to meet conservation goals using high resolution biotope data. It also increased the area of the reserve using the three substrate layers with no increase in protection for biotopes. This suggests that when designing networks of marine protected area sites, including current protected areas may be inefficient, resulting in larger areas being protected with no increased conservation of marine biodiversity. Policy makers must be prepared to adapt management in light of these findings and be aware of the shortcomings of the data available for use in marine conservation planning.     

How sustainable is sustainable marine spatial planning? Part I—Linking the concepts

Marine spatial planning (MSP) has emerged worldwide as a tool for sustainable ocean governance. This paper reviews how sustainability and ecosystem-based management (EBM) have been included so far within the MSP general framework, by carrying out: (1) a review on the links between sustainability, EBM and MSP in EU maritime policy initiatives; (2) an analysis on the differences between ecosystem-based MSP versus MSP focused on delivering blue growth; and (3) a discussion on how adaptive management may address some of the main challenges found in achieving sustainable ocean management. From the EU Green Paper (2006) to the MSP Directive Proposal (2013), MSP processes based on the principle of EBM have been recognized as a necessary tool to ensure maritime sustainable development. Although ecosystem-based MSP has been recently presented as the best way to ensure both ecosystem conservation and development of human activities, most national and European MSP initiatives seem to follow a MSP approach focused in delivering blue growth. A challenge, therefore, arises: how to adjust policy decisions to properly preserve ecosystems and the services they provide? If truly implemented, an adaptive approach seems to be a way forward in ensuring that spatial planning, management and policy-making in marine spaces can be continuously adjusted, thus allowing for sustainability.     

How sustainable is sustainable marine spatial planning? Part II – The Portuguese experience

With one of Europe׳s largest exclusive economic zones, Portugal has a paramount role in the implementation of EU maritime policies. In the Portuguese context, ocean planning and management are presently undergoing major advances. This paper analyzes and discusses the present state of affairs regarding the Portuguese marine spatial planning (MSP) process, comprising: (1) an update on the status of MSP in Portugal; (2) an analysis on how sustainability concepts are to be implemented in the Portuguese MSP process and (3) a discussion on major challenges to Portuguese MSP long-term sustainability. The Portuguese MSP process can be divided in two phases: development of the “Plano de Ordenamento do Espaço Marítimo” (POEM) – initially intended to be the first Portuguese “marine spatial plan” but then published as a “study”; and development of the Law Proposal 133/XII on marine planning and management – soon to be approved. A key question for the long-term adequacy of Portuguese MSP is how is it addressing environmental sustainability: is it relying on soft or hard sustainability concepts? Is it prioritizing the achievement of good environmental status (GES) or blue growth? In both cases (POEM and Law Proposal), soft sustainability seems to be the underlying principle, because although the ecosystem approach is recognized as fundamental, environmental quality seems to come second when set against economic goals.