土地质量档案建立方法研究

本文基于浙江省基本农田质量调查试点工作成果,尝试建立了土地质量档案。土地质量档案是在土地质量的调查和评价过程中形成的具有保存、利用价值的资料,是土地质量调查成果的真实记录,其内容涵盖土地基本信息、土地质量信息和开发利用建议等,在表现形式上可分为土地综合质量档案、富硒土地质量档案和污染土地档案等三种类型。建立土地质量档案,对浙江省乃至全国土地资源的全面管护具有积极意义。     

MUSLIMS,HINDUS, AND SIKHS IN THE NEW RELIGIOUS LANDSCAPE OF ENGLAND*

ABSTRACT. This article examines the dramatic changes brought to English townscapes by Islam, Hinduism, and Sikhism. These “new” religions have arrived with the large‐scale immigration and subsequent natural growth of the minority ethnic populations of Great Britain since the 1950s. The article traces the growth and distribution of these populations and religions, as well as the development of their places of worship from front‐room prayer rooms to cathedral‐scale buildings. It explores the way in which the British planning process, dedicated to preserving the traditional, has engaged with the exotic.     

Uncertainties in global warming science and near-term emission policies

Abstract

It is argued here that stringent, early emission reductions are necessary in order to minimize ‘dangerous anthropogenic interference in the climate system’ (DAI), the stated Objective of Article 2 of the UNFCCC (United Nations Framework Convention on Climate Change). Given probability distribution functions (pdfs) for climate sensitivity and the temperature threshold for harm consistent with currently available evidence, and accepting a 10% risk of unacceptable damage as the threshold for ‘danger’, it is not possible to avoid DAI. Having adopted a precautionary approach in setting emission trajectories, the possibility arises that future resolution of uncertainties concerning climate sensitivity and the harm threshold may show the climate sensitivity to be low (1–2 K) and the harm threshold high (2 K rather than 1 K). Using a simple coupled climate-carbon cycle model, it is shown that if the climate sensitivity were to be definitively determined to be 2 K in 2020, then the emission reductions achieved by that time and planned for the next two decades are still fully needed. Only if climate sensitivity is very low (1 K) and the harm threshold is high (2 K) would the emissions achieved by 2020 not have been fully necessary. However, this would still lead to changes in ocean chemistry that are likely to be highly detrimental to marine life. Thus, when the full spectrum of impacts is considered, there is no plausible set of assumptions under which stringent near-term emission reductions are rendered unnecessary.     

Constraining and enabling factors to using long-term climate information in decision-making

We carry out a structured review of the peer-reviewed literature to assess the factors that constrain and enable the uptake of long-term climate information in a wide range of sectoral investment and planning decisions. Common applications of long-term climate information are shown to relate to urban planning and infrastructure, as well as flood and coastal management. Analysis of the identified literature highlights five categories of constraints: disconnection between users and producers of climate information, limitations of climate information, financial and technical constraints, political economy and institutional constraints and finally psycho-social constraints. Five categories of enablers to the uptake of long-term climate information in decision-making are also identified: collaboration and bridge work, increased accessibility of climate information, improvement in the underlying science, institutional reform and windows of opportunity for building trust.

Policy relevance

Our review suggests that stand-alone interventions aimed at promoting the uptake of climate information into decision-making are unlikely to succeed without genuine and sustained relationships between producers and users. We also highlight that not every decision requires consideration of long-term climate information for successful outcomes to be achieved. This is particularly the case in the context of developing countries, where the immediacy of development challenges means that decision makers often prioritize short-term interventions. Care should therefore be taken to ensure that information is targeted towards investments and planning decisions that are relevant to longer-term timescales.     

Planning adaptation based on local actors’ knowledge and participation: a climate governance experiment

Involving a wide-range of stakeholders at different moments in the planning of urban adaptation to climate change can help to overcome different barriers to adaptation, such as a lack of common perception, or control over options. This Article argues for an approach that involves a wide range of actors throughout the planning process in order to confront the challenges of urban adaptation to climate change. It builds on the results of a three-year participatory action research project to identify the catalysts with which local administrations can overcome the lack of data, the low level of engagement around the climate issue, and the cause-and-effect linkages of climate change impacts on the urban environment. Significant factors include territorial rootedness, leveraging actors’ experience, interaction between actors, as well as the valuing of local actors as experts of territorial management rather than as novices with regard to climate change adaptation. In addition to contributing towards the engagement of a large number of stakeholders around adaptation issues, a planning process that involves representatives from various sectors and during several stages contributes to a greater understanding of these issues and their linkages. It follows that such a process will bring changes to urban practices by better articulating local concerns about climatic issues.

Policy relevance

Although participation is commonly advocated in policy responses to climate change, only few empirical studies have investigated the ways in which local actors' knowledge can be integrated into climate change adaptation planning processes. The article builds on the results of an action research project carried out in Québec City, Canada, to address the relevance of involving a progressively broader range of actors as the adaptation process moves through its various phases. Given that a multitude of barriers to adaptation are at play at different times in a municipality, collaborations between local stakeholders emerge as a key factor. These collaborations provide greater insight into the linkages between climate change impacts and the urban environment and, in doing so, bring into question ordinary urban management and design practices.     

Municipal emissions trading: reducing transport emissions through cap-and-trade

A novel approach is described for limiting transport emissions through a cap-and-trade emissions trading scheme, whereby local governments would be the participants of emissions trading. It is proposed that emissions trading for passenger road transport has the effect of channelling the carbon costs away from fuel prices to land use costs. A ‘municipal emissions trading scheme’ could achieve this—local governments would have to cover vehicle traffic emissions generated by homes, businesses and industry on their territory. Municipalities are able to participate in an emissions trading scheme because they have planning control over development on their territory, and could control the amount of future vehicular traffic. Through planning, municipalities have access to a wide range of strategies to minimize transport emissions. Municipal emissions can be calculated as a share of total national road transport emissions with the help of a gravity model of traffic attraction. A municipal emissions trading system would result in capping and controlling passenger road transport emissions, not through raising fuel prices or importing credits, but by enforcing prudent and climate-efficient urban planning practices.     

结合杨浦知识创新城区规划大力推进浅层地热能开发利用

浅层地热能的开发利用对实现节能减排、建设国家创新型城区具有重要的战略意义。本文结合杨浦区规划编制情况,对杨浦区浅层地热能开发利用的历史、总体条件及探索实践进行了概述分析,并提出了完善浅层地热能开发利用政策机制的具体建议。     

阿伯克隆比与英国早期区域规划

论文介绍了英国区域规划先行者阿伯克隆比的生平及主要学术思想和实践,对英国早期区域规划"伦敦郡规划"、"大伦敦规划"进行了总结梳理,提出"大伦敦规划"的缺陷,并提出英国新城思想和区域规划理论受到了中国传统哲学思想(风水地理学)的影响。     

上海市松江区节约集约利用土地管理实践

土地是不可再生资源,近20年经济快速发展使松江的可利用土地日趋紧缺,调整产业结构、转变发展方式极为重要和紧迫。在加快推进工业化、城镇化和新农村建设的形势下,大力推进节约集约用地,是保护土地资源、提高土地利用效率和效益、促进产业结构转型升级和转变经济发展方式的必然选择。     

Mapping beach morphodynamics remotely: A novel application tested on South African sandy shores

Sandy beaches have been identified as threatened ecosystems but despite the need to conserve them, they have been generally overlooked. Systematic conservation planning (SCP) has emerged as an efficient method of selecting areas for conservation priority. However, SCP analyses require digital shapefiles of habitat and species diversity. Mapping these attributes for beaches from field data can take years and requires exhaustive resources. This study thus sought to derive a methodology to classify and map beach morphodynamic types from satellite imagery. Since beach morphodynamics is a strong predictor of macrofauna diversity, they could be considered a good surrogate for mapping beach biodiversity. A dataset was generated for 45 microtidal beaches (of known morphodynamic type) by measuring or coding for several physical characteristics from imagery acquired from Google Earth. Conditional inference trees revealed beach width to be the only factor that significantly predicted beach morphodynamic type, giving four categories: dissipative, dissipative-intermediate, intermediate and reflective. The derived model was tested by using it to predict the morphodynamic type of 28 other beaches of known classification. Model performance was good (75% prediction accuracy) but misclassifications occurred at the three breaks between the four categories. For beaches around these breaks, consideration of surf zone characteristics in addition to beach width ameliorated the misclassifications. The final methodology yielded a 93% prediction accuracy of beach morphodynamic type. Overlaying other considerations on this classification scheme could provide additional value to the layer, such that it also describes species’ spatial patterns. These could include: biogeographic regions, estuarine versus sandy beaches and short versus long beaches. The classification scheme was applied to the South African shoreline as a case study. The distribution of the beach morphodynamic types was partly influenced by geography. Most of the long, dissipative beaches are found along the west coast of the country, the south coast beaches are mostly dissipative-intermediate, and the east coast beaches range from short, estuarine pocket and embayed beaches in the former Transkei (south east), to longer intermediate and reflective beaches in KwaZulu-Natal (in the north east). Once combined with the three biogeographic regions, and distinguishing between estuarine and sandy shores, the South African coast comprised 24 different beach types. Representing shorelines in this form opens up potential for numerous spatial analyses that can not only further our understanding of sandy beach ecology at large spatial scales but also aid in deriving conservation strategies for this threatened ecosystem.