Quantifying landscape externalities of renewable energy development: Implications of attribute cut-offs in choice experiments

Renewable energy is worldwide seen as a key element necessary to address climate change. However, finding socially acceptable locations for renewable energy facilities and the accompanying infrastructure increasingly often faces fierce opposition. This paper quantifies the landscape externalities of renewable energies employing a choice experiment. In addition, it is investigated how accounting for non-compensatory choice behavior, i.e. attribute cut-offs, affects welfare measures and subsequently policy recommendations. The empirical application is Germany where we conducted a nationwide survey on the development of renewable energies. We first show that cut-off elicitation questions prior to the choice experiment at least partially influence preferences. We further find that most participants state cut-off levels for attributes. Many are, however, at the same time willing to violate the self-imposed thresholds when choosing among the alternatives. To account for this effect, stated cut-offs are incorporated into a mixed logit model following the soft cut-off approach. Model results indicate substantial taste heterogeneity in preferences and in the use of cutoffs. Also, welfare estimates are substantially affected. We conclude that welfare changes from renewable energy development could be strongly underestimated when cut-offs are ignored.     

The anthropocenic imaginary: political ecologies of tourism in a geological epoch

Abstract

The Anthropocene is fundamentally a social imaginary that is both shaped by and is reshaping tourism practice. In this article, we enroll the concept of the anthropocenic imaginary to describe how the Anthropocene is symbolically and materially produced as well as the ways in which it draws on the historical separation of Humanity and Nature. As the structural roots from which the anthropocenic imaginary has grown, this binary co-produces new and old forms of political and ecological inclusion and exclusion. We demonstrate how core themes in tourism studies have fertilized the seeds from which the theoretical branches of post-humanist, capitalist and ecological imaginaries in tourism have taken shape. These anthropocenic imaginaries, we argue, are appropriated in market-based solutions to environmental degradation that emanate from neoliberal contexts internal to the problem. Thus, we question the reconciliation of capitalist accumulation and environmental limits in sustainable tourism. This article and the papers in this issue push forward emerging approaches in the political ecology of tourism that recognize the Anthropocene as both a geological epoch and conceptual regime. In doing so, the issue contributes to emerging conversations on the relationship between politics, ecology and tourism in the so-called recent age of man.     

数字地面模型新进展：TIN2.0、3D表面 塑型线和自由形态建模工具

竖向设计是人类在景观中进行的基本活动。人类对 室外空间的任何干预都涉及对地表形态的设计。在过去的几十 年中，数字设计的发展不仅改变了表现的方法，而且改变了设 计的过程。就地形建模而言，该技术实现了三维可视化和任务 自动化，例如土方计算和自动产生横截面。但在重点考察最新 的建筑信息模型(BIM)如何应用和实施这项技术时，不难发现 地形建模过程并没有充分利用技术带来的潜在优势。实际上， 三维建模工具、基于组件的建模和分析、设计验证，以及协同 设计是可以集成到数字地面模型中的。识别了现有数字建模解 决方案中的主要缺陷并为其进一步发展提供机会，提出了一 项整合性的数字地面模型建模过程，该过程引入了TIN2.0曲 面，对现有的TIN曲面进行了升级，允许在同一曲面中同时存 在规则三角网和不规则三角网，并开发了一套基于三维线和自 由形态设计工具的建模工具，推动风景园林信息模型框架的发 展以满足风景园林师及其他专业人士，如建筑师和土木工程师 进行地形建模的需求。通过案例研究对提出的建模过程进行了 测试和验证。结果表明，生成的数字曲面具有较高精度，可以 具象地表现地形，允许设计过程在三维线或自由形态设计工具 的基础上进行。所有地形建模均在三维数字模型上进行     

Comparing the spatial and temporal dynamics of urban expansion in Guangzhou and Shenzhen from 1975 to 2015: A case study of pioneer cities in China’s rapid urbanization

The distinct urbanization process of China has attracted worldwide attention because of its impressive speed, massive scale, and policy intervention. However, the interrelationship between urban expansion and government policies is still not well understood. The Pearl River Delta Urban Agglomeration of China is the first national pioneering urbanization area since the implementation of the policy “Reform and Opening-up” in the late 1970s. Here we compared the spatial and temporal patterns of urbanization in two leading cities of the Pearl River Delta (i.e., Guangzhou and Shenzhen, the provincial capital and the first Special Economic Zone of China, respectively) from 1975 to 2015, using Landsat data integrated with urban growth and landscape metrics analysis, and examined possible footprints of major economic and urbanization policies. Our results illustrated that urban land areas in both Guangzhou and Shenzhen have experienced magnificent annual growth rates at 8.1% and 11%, respectively between 1975 and 2015. On average, Shenzhen witnessed substantially higher urban growth rate than Guangzhou during the past four decades, particularly in the initial period (1978–1990) when the Reform and Opening-up policy was launched and Shenzhen was designated as the first Special Economic Zone in China in the late 1970s. However, the speed of urban expansion in Shenzhen became considerably lower than Guangzhou from 2005 to 2015, subject to physical conditions and a series of urban land use policies. Both cities showed a generally similar dynamics of urban growth forms with leapfrogging as the predominant type of urban growth at first and then edge-expansion while the contribution of infilling in Shenzhen was higher than that in Guangzhou, especially since 2005. The urbanization processes characterized by landscape and urban growth metrics revealed that a diffusion-coalescence-diffusion-coalescence process was identified for Guangzhou, while Shenzhen was generally consistent with the diffusion-coalescence urban growth hypothesis.     

采矿与环境保护治理措施

中国是一个能源消费大国,经济增长的旺盛需求使得各类矿产供不应求,丰厚的利润促进了采矿行业的迅猛发展。然而,在开发的过程中,不可避免的将产生一系列环境问题。所幸的是,矿业开发对环境的影响已逐步引起人们的重视。该文阐述了采矿给生态环境带来的负面影响,提出在采矿过程中同时进行环境保护与治理措施。     

金融生态与区域经济增长的动态关系研究

金融的稳定与发展对一个国家或者地区的经济发展起着至关重要的作用。本文从金融生态的角度,利用状态空间模型研究了区域金融发展和经济增长之间的动态关系,并指出这种动态的关系更加符合现实的经济运行状况,更加深刻地反映区域金融发展与经济增长之间的规律。     

基于科学知识图谱分析的国际园林景观史研究动态——以《园林与设计景观史(1998—2017)》杂志刊载论文为对象

以国际园林景观史学界的重要期刊《园林与设计景观史》(Studies in the History of Gardens & Designed Landscapes)为研究对象,运用VOSviewer和CiteSpace这2种科学知识图谱软件并结合传统研究方法,系统分析该期刊1998—2017年间刊载的508篇论文,揭示近20年来国际园林与设计景观史的研究动态、发展趋势、主题演进与学术脉络,为国内风景园林历史理论的研究和发展提供重要借鉴。     

西方学者对模式3知识生产的多视角理论阐释

遵循科学知识生产逻辑演进规律,在模式1和模式2知识生产发展的基础上,模式3知识生产已初见端倪。近年来,西方学界从多视角对模式3知识生产进行了理论阐释。从高等教育学视角来看,泰勒学派强调模式3知识的缄默性,巴内塔学派强调模式3知识的不确定性;从知识哲学视角来看,昆尼曼学派强调模式3知识生产的道德伦理性;从创新生态学视角来看,卡拉亚尼斯学派强调模式3知识生产的创新生态系统性;从社会生态学视角看,吉门尼兹学派强调模式3知识生产的社会生态性。     

基于产业多样性与主导性协调的产业生态化实证研究

自工业革命以来,随着经济的快速发展,环境逐渐恶化,环境与产业的重重矛盾促使了产业生态理论的诞生。通过对产业生态学概念的文献回顾,指出产业系统类似于自然生态系统,产业多样性与主导性协调是产业生态化的一个重要特征,并以徐州市1995—2009年数据实证分析了产业多样性和主导性以及两者之间的协调。结果表明：徐州主导性产业已经形成,产业多样性先下降后明显提升,但两者之间的协调度变化不大。最后提出了相应的建议。