水环境变迁与徐州城市兴衰研究

水对城市发展至关重要,严重水灾可能会酿成"城毁人亡"的悲局。历史上徐州饱受水灾之苦,特别是黄河决口南徙打乱了原本水系,使得境内水灾频仍,经济和社会发展受阻,在很大程度上导致了城市的衰落。但另一方面,沂、沭、泗以及故黄河所带来的便利灌溉条件则促进了境内古代农业生产;而运河开凿又使徐州处于全国重要的水运枢纽位置,因此带来商贸繁荣、工业发展、人口集聚和城市兴盛。本文在对历史上徐州水系变迁、尤其是水灾频发及其产生原因作出深入分析的基础上,着重探讨了境内水环境变化对徐州城市兴衰主要方面的影响。研究表明:①黄河对徐州水系变迁和城市兴衰影响巨大,直接时间持续近700年;②良好的水环境对历史上徐州境内工农业生产、商品贸易和城市建设起到了极大的推动作用,城市的繁荣兴旺与农田水利的风调雨顺、水上运输的川流不息往往处于同一个时期;③建国后徐州境内水系得到逐步治理与恢复,特别是20世纪80年代中期京杭运河(徐州段)实现全年通航后,其城市发展的水环境得到极大改善,为打造山水生态园林城市提供了良好条件。     

Gender and emergent water governance: comparative overview of neoliberalized natures and gender dimensions of privatization,devolution and marketization

This article provides a critical reading of some of the gendered dimensions of emergent water governance regimes, specifically those related to the privatization, marketization and devolution of water resources management. After first providing an overview of recent nature–society contributions related to neoliberalization processes, the article comparatively evaluates insights with respect to the gender dimensions of recent shifts in water governance. I make several arguments at the intersection of relevant literatures. First, there is a need for gender theorists interested in water resources and nature–society debates to engage more with issues, theories and processes associated with neoliberalization. Second, there is a need for more attention to gender, feminist theory and approaches to inequality and socio-spatial difference in discussions of neoliberalized natures. Third, reading these literatures together reveals that there is a need to be self-reflexive and critical of elements of the gender and water literature that implicitly endorse foundational elements of the neoliberal turn in resource governance. Finally, there are particularities with respect to gender theory and politics, and water materialities that hold importance for understanding recent water governance shifts in the broader context of political and economic changes associated with neoliberalization.     

潮湿土遗址隔水防潮技术对比研究

潮湿土遗址的破坏,很大程度上是受水的影响,目前国内几个潮湿土遗址经常使用的防水隔水措施主要有:挡水墙、隔水廊道、拱券法和抽水法。经过对几种方法进行总结评价,可看出拱券法是最有效的方法。     

Rainwater Tank Households: Water Savers or Water Users?

This paper provides the first published post‐installation analysis of retrofitted rainwater tanks and their effects on mains water consumption. The study aimed to determine the average mains water reductions achieved in households with recently installed rainwater tanks and compare this figure with wider community consumption. The social and cultural impacts of rainwater tank ownership were also explored to understand how rainwater is used and perceived. The results show that during the period of analysis, the drought years of 2005–2007, 7125 or 8% of Illawarra households installed a tank. Comparison of mains water consumption for two years before and after installation shows that rainwater tank households reduced their mains water consumption about the same amount (10.26%) as the wider community (10.8%). The social and cultural components reveal three main groups of households. The largest group, water users, had a desire for water autonomy and independence to continue previously enjoyed water practices that had been restricted. Among a light green group, tanks were part of a package of overtly pro‐environmental behaviours that did not necessarily change consumption patterns. A frugal group, many of whom had been raised in rural areas, were the main water savers. Perception of tank water quality was shown to be an influential determinant of how rainwater was used, particularly for connections internal to the house. This study shows that rainwater tanks have the potential to achieve significant water savings, but if water‐intensive behaviours are not modified, and rainwater tanks are not plumbed indoors, the potential of this alternative water source will not be met. Currently, rainwater tanks facilitate water users as much as water savers.     

Obsidian hydration dating by infrared spectroscopy: method and calibration

Low temperature (90–190 °C) hydrothermal experiments have been conducted on seven obsidians where composition of the glass varies significantly in the concentration of structural water within the unhydrated bulk material. Infrared transmission spectroscopy was used to track the diffusion of molecular water into the glass surface as a function of time and temperature. Long-term (60–360 days) hydration sequences at 90 °C show a t^0.6 time dependence for the mass uptake of molecular water that forms the hydration layer. The structural water concentration of the unhydrated bulk obsidian is highly correlated with the pre-exponential and activation energy and may be used to estimate the Arrhenius constants. In addition, secondary ion mass spectrometry (SIMS) hydrogen profiling of Napa Glass Mountain obsidian hydrated at 90 °C reveals that the early stages of diffusion exhibit a dynamic behavior that includes a fluctuating hydrogen concentration and a changing diffusion coefficient that slows with time.     

The Role of Cross‐Scale Institutional Linkages in Common Pool Resource Management: Assessing Interstate River Compacts*

This article extends the Institutional Analysis and Development Framework's seminal research on common pool resource (CPR) management in new directions by exploring how the design principles of robust and enduring CPR management, initially proposed by Elinor Ostrom in 1990, can be used to measure and assess cross‐scale institutional linkages. This study examines data from 14 interstate river basin compacts in the western United States to identify the types of linkages established in these interstate settings, the factors that contribute to the emergence of diverse types of linkages around these shared resources, and how different types of linkages perform. Using Ostrom's CPR design principles to operationalize and measure linkages, the study shows that diverse types of cross‐scale linkages were created under the 14 interstate compacts, with linkages related to monitoring found to be particularly prevalent. The types and diversity of linkages can largely be explained by the conditions under which compacts emerged and the water management issues states jointly face. In applying the evaluative criteria operationalized by the CPR design principles, this research further shows that the monitoring and collective choice linkages created by compacts tend to be of higher quality, while enforcement and conflict resolution linkages appeared to be of the lowest quality. In addition to developing the IAD literature on CPR management, these findings offer critical insights for assessing the capacity of interstate river basin compacts in the western United States to manage shared resources successfully, as well as insights for what types of institutional investments may be needed for enhanced resource governance.     

Photovoice Evaluated: An Appropriate Visual Methodology for Aboriginal Water Resource Research

Methodologies in human geography are rapidly evolving to include participatory approaches that incorporate other voices and knowledges. Central to these participatory methodologies is the co‐evolution of research objectives, the co‐production of knowledge, joint learning, and capacity building of all those involved. Visual methodologies that use the media of photography are gaining recognition as powerful participatory methods. In this paper, we evaluate whether photovoice is a culturally appropriate and engaging visual methodology, and consider how it can be improved to better facilitate research between non‐Aboriginal researchers and Aboriginal Australians involved in water resource management. We draw from two photovoice projects conducted in partnership with two separate Aboriginal groups in northern Australia. Photovoice methodology in this context was found to be both culturally appropriate and engaging. It facilitated genuine participatory research, empowered participants, and was easily adapted to the field situation. The methodology proved to be a powerful tool that revealed in‐depth information including Aboriginal values, knowledge, concerns, and aspirations for water resource management that may not have been captured through other participatory approaches. Photovoice methodology could be enhanced with a more defined role for the researcher as knowledge broker and as translator and communicator of research outcomes (as deemed appropriate by research participants) to policy makers.     

The 2012 acid mine drainage (AMD) crisis in Carolina's municipal water supply

ABSTRACT

There are growing concerns in South Africa about the threat that acid mine drainage (AMD) poses to local natural water resources in many of the country's mining areas. Since the beginning of the 21^st century, the toxic water has been responsible for pollution in parts of the country. Government and operators in the country's water sector have actively been working in recent years at addressing the problem. This article deals with a contemporary history of an AMD crisis in the coalmining town of Carolina, in the Mpumalanga Province of South Africa, and explains how the matter was eventually resolved. The discourse focuses on how people of Carolina responded to the contamination of the municipality's water supply system and eventually chose to follow the path of active protest. The water crisis even made a detour to the high court, with a number of non-governmental organisations (NGOs) actively supporting the cause of local residents. Although by September 2012 the town's water supply was restored, the community remained distrustful of the local authority's ability to secure a consistent supply of good quality water. The authorities took some measures to restore trust. People had been traumatised and sound relations had to be restored in the aftermath of the crisis. The Carolina crisis of 2012 is contemplated from the perspective of the current threat that AMD poses to South Africa's finite water resources and the danger of mining in sensitive areas.     

16世纪至20世纪60年代滇池沿岸的 低田与深水稻种植

明清以降,滇池在岁修制度下常年疏浚海口,水域范围基本稳定,但受季风气候影响,其水位存在明显季节性变化,夏秋上涨,冬春下降,主要表现为沿岸低田在雨季即周期性被湖水淹没的特点。随着滇池流域坝田开发趋于饱和,滇池沿岸低田的深水稻“水涨谷”,在明清之际逐步系统种植,实现滨湖低田稻作与滇池水位季节性变化的生态耦合。这种局面到20世纪60年代末彻底改变,入滇河道上游大小水库的修建,使滨湖低田逐渐干田化,水涨谷生长的水域环境发生变化。观察滇池水域环境与稻作生态互动的关系,发现当区域环境呈现出长时段的规律性变化,就可能变“害”为“利”,这是人与自然相处中适应并利用自然的智慧展现。