Call for papers for a special volume of the Journal of Cleaner Production: How to find the clean and sustainable hydropower? –A Special Issue on hydropower’s effects, assessment, Low Impact Development (LID) and sustainable management
• 大类 : 环境科学与生态学 - 1区
• 小类 : 工程：环境 - 2区
• 小类 : 环境科学 - 2区
Hydropower is considered an environmental friendly source of energy which, unlike, for instance, conventional thermal power, does not release polluting emissions or toxic by-products. Hydropower is technologically mature, economically viable and operationally flexible, and has provided significant positive impacts on human economies and well-being, although also some negative aspects were reported in scientific and environmental literature. According toBP (2015), hydropower has grown steadily, and in 2014 it was exploited in about 150 countries, corresponding to 38.9% of the global electricity output. Hydropower performances have received relatively less attention in recent years compared to other non-fossil energy technologies, such as wind, nuclear and solar power. Therefore, given its large implementation worldwide, it is imperative to investigate the costs and benefits of this form of energy, in order to promote advantages and technological improvements and limit environmental impacts.
As mentioned above, hydropower benefits (e.g. power generation, flood control, navigation), are sometimes associated to a number of non-negligible environmental problems. Air pollutant emissions usually take place during the hydropower generation (Mehmet Berkun 2010) which calls for a deeper understanding of the mechanism of such release for possible prevention or reduction. Reservoirs creation by hydropower will increase greenhouse gas emission by the decomposition of flooded organic matters. Moreover,constructionof dams is sometimes responsible of landscape alterations (e.g., structure, dynamics, temperature, water composition, sediments in wetlands, rivers, lakes, bogs). Furthermore, also as a consequence of these landscape alterations, the comprehensive and long-term effects of dam construction and operation on biodiversity around the world are still most often unknown.
Additionally, the deterioration of dams over time is a crucial problem for the water reservoir originated by the dam construction. The environmentally-related problems associated to the dam-reservoir system in thelong term(>50 years) is still not well-known, though the short and medium term aspects (Kyle E.Juracek, 2014). This problem should get more attention with the challenge of global warming. The newly releasedIPCC report of Global Warmingof 1.5 °C at COP24 in Poland has estimated rise in earth’s average temperature to exceed 1.5 °C by 2030 (IPCC, 2018); while a great number of existing dams have been affected by deterioration problems, most often due to extreme natural phenomena linked to climate change (Bouzelha et al., 2012). Therefore, decision-makers and managers have to face new problems in the management of these systems, with ageing and climate becoming a deterioration factor (Pittock and Hartmann, 2011). The potential risk associated to these systems, especially in the presence of increasing population in downstream areas, cannot be disregarded and calls for technological solutions and financial investments.
The joint operation of cascade reservoirs can generate various compensation benefits, compared to single reservoir implementation. How to scientifically and fairly assess all these compensation benefits, and how to share these benefits reasonably, will be of great importance for the sustainable development of the entire basin and the appropriate cascade reservoir management of a hydropower station. The issue of reservoir compensation benefits does not limit to purely energetic consideration and technologies, but also involves trade-offs from social, economic, and environmental points of view.
A numerical number of papers have been published on JCLP associated with above-mentioned topics (hydropower’s effects, assessment, joint reservoirs and aging dams, etc.). Especially,a clear increase of publications about hydropower on JCLP has presented since last 5 years (Supp. 1). This trend indicates the importance of a clean and sustainable hydropower for the future development. However, despite of numerous papers regarding hydropower on JCLP, no special issue has been published to systematically discuss hydropower’s effects and its sustainability improvement.
Therefore, motivated by the critical significance of understanding the comprehensive effects and sustainable management needs of hydropower stations, this special issue of JCLP aims to systematically review past works on hydropower’s effects and discuss potential impacts on newly proposed topics (e.g. interactive effects between climate change and aging dam). More specifically, this issue expects to assess the economic sustainability, the energy efficiency and effectiveness, and the environmental and ecological impacts of hydropower systems, and seeks effective ways for their sustainable management in support to economic, environmental, ecological and social aspects of landscape and energy policy-making associated to hydropower.
Theme 1:Comprehensive effects of hydropower systems
Comprehensive understanding of hydropower’s ecological effects is critical for hydro-sustainability. Recent years, a great number of papers discussing dam effects have been published on JCLP. Topics cover the impact on biodiversity (Wu et al., 2019), water footprint (Li et al., 2017), carbon emission (Bakken et al., 2016; Zhang and Xu 2016) etc. Theme 1 is proposed to assess/review the hydropower effects from a systematical point view. Topics of interests in this field are included but not limited to:
Reviews on hydropower effects
Influence of hydropower dams on local hydrological cycle (precipitation, flux volume, evaporation etc.)
Geomorphology evolution of dam regulated rivers
Life cycle of nutrients and pollutants release in dam systems
Combined or long-term influences of dam construction on biodiversity
Society and economy impacts of hydropower and dam systems
Theme2:Influence assessment of hydropower systems
More extreme events (e.g. storm, flooding, drought) by climate change affect dam age and the resultant social, economic and ecological impact (Zamarrón-Mieza et al., 2017). An integrated assessment on multiple sides is essential for the future management of hydropower. This assessment should cover climate change, social and environmental impact, age and scales of dams, as well as mutual effects of above mentioned multi-sides. Topics of interests in this field are included but not limited to:
Integrated environmental assessment of hydropower stations
life cycle assessment (LCA) of hydropower systems
Climate change and dam ageing
Trade-off between hydropower economic benefits and undesirable environmental and social impacts
Risk assessment of dam ageing
Theme3:Low Impact Development (LID) of hydropower
Low impact criteria of hydropower address eight key areas such as ecological flow regimes, water quality, fish passage protection etc. Some of these issues have developed mature strategies such as building fish passage to improve aquatic ecology (Katopodis et al., 2019; Carl R. Schilt 2007); while some still remains in question. With rising realization on ecological impact of hydropower, this theme aims to seek for new solutions by exploring new techniques and operations on hydropower. Topics of interests in this field are included but not limited to:
Hydroelectric resource and evaluation of low impact systems
Ecologicaldam construction (design, materials and technology)
Hydropeaking mitigation methods
Theme4:Sustainable management of hydropower
Hydropower could cause serious environmental and ecological problems than expected if no cares on proper construction, operation or maintenance. Key solution comes to the improved management on hydropower sustainability (Voegeli et al., 2019). Operation on single dam, aging dam (Liu et al., 2013) and possible compensations have been studied while sustainable management should be more deeply discussed, for instance on joint dams. Topics of interests in this field are included but not limited to:
Optimal operationmethod of reservoir
Joint operation of cascade reservoirs
Sustainable management of ageing-dam systems
Perspectives for sustainable hydropower development