当前位置: X-MOL 学术Environ. Dev. Sustain. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Environmental demand effects on the energy generation of Karkheh reservoir: Base and climate change conditions
Environment, Development and Sustainability ( IF 4.9 ) Pub Date : 2021-01-05 , DOI: 10.1007/s10668-020-01204-z
Elahe Fallah-Mehdipour , Omid Bozorg-Haddad , Xuefeng Chu

Reservoir is a hydraulic structure that regulates river water to supply different sectors’ demands such as municipal, agricultural, and hydropower generation. Sometimes, special attention to meet aforementioned demands causes neglect of the demand and utilities of the river itself as the first main stakeholder. Thus, determination of the environmental demand is one of the effective methods that can provide appropriate potential to achieve river utilities. In this study, two hydrology-based methods, the Tennant method and the range of variability approach (RVA), are used for assessing the environmental demand to maintain the indicators of hydrologic alteration (IHA) within their ranges of natural variations. The Karkheh reservoir was selected for supplying water for downstream demands and hydropower energy generation while considering the environmental demand under the base and climate change conditions. Results showed that the inflow of the Karkheh reservoir increased under the climate change condition, the annual average hydropower energy generated increased, and the average reliabilities of municipal, environmental, and agricultural water supplies determined by the Tennant method for RCPs 2.6, 4.5, and 8.5 increased 2, 12, and 21 percent, respectively, compared to those under the base condition. Thus, there is a good potential to allocate more water to the river as a stakeholder. In addition, the RVA with adaptation to the aquatic ecosystem under the climate change condition was used to determine the environmental demand time series for representative concentration pathways (RCPs). The results demonstrated that although the RVA effectively balanced water usage for the river, the generated hydropower energy for RCPs 2.6, 4.5, and 8.5 decreased 39, 48, and 40 percent, respectively, compare to the correspondence values by the Tennant method. According to the obtained results, the Karkheh reservoir can be operated with consideration of different stakeholders such as environmental organization, hydropower energy consumers, farmers, and drinking water consumers, even under climate change conditions which need more adaptation techniques.

中文翻译:

环境需求对 Karkheh 水库发电的影响:基础和气候变化条件

水库是调节河水以满足市政、农业和水力发电等不同部门需求的水力结构。有时,对满足上述需求的特别关注导致忽视作为第一主要利益相关者的河流本身的需求和效用。因此,环境需求的确定是能够为实现河流公用事业提供适当潜力的有效方法之一。在这项研究中,两种基于水文的方法,Tennant 方法和可变范围方法 (RVA),用于评估环境需求,以将水文改变 (IHA) 指标保持在其自然变化范围内。考虑到基地和气候变化条件下的环境需求,选择 Karkheh 水库为下游需求供水和水力发电。结果表明,气候变化条件下 Karkheh 水库的流入量增加,年平均水电发电量增加,城市、环境和农业供水的平均可靠性由 Tennant 方法确定,RCPs 2.6、4.5 和 8.5与基本条件下的相比,分别增加了 2%、12% 和 21%。因此,作为利益相关者,很有可能为河流分配更多的水。此外,使用适应气候变化条件下水生生态系统的 RVA 来确定代表性浓度路径 (RCPs) 的环境需求时间序列。结果表明,尽管 RVA 有效地平衡了河流的用水量,但与 Tennant 方法的对应值相比,RCP 2.6、4.5 和 8.5 产生的水电能量分别下降了 39%、48% 和 40%。根据获得的结果,即使在需要更多适应技术的气候变化条件下,Karkheh 水库也可以在考虑环境组织、水电能源消费者、农民和饮用水消费者等不同利益相关者的情况下运营。结果表明,尽管 RVA 有效地平衡了河流的用水量,但与 Tennant 方法的对应值相比,RCP 2.6、4.5 和 8.5 产生的水电能量分别下降了 39%、48% 和 40%。根据获得的结果,即使在需要更多适应技术的气候变化条件下,Karkheh 水库也可以在考虑环境组织、水电能源消费者、农民和饮用水消费者等不同利益相关者的情况下运营。结果表明,尽管 RVA 有效地平衡了河流的用水量,但与 Tennant 方法的对应值相比,RCP 2.6、4.5 和 8.5 产生的水电能量分别下降了 39%、48% 和 40%。根据获得的结果,即使在需要更多适应技术的气候变化条件下,Karkheh 水库也可以在考虑环境组织、水电能源消费者、农民和饮用水消费者等不同利益相关者的情况下运营。
更新日期:2021-01-05
down
wechat
bug