Balancing services from built and natural assets via river basin trade-off analysis
Balancing services from built and natural assets via river basin trade-off analysis
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DOI：
10.1016/j.ecoser.2020.101144
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发表时间：
2020-10
影响因子：
7.6
通讯作者：
A. Hurford;M. McCartney;J. Harou;J. Dalton;D. M. Smith;E. Odada
中科院分区：
文献类型：
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作者：
A. Hurford;M. McCartney;J. Harou;J. Dalton;D. M. Smith;E. Odada
建成的水利基础设施会影响河流及其水流状态所提供服务的平衡。在水管理决策中应考虑对商业和生计活动的影响。用于定义强制性最低环境排放量的各种方法没有考虑到在选择生态系统和工程服务之间的平衡时必须考虑的内在的、往往是复杂的权衡和协同作用。本文展示了优化的多目标权衡分析在管理资源系统方面的价值和用途，这些资源系统提供了各种各样的、有时是相互竞争的服务。以肯尼亚塔纳河流域为例，该研究表明，可以使用多个性能指标来优化多水库系统的受控释放，这些指标代表了不同地点和不同时间段的单个供应生态系统和工程服务。这有助于更好地理解自然和建筑资产之间的相互作用，并选择适当权衡其服务的流域干预措施。我们的示范表明，优先考虑肯尼亚的法定最低环境“储备”流量会降低与洪水相关的供应服务。低总流型变化与水力发电一致性负相关，与其他供给服务正相关。
Built water infrastructure impacts the balance of services provided by a river and its flow regime. Impacts on both commercial and subsistence activities should be considered in water management decision-making. Various methods used to define mandatory minimum environmental releases do not account for the inherent and often complex trade-offs and synergies which must be considered in selecting a balance of ecosystem and engineered services. This paper demonstrates the value and use of optimised many-objective trade-off analysis for managing resource-systems providing diverse and sometimes competing services. Using Kenya’s Tana River basin as a demonstration it shows controlled releases from multi-reservoir systems can be optimised using multiple performance metrics, representing individual provisioning ecosystem and engineered services at different locations and relating to different time periods. This enables better understanding the interactions between natural and built assets, and selecting river basin interventions that appropriately trade-off their services. Our demonstration shows prioritising Kenya’s statutory minimum environmental ‘reserve’ flows degrades flood-related provisioning services. Low overall flow regime alteration correlates negatively with consistency of hydropower generation, but positively with other provisioning services.