Water sustainability under climate change and increasing demand: a one water approach at a watershed scale

气候变化和不断增长的需求下的水可持续性：流域范围内的单一水方法

• 批准号: 356896-2007
• 负责人: Wei, Xiaohua(Adam)
• 金额: $ 7.28万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects Supplemental Competition
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=366425
• 关键词: Water; sustainability; under; climate; change

Water will become Canada's foremost ecological crisis early in this century (Schindler 2001). A watershed based approach for water management is repeatedly suggested to address water sustainability issues. However, full implementation of such an approach is seldom realized. Achieving a full understanding of total water resources (climate, surface water, shallow and deep groundwater etc.) and their interactions at a watershed scale is a major barrier. We propose to take a one-water perspective to evaluate watershed sustainability under climate change and increasing socio-economic drivers of water demands (agriculture and population) in the Deep Creek watershed (306 km2) located in the Okanagan basin of the semi-arid southern interior of British Columbia. The suitable watershed size and significant water conflicts among water users make this watershedan ideal place for this interdisciplinary research.  A combination of geo-chemistry and integrated watershed modelling (MIKE SHE or others) will be used to quantify the total water resource, surface water - groundwater connections and the watershed response to various water stressors. A Canadian Land Surface Scheme (CLASS) model will be used to improve estimationof spatially varied groundwater recharge for model calibration. In addition, future agriculture water demands will be projected using both environmental and economic drivers (changes in product prices, climate, water pricing policies, and water use regulations) rather than based on simpler trend projections. This study is novel in its quantitative integration of the physical and human dimensions of water use at a watershed scale, enabling adaptive management responses to climate change and increasing demand impacts.

水将成为本世纪初加拿大最重要的生态危机（Schindler 2001），人们多次建议采用基于流域的水管理方法来解决水的可持续性问题，但这种方法很少得到全面实施。水资源（气候、地表水、浅层和深层地下水等）及其在流域范围内的相互作用是一个主要障碍，我们建议采用单一水的视角来评估气候变化和日益增加的社会经济驱动因素下的流域可持续性。位于不列颠哥伦比亚省半干旱南部内陆奥肯那根盆地的 Deep Creek 流域（306 平方公里）的用水需求（农业和人口） 合适的流域规模和用水者之间的严重用水冲突使该流域成为理想的场所。跨学科研究。地球化学和综合流域建模（MIKE SHE 或其他）的结合将用于量化总水资源、地表水-地下水连接以及流域对各种水压力源的响应。加拿大陆地表面方案（CLASS）模型将用于改进对空间变化地下水补给的估计，以进行模型校准。此外，将利用环境和经济驱动因素（产品价格、气候、水定价政策的变化）来预测未来的农业用水需求。这项研究的新颖之处在于它对流域范围内用水的物理和人类维度进行了定量整合，从而能够对气候变化和日益增加的需求影响做出适应性管理。