[关键词]
[摘要]
城市水循环健康评价研究对于城市的规划定位、发展建设及城市资源管理具有实际指导意义。以西安市为 例, 基于城市水循环内涵, 结合水资源关键属性, 从水生态水平、水资源丰度、水资源质量及水资源利用四个维度出 发, 筛选出 16 个指标, 构建了基于关键绩效指标( KPI) 的城市水循环健康评价体系, 对西安市2010- 2015 年水循环 健康状况进行评价。结果表明: 西安市 2010- 2015 年水循环均处于亚健康状态, 健康评价得分为 31 05~ 31 46 分, 其中 2010- 2011 年健康得分呈现下降趋势, 在 2011 年健康得分最低, 为 31 05 分, 之后 2011- 2015 年健康得分逐 年上升, 上升趋势显著; 饮用水水源地水质达标率得分最高, 2010- 2015 年均处于非常健康状态, 而人均水资源量、 亩均水资源量得分最差, 2010- 2015 年均处于严重病态; 提高水资源开发利用的合理性、缓解水资源供需矛盾是改 善西安市水循环健康状态的关键。
[Key word]
[Abstract]
Urban water cycle healt h assessment research has pr actical g uiding sig nificance for ur ban planning, develo pment and co nstr uction, and urban r eso ur ce management. Taking Xican as a study case, based on the conno tatio n of ur ban water cy cle and the key at tributes of water r eso urces, f rom the fo ur dimensions o f w ater ecolo gica l level, wat er resources abundance, w ater qualit y, and water resources utilizatio n, w e built a health assessment sy stem o f w ater cycle based o n key performance index ( KPI) w ith 16 indicato rs, and assessed the health status of w ater cycle of the city from 2010 to 2015. T he results showed t hat the w ater cy cle in Xi'an from 2010 to 2015 was in a sub- healt h state, and the health assessment score w as 31 05231 46 points. The health sco res in 201022011 showed a dow nwar d tr end. In 2011, the healt h scor e w as 31 05 points and was the low est. Af2 terwar ds fr om 2011 to 2015, the health scor e incr eased year by y ear, wit h a sig nificant upwar d tr end. T he drinking w ater so ur ce had the hig hest scor e in water quality com pliance rate, and it w as in a very healt hy state from 2010 to 2015. The per ca2 pita w ater resources and the per unit area water r esources had the w orst scores. From 2010 to 2015, they wer e all serio usly un2 healt hy . Enhancing t he r ationality of wat er resour ces utilizat ion and alleviat ing the co nt radictio n between water supply and demand w ere the key to improv ing t he health status of Xican w ater cycle
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[基金项目]
中国地质调查局地质调查项目( 12120113004800)