面向生态城市的水资源供需平衡分析

Ecocity-oriented water resources supply-demand balance analysis.

提出了面向生态城市的水资源供需平衡分析原则,强调了水质水量的统一性,人与自然的和谐性,生态环境需水的优先性.在此基础上,建立了面向生态城市的水资源供需平衡分析概念框架,并对供需平衡的基本内涵进行了界定.以广州为例,进行了实证研究.结果表明,生态环境需水对供需平衡状态影响显著,2000年花都区与中心区非汛期分别缺水0.91,4.86亿m3/月;基本控制方案下,各目标年(2005,2010,2020年)全市非汛期缺水量将分别高达19.74,41.78,77.62亿m3/月;实施以污染负荷控制和节水为主导的综合强化方案才能保证供需平衡.

The principle of ecocity-oriented water resources supply-demand balance analysis is put forward, and the integrity of water quality and quantity, harmoniousness of human being and nature, and the priority of ecological environment water demand are emphasized. Based on these mentioned above, the conceptual framework of ecocity-oriented water resources supply-demand balance analysis is established and the basic intension of the balance is addressed in detail. The study for actual proving with Guangzhou as example is conducted. Eco-environmental water demand influences supply-demand balance notably; Huadu district and central region are short of water of 91 and 486 million m3/month respectively in dry season of 2000; and under the basic control scheme, there will be water shortage of 1974 million m3/month, 4187 million m3/month and 7762 million m3/month for the whole city in dry season of 2005, 2010 and 2020 respectively. In order to ensure the supply-demand balance, the integrative intensifying scheme with pollution load control and water saving as leading measures should be implemented.