城市湖泊生态环境需水量计算方法研究——以东昌湖为例  

Calculation method of eco-environmental water demand of urban lake with an example of Dongchang lake in Liaocheng city of China

作　　者：许文杰[1,2] 曹升乐[3] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116024 [2]山东建筑大学理学院,济南250101 [3]山东大学土建与水利学院,济南250061

出　　处：《水力发电学报》2009年第1期102-107,共6页Journal of Hydroelectric Engineering

摘　　要：数量与质量是水资源同时具有的不可分割的两个属性,城市湖泊生态环境需水量应是城市湖泊发挥其正常功能所需具备的一定水质的水量。以东昌湖为例,结合其功能要求,将其生态环境需水量划分为以下四个组分:水体生态环境改善需水量、水体本底需水量、湖滨带绿地景观需水量和湖滨带娱乐需水量。考虑到生态环境需水量的时空特性,探讨了结合水量水质耦合研究和阈值研究的生态环境需水量计算方法。东昌湖多年平均生态环境需水量的计算结果表明,最优生态环境需水量为2922.9万m3;中等生态环境需水量为2334.7万m3;最小生态环境需水量为1746.4万m3,而且水体生态环境改善需水量和水体本底需水量两部分占全部生态环境需水量的绝大部分。计算结果可为保护其生态环境,促进其可持续利用提供依据。Quantity and quality are inseparable properties of water resources. Eco-environmental water demand of urban lake should be with certain quality which is necessary for urban lake to develop its normal functions. The calculation of eco-environmental water demand of Dongchang function demands, the eco-environmental water demand of lake is given as an example. Combining with its Dongchange lake is divided into four parts：water demand of eco-environment inprovement, background water demand, landscape water demand of greenbelt and entertainment water demand of lake littoral zone. Its spatial and temporal properties are considered. The caculation method combining with coupling study of water quantity and water quality, the threshold study are discussed. The caculation result of multiannual mean of water demands is that optimal value is 2922.9 × 10^4m^3 ;moderate value is 2334.7 × 10^4m^3; minimal value is 1746.4 × 10^4m^3. Water demand for eco-envircnment improvement and background water demand for water body occupate most of the whole water demand. The calculation result can produce the foundation for potecting eco-environment and promoting sustainable development of Dongchang Lake .

关 键 词：环境水力学 城市湖泊 生态环境需水量 水量水质耦合研究 阈值研究 东昌湖 

分 类 号：X143[环境科学与工程—环境科学]