沙颍河河道内最小生态需水量估算

文章采用水生物基流法、可变范围法、7Q10法、流量-水面宽关系曲线法、湿周法和生物空间最小需求法6种方法分别对沙颍河阜阳站的最小生态流量进行计算,并运用Tennant法对前6种结果进行评价,选用30.86m3/s作为沙颍河最小生态流量,是多年平均流量的23.74%,位于Tennant法计算结果的"中"范围生态需水等级,可以对河流栖息地提供很好的保护。     

Ecological Water Requirement Estimates for Typical Areas in the Huaihe Basin

Aquatic ecosystems require ecological water allocation to prevent from being damaged by natural disasters and undue exploitation. This paper discusses and estimates the ecological water requirements （EWRs） of typical areas in the Huaihe Basin to determine rational allocations of water resources and pro- mote regional improvements of the ecological environment. The main river course, including Hongze Lake and Nansi Lake, was selected as the study subject. Calculational methods for the river and lake EWRs were based on the reasonableness of the results and data availability. The monthly guarantee rate method was used to calculate monthly, flood period, non-flood period, and annual EWRs for the main river course and the main tributaries at two different guarantee rates. The minimum water level method was used to calculate annual EWRs for Hongze Lake and the upper and lower Nansi Lake of 1.521×10^9 m^3, 0.637×10^9 m^3, and 0.306×10^9 m^3. The results were used to evaluate the rationality of the quantity of water resources allocated to ecological uses in the Huaihe Basin during 1998-2003. The result shows that the present water resource allocations in the Huaihe Basin cannot satisfy the basic ecological requirements for some years, especially years with less precipitation.     

浅谈晋祠景区的园林用水

介绍了晋祠景区的水资源状况,分析了晋祠水景的艺术形式,探讨了创造园林水景的主要艺术手法。     

淮南市采煤塌陷区水域的有机物污染研究

本文通过对淮南市采煤塌陷区水域理化指标和叶绿素的测定,用较为简单的W分级法对9个监测点的水质进行评分分级,并对塌陷区水域营养化程度进行了评级,用以反映采煤塌陷区的有机物污染状况。