[生态环境保护论文]
摘要:针对广东省咸潮上溯、水污染严重及水库、水电站建设对下游河道生态环境的影响等问题,以满足河流最基本的稀释自净功能、维持河道稳定及生物多样性为目的,综合国内外现有多种生态流量计算方法,对广东省典型河道断面的生态基流进行了计算分析。通过分析不同的方法(Tennant法、月保证率法、7Q10法、最小月平均实测径流量法)的优劣与适用性条件以及不同保证率下的计算结果,提出可以75%保证率下河道生态基流为标准,建议广东省河道生态基流量控制在诸断面多年平均径流总量的10%~21%。 关键词:河道生态流量;水文统计;空间变异性 1672-1683(2011)01-0092-04 Research on the Quantitative Analysis of Ecological Base Flow in Typical River Sections of Guangdong Province CHEN Han1,SHAO Dong-guo1,WU Jun-xiao2,WANG Qing2 (1.State Key Laboratory of Water Resources & Hydropower Engineering Science,Wuhan University,Wuhan 430072,China;2.Water Resources Department of Guangdong Province,Guangzhou 510635,China) Abstract: Aiming at environmental issues in Guangdong Province such as encroachment of salt tide,severe water contamination,negative effects of reservoirs and hydropower stations on the downstream river environment,we calculated the river ecological base flow in typical river sections of Guangdong Province by integrating existing calculation methods of ecological base flow with the purposes of satisfying the most basic river function of dilution and self-purification,as well as maintaining the river stability and biodiversity,.Based on the analysis ofthe pros and cons of different methods (Tennant method,Monthly G……
<<<<<全文未完,本文约3249个中文字,未计算英文字母、数字>>>>>
|
|