基于Fr数分布域的河流生物栖息地量化研究  

Quantify the physical habitat in rivers based on the range of Froude number

作　　者：石瑞花[1,2] 许士国[1] 李旭光[1,2] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116024 [2]中水东北勘测设计研究有限责任公司科学研究院,长春130061

出　　处：《水力发电学报》2010年第1期142-146,125,共6页Journal of Hydroelectric Engineering

基　　金：国家重点基础研究发展计划(973)(2006CB403405);辽宁省自然科学基金资助项目(20052183)

摘　　要：以流速和水深为参数,应用水动力学模型,建立了河流生物栖息地的量化研究方法。该方法假设栖息地多样性与生物多样性之间存在必然联系,采用水流流态代表生境类型,然后利用地表水建模系统SMS建立水动力学模型求解流态从而量化栖息地,得到每种栖息地类型的数量或面积,再利用Shannon-Wiener多样性指数和饱和度指数评价栖息地的多样性并发展可供工程规划设计参考的生境分布图。以沈阳市浑河为例,对研究区建立数值模型进行模拟分析,根据模拟结果对该河段下一步的生态恢复措施提出了建议。A method is established to quantitatively study the physical habitat diversity in rivers. The method adopts a hydrodynamic model of two parameters, i.e. flow velocity and water depth, assuming that the diversity of physical habitats and organisms are closely related and that the status of physical habitat is represented by the flow regime that is simulated by using the SMS hydrodynamic model. Thus the number and area of physical habitats is calculated, the diversity of physical habitats is evaluated by using Shannon-Wiener diversity index and saturation index, and a distribution map of physical habitats may be developed. Through a case study of the Hunhe River in Shenyang city, engineering measures for restoration of habitat diversity are suggested.

关 键 词：河流治理 栖息地量化 Fr数分布域 多样性指数 浑河 

分 类 号：X17[环境科学与工程—环境科学]