【摘要】 概述国外水生态区评价研究成果:目前水生态区正确性评价方法主要以复合生物群落指标体系为主,考察水生态区之间的一致性和差异性;不同方法、不同尺度的水生态分区结果之间的相互校验也是水生态区正确性评价的一种辅助方法;水生态区边界准确性评价和特定应用方面有效性评价也渐渐得到了人们的关注。提出我国开展水生态分区及其评价研究过程中值得注意的几个问题:在选择水生态分区方法时,应将定性和定量的方法有机地结合起来,使其相互弥补,从而更准确地对我国流域水体进行水生态分区;在选择分区指标时,应综合考虑水生态系统的各方面特征指标及影响因素,结合生物量、物种组成比例、物种数等生物指标和河床类型、河道形态、水化学等非生物指标,全面地反映水生态区的特征;在借鉴国外相关研究成果的同时,评价方法的科学性、评价指标的综合性与针对性、评价对象的异质性等也是值得注意的问题。更多还原

【Abstract】 Study results from aquatic ecoregions abroad were summarized.The assessment method was inspection of the consistency and diversity between aquatic ecoregions using mainly the complex biological community indicator system at present.Using mutual examination of the results of dividing aquatic ecoregions with different methods and different dimensions was an effective supplementary assessment method.The method of assessing the accuracy of the aquatic ecoregions boundary and assessing the effectiveness of specific applications has gradually received more attention.Several problems worth concern in the study of aquatic ecoregions and their assessment are put forward.The qualitative and quantitative methods should be combined organically in selecting the method for dividing aquatic ecoregions so that they can mutually benefit each other and more precisely divide aquatic ecoregions of river basins in China.In selecting dividing indexes,the various characteristic indexes and factors of aquatic ecosystems should be considered,combining bio-indexes(such as biomass,composition ratio of species, and number of species) with non bio-indexes(such as river bed types,river patterns,and hydro-chemistries) in order to fully reflect the features of the aquatic ecoregions.The scientific validity of the assessment method,comprehensiveness and direction of assessment indexes,and heterogeneity of assessment objects are also noteworthy problems.更多还原