在山区河流的不同河段中,主导功能通常差异很大,并且受到不同的相邻土地利用的影响。基于主导功能的河流健康评估对河流管理具有重要的实用价值。为揭示北京北部山区河流不同河段的健康状况,2016年在怀九河调查了60个调查地块(河流长度38.1km),这是北京北部典型的山区河流,采用层次综合分析方法。根据人类影响的程度,淮九河可以分为六种类型,包括自然范围,接近自然的范围,人工银行工厂到达,人工银行观赏植物达到,人工河岸稀疏植物干石河段和人工河岸砌体河段。建立了基于防洪的河流健康评价指标体系,景观,水文和水质,和生态功能。采用层次分析法(AHP)确定功能层和指标层的权重。评估结果显示,健康,亚健康,轻微损坏,受损和严重受损地块占20.0%,26.7%,26.7%,占总地块的15.0%和11.6%,分别。总之,自然范围内的所有地块,人工银行植物和人工银行观赏植物要么健康,亚健康或轻微受损。人造银行砌体中的地块要么不健康,轻微损坏,损坏或严重损坏,占9.1%,27.3%,占总地块的27.3%和36.4%,分别。该研究提出了一种基于主导功能的山区河流健康评估方法,这是一种多目标方法,不仅仅基于自然河流功能。该评估方法适用于流域的社会经济发展和管理。
Dominant functions usually vary greatly in different reaches of mountainous rivers and are influenced by different adjacent land uses. Assessing river health based on dominant functions is of great practical value to river management. To reveal the health status of different reaches in Beijing\'s northern mountainous rivers, 60 investigated plots (river length 38.1 km) were surveyed in 2016 in the Huaijiu River, which is a typical mountainous river in northern Beijing, and a hierarchy-comprehensive analysis method was employed. Based on the degree of human influences, the Huaijiu River could be classified into six types, including natural reaches, near-natural reaches, artificial bank plant reaches, artificial bank ornamental plant reaches, artificial bank sparse plant dry-stone reaches and artificial bank masonry reaches. The river health assessment index system was established based on flood control, landscape, hydrology and water quality, and ecological functions. The analytic hierarchy process (AHP) was used to determine the weights of the function layer and indicator layer. The assessment results showed that healthy, subhealthy, slightly damaged, damaged and severely damaged plots accounted for 20.0%, 26.7%, 26.7%, 15.0% and 11.6% of the total plots, respectively. In summary, all plots in natural reaches, artificial bank plant reaches and artificial bank ornamental plant reaches were either healthy, subhealthy or slightly damaged. Plots in artificial bank masonry reaches were either subhealthy, slightly damaged, damaged or severely damaged, accounting for 9.1%, 27.3%, 27.3% and 36.4% of the total plots, respectively. The study proposed a method to assess mountainous river health based on dominant functions, which is a multiobjective approach and is not based solely on natural river functions. The assessment method is appropriate for the socioeconomic development and management of river basins.