北京水毛茛是北京市Ⅰ级保护植物,为北京市特有珍稀植物,对水质要求极高。建立自然保护区、风景名胜区等就地保护措施是一种对珍稀植物原生生境进行保护的首选方式。因此本研究以北京松山国家级自然保护区及其毗邻的玉渡山区级自然保护区作为研究区域,调查其中北京水毛茛的生长分布状况与水系水文特征、水质、水体微生物群落多样性等生态环境指标,探讨影响自然保护区内北京水毛茛分布的环境因素。结果表明,水体总有机碳含量与溪流宽度是影响自然保护区内北京水毛茛分布的主要环境因素。建议在北京水毛茛保护工作中促进底泥堆积、加强水质管理、适当增大溪流宽度,为北京水毛茛生长提供更多有机质和生存空间。该研究为自然保护区内北京水毛茛的就地保护提供了科学数据支撑,具有重要实践指导意义。

Batrachium Pekinense L.Liou is the primary protection plant and the endemic rare plant of Beijing,whose growth needs high water quality.Protection measures like establishing nature reserves and tourist attractions are the first choice to protect the native habitats of rare plants.This study chose the Beijing Songshan national nature reserve and the adjacent Yudushan regional nature reserve as research area,surveyed the growth and distribution of Batrachium Pekinense L.Liou and its habitat features including hydrological characteristics,water quality and aquatic microbial community diversity to reveal the environmental factors that affect Batrachium Pekinense L.Liou's distribution in the nature reserves.Results indicated that the content of total organic carbon and the width of streams were the key environmental factors influencing the distribution of the Batrachium Pekinense L.Liou in the nature reserves.It suggested that we should facilitate the accumulation of bed mud,enhance water quality management and properly widen streams to provide much more organic matters and living space for the Batrachium Pekinense L.Liou.Our study provided scientific data for the protection of the Batrachium Pekinense L.Liou in nature reserves,which had great practical implications.