【作者】 刘海平； 郭传波； 叶少文； LEK Sovan； 李钟杰；

【Author】 LIU Haiping;GUO Chuanbo;YE Shaowen;LEK Sovan;LI Zhongjie;Institute of Fisheries Science, Tibet Academy of Agricultural and Animal Husbandry Sciences;State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences;

【机构】 西藏自治区农牧科学院水产科学研究所； 中国科学院水生生物研究所淡水生态与生物技术国家重点实验室；

【摘要】 人类干扰对西藏尼洋河生态系统的健康评估。群落多样性取决于总丰度是否达到环境容量,尼洋河某一水生生物群落总丰度适中时,才可能达到高的多样。在受到多布水电站建设的影响,尼洋河下游(库下区)和上游(库上区)水体相关离子特征差异显著。在人类活动干扰的过程中,季节之间的差异变的更为显著,丰水期、平水期和枯水期的水生态系统差异明显,比较而言,枯水期生产力较高,系统更为稳定,沿程方面,下游较上游,生态系统更为优越。值得注意的是,在人类活动干扰之前,水生生物群落多样性较高,水体质量参数和水体相关离子方面,表现为适中的数值,水生态系统主要表现为适中的生产力,生态系统较为稳定和健康。更多还原

【Abstract】 Integrated ecosystem health assessment. Generally, total abundance of five aquatic organism communities in downstream were higher than that in upstream, in addition, community diversity was dependent on the total abundance who was reach to its environment tolerance or not. To some extend, valley of Niyang River possessed high chemical energy stored in biomass, more information embodied in genes, and high ability to utilize available resources, the similarity also goes to dry season. Globally, before the construction of Duobu Hydropower Station and Lhasa-Nyingchi highway, hydro-ecology of Niyang River mainly displayed relatively medium productive and stable, together with healthy hydro-ecology compared with that of during construction. Meanwhile, obvious difference of hydro-ecology also continued with the anthropogenic activities interfered as for water quality indices and water iron related factors. Nevertheless, no significant difference existed before or during anthropogenic activities interfered as for eco-exergy indicators and aquatic communities diversity indices.更多还原