Hao Li-Xia, Sun Ran-Hao, Chen Li-Ding
Huan Jing Ke Xue. 2014 Oct;35(10):3692-701.
With the development of economy, the health of river ecosystem is severely threatened because of the increasing effects of human activities on river ecosystem. In this paper, the authors assessed the river ecosystem health in aspects of chemical integrity and biological integrity, using the criterion in water quality, nutrient, and benthic macroinvertebrates of 73 samples in Haihe River Basin. The research showed that the health condition of river ecosystem in Haihe River Basin was bad overall since the health situation of 72. 6% of the samples was "extremely bad". At the same time, the health situation in Haihe River Basin exhibited obvious regional gathering effect. We also found that the river water quality was closely related to human activities, and the eutrophication trend of water body was evident in Haihe River Basin. The biodiversity of the benthic animal was low and lack of clean species in the basin. The indicators such as ammonia nitrogen, total nitrogen and total phosphorus were the key factors that affected the river ecosystem health in Haihe River Basin, so the government should start to curb the deterioration of river ecosystem health by controlling these nutrients indicators. For river ecosystem health assessment, the multi-factors comprehensive evaluation method was superior to single-factor method.
随着经济的发展，由于人类活动对河流生态系统的影响日益增加，河流生态系统的健康受到严重威胁。本文作者从化学完整性和生物完整性方面，采用水质、营养物质以及海河流域73个样本的底栖大型无脊椎动物的标准，对河流生态系统健康状况进行了评估。研究表明，海河流域河流生态系统的健康状况总体较差，因为72.6%的样本健康状况为“极差”。同时，海河流域的健康状况呈现出明显的区域聚集效应。我们还发现，河流水质与人类活动密切相关，海河流域水体富营养化趋势明显。流域内底栖动物的生物多样性较低，且缺乏清洁物种。氨氮、总氮和总磷等指标是影响海河流域河流生态系统健康的关键因素，因此政府应通过控制这些营养指标来遏制河流生态系统健康状况的恶化。对于河流生态系统健康评估，多因素综合评价方法优于单因素方法。
