The result of study in the paper shows that the plant can grow in tailings which have the high content of copper. Soil animal is also rich in such tailings. There is a close relationship between rehabilitation of biot...The result of study in the paper shows that the plant can grow in tailings which have the high content of copper. Soil animal is also rich in such tailings. There is a close relationship between rehabilitation of biotic community and physical and chemical property changes of tailings. With the lapse of piling time or human’s administration, the increase of stabilization,the amelioration of substrate structure, the increase of water holding and fertility keeping capacities all take place in the upper layer tailings. The higher content of humus C and total N, the more abundant soil animal’s component and number are. Acarina, Enchytraeidat, Coleoptera are the dominant groups. Acarina only comes to absolute predominance in the sample plot which is more than 40 piling years old. Enchytraeidat is widly distributed.展开更多
大型底栖动物是河湖水系生态健康的重要指示。2020年8月和11月在沿江城市铜陵市开展了典型河湖水系的大型底栖动物调查,构建了大型底栖生物完整性指数(Benthic Index of Biological Integrity,B-IBI),并进行了生态健康评估。根据铜陵市...大型底栖动物是河湖水系生态健康的重要指示。2020年8月和11月在沿江城市铜陵市开展了典型河湖水系的大型底栖动物调查,构建了大型底栖生物完整性指数(Benthic Index of Biological Integrity,B-IBI),并进行了生态健康评估。根据铜陵市河湖生态系统43个底栖动物样点(8个参照点和35个受损点)数据,对46个候选参数进行了分布范围、判别能力和相关性分析,从中筛选出总分类单元数、腹足纲单元数、Margalef丰富度指数和撕食者单元数,构成大型底栖动物生物完整性指数的核心参数,采用比值法计算各指标的分值和评价标准。评价结果表明,铜陵河湖水系的B-IBI平均得分为1.47,整体处于亚健康状态。在43个采样点中9个处于健康状态,14个处于亚健康状态,5个处于一般状态,7个处于差状态,8个处于极差状态。研究可为沿江城市河湖水系生态健康评价和河湖管理提供科学依据。展开更多
文摘The result of study in the paper shows that the plant can grow in tailings which have the high content of copper. Soil animal is also rich in such tailings. There is a close relationship between rehabilitation of biotic community and physical and chemical property changes of tailings. With the lapse of piling time or human’s administration, the increase of stabilization,the amelioration of substrate structure, the increase of water holding and fertility keeping capacities all take place in the upper layer tailings. The higher content of humus C and total N, the more abundant soil animal’s component and number are. Acarina, Enchytraeidat, Coleoptera are the dominant groups. Acarina only comes to absolute predominance in the sample plot which is more than 40 piling years old. Enchytraeidat is widly distributed.
文摘大型底栖动物是河湖水系生态健康的重要指示。2020年8月和11月在沿江城市铜陵市开展了典型河湖水系的大型底栖动物调查,构建了大型底栖生物完整性指数(Benthic Index of Biological Integrity,B-IBI),并进行了生态健康评估。根据铜陵市河湖生态系统43个底栖动物样点(8个参照点和35个受损点)数据,对46个候选参数进行了分布范围、判别能力和相关性分析,从中筛选出总分类单元数、腹足纲单元数、Margalef丰富度指数和撕食者单元数,构成大型底栖动物生物完整性指数的核心参数,采用比值法计算各指标的分值和评价标准。评价结果表明,铜陵河湖水系的B-IBI平均得分为1.47,整体处于亚健康状态。在43个采样点中9个处于健康状态,14个处于亚健康状态,5个处于一般状态,7个处于差状态,8个处于极差状态。研究可为沿江城市河湖水系生态健康评价和河湖管理提供科学依据。
