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The Pioneering Role of Bryophytes in Ecological Restoration of Manganese Waste Residue Areas, Southwestern China

机译:苔藓植物在中国西南部锰废渣区生态恢复中的开拓作用

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The mining of manganese brings excellent wealth to humankind. However, it destroys the ecological environment, mainly manifested as heavy metal pollution and vegetation destruction. The restoration of ecological vegetation in manganese mining areas has become an important work after mineral exploitation. The effect of bryophytes on ecological restoration in mining areas is irreplaceable. The bryophytes diversity and its pioneering role in two types of manganese waste residue areas were investigated in Guizhou province, China. The results showed that there were 24 species of mosses in mine waste slag areas, and all of them belonged to 6 families and 15 genera; the species Gymnostomum subrigidulum , Pohlia gedeana , and Bryum atrovirens were the dominant mosses. There were 6 species of mosses in electrolytic manganese slag areas, and all of them belonged to 5 families and 5 genera. The dominant moss was B. atrovirens. The bryophytes diversity in the electrolytic manganese slag areas with lower pH was poorer than that in mine slag areas. The accumulation of heavy metals in mosses showed that B. atrovirens collected from two types of areas had a strong ability to accumulate Mn with the cumulants 5588.00? μ g/g and 4283.41? μ g/g, respectively. All mosses had a strong enrichment ability to Cd. It indicated that mosses had strong tolerance to heavy metals. Bryophytes increased the available nutrients and bacterial community diversity of mosses growth substrates in two types of areas. Besides, we studied the relationships between bacterial community structure and soil factors. The main soil factor affecting the bacterial community structure was available nitrogen (AN) in mine waste slag areas, while it was pH in the electrolytic manganese residue areas. The systematic study suggested that bryophytes increased the available nutrients and the microbial community diversity of the growth substrates in manganese waste residue areas, which provided the basic conditions for the growth of vascular plants.
机译:锰的采矿给人类带来了优秀的财富。然而,它破坏了生态环境,主要表现为重金属污染和植被破坏。矿物挖掘地区生态植被恢复已成为矿产剥削后的重要工作。苔藓植物对采矿区生态恢复的影响是不可替代的。中国贵州省研究了两种锰废渣地区的苔藓多样性及其先锋作用。结果表明,矿山废渣区有24种苔藓,所有这些都属于6个家庭和15属;物种Gymnostomum subriagulum,Pohlia Gedeana和Bryum Atrovirens是主要的苔藓。电解锰渣中有6种苔藓,所有这些都属于5个家庭和5属。占主导地位的苔藓是B. Atrovirens。 PH较低的电解锰渣区域的苔藓植物渣区域的多样性比矿井渣区域较差。苔藓中重金属的积累表明,从两种区域收集的ATrovirens具有强烈的累积MN与累积分子5588.00的能力有很强的能力? μg/ g和4283.41? μg/ g分别。所有苔藓都有强烈的富集能力。它表明苔园对重金属具有很强的耐受性。苔藓植物在两种区域中增加了苔藓生长基质的可用营养和细菌群落多样性。此外,我们研究了细菌群落结构与土壤因素之间的关系。影响细菌群落结构的主要土壤因素是矿井废渣区域的氮(AN),而在电解锰残留区是pH。系统研究表明,苔藓植物增加了锰废物区中生长底物的可用营养和微生物群落多样性,这为血管植物生长提供了基本条件。

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