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Resistance of Plants on Sanitary Landfill in Beijing

机译:北京卫生垃圾填埋场植物的抗性

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Phytoremediation of sanitary landfills has been widely used in recent years, and the research on vegetation resistance is the essential premise. An investigation was undertaken in a sanitary landfill in Changping District of Beijing and the range of CH4 contents on the site was 165.36-1400.99 mg/(m2·h). Medicago sativa Linn, Potentilla chin-ensis Ser, Taraxacum officinale, Ixeris sonchifolia, Viola verecumda A.Gray, Ostericum sieboldii (Miq.) Nakai and Chenopodium album Linn. were investigated, their superoxide dismutase (SOD) activities, catalase (CAT) activities, proline, ascorbic acid (AA) and H2O2 contents were determined. The results showed the discrepancy of each factor for diverse plants. The reason was that each parameter had different sensitivity to oxidative stress. Results of synthetical evaluation by fuzzy membership degree method indicated that Taraxacum officinale, Potentilla chinensis Ser. and Ostericum sieboldii (Miq.) Nakai had better resistance than other plants growing on the site at that time. The contents of AA and proline of Taraxacum officinale were much higher than others, it also had higher concentration of H2O2, which caused the higher concentration of protective factors; Potentilla chinensis Ser. had highest antioxidant enzymes activities and lowest content of H2O2; the contents of most factors of Ostericum sieboldii (Miq.) Nakai were higher than those of other plants. These three plants could take precedence of all other plants to be cultivated for landfill restoration.
机译:近年来,对卫生填埋场进行植物修复已被广泛使用,而对植被的抗性研究是必不可少的前提。在北京市昌平区的一个卫生垃圾填埋场进行了调查,现场的CH4含量范围为165.36-1400.99 mg /(m2·h)。紫花苜蓿,委陵菜委陵菜,蒲公英,苦艾叶,中提琴中灰,中型骨盆和藜属画册。对它们的超氧化物歧化酶(SOD)活性,过氧化氢酶(CAT)活性,脯氨酸,抗坏血酸(AA)和H2O2含量进行了测定。结果表明,不同植物中每个因素的差异。原因是每个参数对氧化应激的敏感性不同。用模糊隶属度法综合评价的结果表明,蒲公英,委陵菜。 Nakai和Ostericum sieboldii(Miq。)Nakai的抗药性优于当时在该地点生长的其他植物。蒲公英中AA和脯氨酸的含量远高于其他,而且H2O2的浓度也较高,从而导致保护因子的浓度较高。委陵菜具有最高的抗氧化酶活性和最低的H2O2含量; Nakai Ostericum sieboldii(Miq。)Nakai的大多数因子含量均高于其他植物。这三种植物可以优先于所有其他要进行填埋场修复的植物。

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