Soil bacterial community and metabolism showed a more sensitive response to PBAT biodegradable mulch residues than that of LDPE mulch residues
文献类型： 外文期刊
作者： Liu, Liyuan 1 ; Zou, Guoyuan 1 ; Zuo, Qiang 1 ; Li, Chuanzong 2 ; Gu, Jialin 1 ; Kang, Lingyun 1 ; Ma, Maoting 1 ; Liang, Kengyu 1 ; Liu, Dongsheng 1 ; Du, Lianfeng 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Plant Nutr, Resources & Environm, Beijing 100089, Peoples R China
2.Chinese Acad Agr Sci CAAS, Tobacco Res Inst, Qingdao, Peoples R China
关键词： Biodegradable mulch residue; Plastic mulch residue; Crop growth; Soil bacterial community; Soil metabolism
期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：14.224； 五年影响因子：12.984 ）
ISSN： 0304-3894
年卷期： 2022 年 438 卷
页码：
收录情况： SCI
摘要： Biodegradable mulch film (BDM) is considered as an environmentally sustainable alternative to low density polyethylene (LDPE) mulch film. However, the low degradation rate of BDM resulted in residues in soil after service period which were similar to LDPE mulch film. Distinguishing the differential responses of crop growth, soil bacteria and metabolism to residues of BDM and LDPE mulch films is favourable for comparing the environmental toxicities of the two materials. The results indicated that emergence rate and yield of Chinese cabbage (Brassica campestris L. ssp. chinensis Makino) were significantly inhibited by two types mulch residues. BDM residues significantly decreased bacterial diversity by 1.2-2.3% through the enrichment of dominant phyla and inhibition of inferior phyla, while LDPE mulch residues not. The effects of BDM residues on soil metabolite spectrum were stronger than LDPE mulch residues with significant increase (3.9% - 5.8%) in the abundance of total metabolites. Besides the pathways of metabolism, organismal systems, environmental information processing influenced by LDPE mulch resides, differential pathways including human diseases and cellular processes were also determined in soil with BDM residues. According to all the results of the present study, prior to thepromotion of BDM, its influences on soil safety must be carefully investigated through critical and systematic research.
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