首页|鸡粪生物炭施用影响聚乳酸微塑料污染的酸性土壤质量

鸡粪生物炭施用影响聚乳酸微塑料污染的酸性土壤质量

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  • 国家科技期刊平台
  • NETL
  • NSTL
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为研究生物炭对可生物降解塑料污染土壤理化性质的影响，以聚乳酸微塑料(PLA-MPs)为研究对象，开展半年的土壤培养实验，分析施用鸡粪生物炭对PLA-MPs污染的酸性土壤质量的影响。结果表明:PLA-MPs污染导致土壤pH升高，造成氮、磷、钾等养分流失，影响土壤碳周转;施用鸡粪生物炭使PLA-MPs污染的酸性土壤变成碱性，脲酶和转化酶活性有不同程度的上调，培养结束时，土壤有效磷和速效钾分别提高61。08%和6。10倍，无机氮锐减64。31%;PLA-MPs和生物炭协同作用下，土壤净全碳变化量与PLA-MPs污染土壤的净碳变化量呈极显著正相关。研究表明，生物炭的施用可减缓PLA-MPs污染造成的磷和钾养分流失，生物炭和PLA-MPs协同影响土壤全碳周转和氮转化。
Effects of chicken-manure biochar application on the soil quality of polylactic acid microplastic-contaminated acidic soil
Recently,biodegradable plastics were proposed to solve the issue of microplastic particles(MPs).However,biodegradable MPs may pose stronger negative effects on several soil species than traditional MPs under some conditions.Biochar has been widely used in soil improvement and remediation,but the effects of biochar application on the physicochemical properties of the soil are still limited.Therefore,polylactic acid(PLA)MPs were selected as the research object,and a half-year soil culture experiment was conducted to analyze the effects of chicken-manure biochar on the quality of PLA-MP polluted soils.The results revealed that PLA-MPs pollution caused an increase of soil pH,posed the loss of nutrients(e.g.,nitrogen,phosphorus,and potassium),and influenced the soil carbon turnover.The alkalization of acidic soils and the varying upregulated activities of urease and invertase were observed post chicken-manure biochar application.Furthermore at the end of soil incubation clear increase in the available phosphorus and potassium with 61.08%and 6.10 times,respectively,was observed in PLA-MP polluted soils;however,a remarkable decline in inorganic nitrogen with 64.31%was observed.Under the synergistic effects of PLA-MPs and biochar,the net total carbon variable was significantly positively correlated with that of in PLA-MPs polluted soils.This study demonstrates that the biochar application slows down the PLA-MPs induced nutrient loss and that the soil total carbon turnover and nitrogen transformations are synergistically affected by biochar and PLA-MPs.

polylactic acid microplasticbiocharsoil physicochemical propertyenzyme activityacidic soil

邹晓燕、曹凯博、王强、汪印

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中国科学院城市环境研究所城市污染物转化重点实验室,福建 厦门 361021

中国科学院大学,北京 101408

福建农林大学生命科学学院,福州 350002

福州大学环境与安全工程学院,福州 350108

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聚乳酸微塑料 生物炭 土壤理化性质 酶活性 酸性土壤

福建省自然科学基金厦门市自然科学基金"一带一路"国际科学组织联盟项目福建省中科院STS计划福建省中科院STS计划福建省中科院STS计划福建省中科院STS计划福建省中科院STS计划中国科学院战略规划重点项目

2022J015103502Z20227239ANSO-CR-KP-2021-082020T30362021T31022021T30732021T30492022T3065XDA23030301

2024

10.11654/jaes.2023-0327

农业环境科学学报
农业部环境保护科研监测所 中国农业生态环境保护协会

农业环境科学学报

CSTPCD北大核心
影响因子：1.52
ISSN：1672-2043
年,卷(期)：2024.43(4)
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