塑料污染对湿地土壤植物特性和温室气体排放的影响:荟萃分析

IF 12.2 1区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Journal of Hazardous Materials Pub Date : 2024-10-15 DOI:10.1016/j.jhazmat.2024.136167
Wei Zhao, Zhen-Ming Ge, Ke-Hua Zhu, Qing Lyu, Shi-Xian Liu, Hua-Yu Chen, Zeng-Feng Li
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引用次数: 0

摘要

湿地中的塑料污染最近已成为一个紧迫的环境问题。然而,塑料污染对湿地土壤植物特性和温室气体(GHG)排放的影响仍不清楚。因此,本研究基于 44 个研究地点进行了荟萃分析,以探讨塑料污染对不同湿地类型的土壤理化变量、土壤微生物、酶活性、功能基因、植物特性和温室气体(CO2、CH4 和 N2O)排放的影响。根据所收集的数据集,塑料污染显著增加了土壤有机质和有机碳,平均增幅分别为 28.9% 和 34.2%,同时降低了无机营养元素、细菌阿尔法多样性和酶活性,平均降幅为 5.9-14.2% 。细菌数量对塑料污染的响应因门类而异。塑料污染导致植物生物量和光合效率平均下降了 12.8%和 18.4%。塑料的浓度和暴露时间在影响湿地土壤和植物特性方面起着关键作用。此外,塑料暴露显著增加了与C降解相关的功能基因和氨氧化微生物的丰度,并增加了CO2和N2O的排放量(效应大小分别为2.10和1.94)。我们还发现,塑料浓度和暴露时间会影响湿地土壤-植物系统。我们的研究结果可能有助于设计有关塑料影响的进一步研究,并为减轻湿地塑料污染制定适当的措施。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Impacts of plastic pollution on soil–plant properties and greenhouse gas emissions in wetlands: A meta-analysis
Plastic pollution in wetlands has recently emerged as an urgent environmental problem. However, the impacts of plastic contamination on soil-plant properties and greenhouse gas (GHG) emissions in wetlands remain unclear. Thus, this study conducted a meta-analysis based on 44 study sites to explore the influence of plastic pollution on soil physicochemical variables, soil microorganisms, enzyme activity, functional genes, plant characteristics, and GHG emissions (CO2, CH4, and N2O) in different wetland types. Based on the collected dataset, the plastic pollution significantly increased soil organic matter and organic carbon by on average 28.9% and 34.2%, respectively, while decreased inorganic nutrient elements, bacteria alpha diversity and enzyme activities by an average of 5.9−14.2%. The response of bacterial abundance to plastic pollution varied depending on phylum classes. Plant biomass and photosynthetic efficiency were decreased by an average of 12.8% and 18.4% due to plastic pollution. The concentration and exposure time of plastics play a key role in influencing the soil and plant properties in wetlands. Furthermore, plastic exposure notably increased the abundance of the functional genes related to C degradation and the ammonia oxidizing microorganisms, and the consequent CO2 and N2O emissions (with effect sizes of 2.10 and 1.94, respectively). We also found that plastic concentrations and exposure duration affected the wetland soil–plant system. Our results might be helpful to design further investigations on plastic effects and develop appropriate measures for mitigating plastic pollution in wetlands.
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来源期刊
Journal of Hazardous Materials
Journal of Hazardous Materials 工程技术-工程:环境
CiteScore
25.40
自引率
5.90%
发文量
3059
审稿时长
58 days
期刊介绍: The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.
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