印度北部不同土地利用方式陆相土壤微塑料多样性分析及风险评估

IF 7.2 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Gondwana Research Pub Date : 2025-08-18 DOI:10.1016/j.gr.2025.07.025

Ekta Gupta , Shweta Yadav , Priyansha Gupta , Virendra Kumar Mishra , Anju Patel , Mahua Saha , Poonam C. Singh , Pankaj Kumar Srivastava

{"title":"印度北部不同土地利用方式陆相土壤微塑料多样性分析及风险评估","authors":"Ekta Gupta , Shweta Yadav , Priyansha Gupta , Virendra Kumar Mishra , Anju Patel , Mahua Saha , Poonam C. Singh , Pankaj Kumar Srivastava","doi":"10.1016/j.gr.2025.07.025","DOIUrl":null,"url":null,"abstract":"<div><div>Microplastics (MPs) are widely acknowledged as emerging pollutants in terrestrial ecosystem, yet their ecological threats in soil remain uncovered. This study presents the first comprehensive assessment of the abundance, characteristics, diversity, and ecological risks of soil-borne MPs across eight distinct landuse types in India, including industrial areas, dumping sites, municipal areas, wetlands, and various agricultural settings. Soil samples were collected and analyzed for MP abundance (MPs kg<sup>−1</sup>), morphology, polymer composition, diversity assessment and potential environmental risks. The results revealed the highest mean MP abundance in industrial areas (3710 ± 1127), followed by dumping sites (3310 ± 2195), municipal city areas (1247 ± 386), agriculture near dumping sites (546 ± 204), urban agriculture (478 ± 94), agriculture with plastic mulching (210 ± 54), <em>peri</em>-urban agriculture (113 ± 34), and wetlands (63 ± 21). Predominant shapes were fragments, fibers, films, and the particle sizes majorly belonged to 10–300 µm and 300–500 µm. Low-density polyethylene (LDPE), high-density polyethylene (HDPE) and polypropylene (PP) were the most abundant polymers in all the landuses. Shannon-Wiener index (SWI) and Simpson Diversity index (SDI) indicated significant variations in MPs diversity across landuses for shape, size, color, and polymer composition. Landuses were categorized as Level V (>1000) in terms of the Polymer Hazard Index (PHI), while Pollution Load Index (PLI) suggested a minor risk level. Based on the Potential Ecological Risk Index (PERI), wetlands exhibited low-risk and rest other landuses represented low to very high-risk category. The Geo-accumulation Index <span><math><mrow><msub><mrow><mo>(</mo><mi>I</mi></mrow><mrow><mi>geo</mi></mrow></msub><mrow><mo>)</mo></mrow></mrow></math></span> was also computed and evident as less contaminated landuse (wetland) to extremely contaminated (industrial area) landuse. This study provides baseline data on the occurrence and ecological risk of MPs in Indian soil and highlights the urgent need for targeted mitigation strategies. The findings contribute to a better understanding of MP dynamics across landuses and emphasize the necessity for policy interventions in terrestrial MPs management.</div></div>","PeriodicalId":12761,"journal":{"name":"Gondwana Research","volume":"148 ","pages":"Pages 293-311"},"PeriodicalIF":7.2000,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Diversity analysis and risk assessment of microplastics in terrestrial soil across different landuses of northern India\",\"authors\":\"Ekta Gupta , Shweta Yadav , Priyansha Gupta , Virendra Kumar Mishra , Anju Patel , Mahua Saha , Poonam C. Singh , Pankaj Kumar Srivastava\",\"doi\":\"10.1016/j.gr.2025.07.025\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Microplastics (MPs) are widely acknowledged as emerging pollutants in terrestrial ecosystem, yet their ecological threats in soil remain uncovered. This study presents the first comprehensive assessment of the abundance, characteristics, diversity, and ecological risks of soil-borne MPs across eight distinct landuse types in India, including industrial areas, dumping sites, municipal areas, wetlands, and various agricultural settings. Soil samples were collected and analyzed for MP abundance (MPs kg<sup>−1</sup>), morphology, polymer composition, diversity assessment and potential environmental risks. The results revealed the highest mean MP abundance in industrial areas (3710 ± 1127), followed by dumping sites (3310 ± 2195), municipal city areas (1247 ± 386), agriculture near dumping sites (546 ± 204), urban agriculture (478 ± 94), agriculture with plastic mulching (210 ± 54), <em>peri</em>-urban agriculture (113 ± 34), and wetlands (63 ± 21). Predominant shapes were fragments, fibers, films, and the particle sizes majorly belonged to 10–300 µm and 300–500 µm. Low-density polyethylene (LDPE), high-density polyethylene (HDPE) and polypropylene (PP) were the most abundant polymers in all the landuses. Shannon-Wiener index (SWI) and Simpson Diversity index (SDI) indicated significant variations in MPs diversity across landuses for shape, size, color, and polymer composition. Landuses were categorized as Level V (>1000) in terms of the Polymer Hazard Index (PHI), while Pollution Load Index (PLI) suggested a minor risk level. Based on the Potential Ecological Risk Index (PERI), wetlands exhibited low-risk and rest other landuses represented low to very high-risk category. The Geo-accumulation Index <span><math><mrow><msub><mrow><mo>(</mo><mi>I</mi></mrow><mrow><mi>geo</mi></mrow></msub><mrow><mo>)</mo></mrow></mrow></math></span> was also computed and evident as less contaminated landuse (wetland) to extremely contaminated (industrial area) landuse. This study provides baseline data on the occurrence and ecological risk of MPs in Indian soil and highlights the urgent need for targeted mitigation strategies. The findings contribute to a better understanding of MP dynamics across landuses and emphasize the necessity for policy interventions in terrestrial MPs management.</div></div>\",\"PeriodicalId\":12761,\"journal\":{\"name\":\"Gondwana Research\",\"volume\":\"148 \",\"pages\":\"Pages 293-311\"},\"PeriodicalIF\":7.2000,\"publicationDate\":\"2025-08-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Gondwana Research\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1342937X25002540\",\"RegionNum\":1,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"GEOSCIENCES, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Gondwana Research","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1342937X25002540","RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

摘要

微塑料被广泛认为是陆地生态系统中的新兴污染物，但其对土壤的生态威胁尚不清楚。本研究首次全面评估了印度八种不同土地利用类型（包括工业区、垃圾场、市区、湿地和各种农业环境）中土壤携带的MPs的丰度、特征、多样性和生态风险。收集土壤样品并分析MP丰度（MPs kg−1）、形态、聚合物组成、多样性评估和潜在环境风险。结果显示，工业地区MP丰度最高（3710±1127），其次为倾倒场（3310±2195）、市区（1247±386）、倾倒场附近农业（546±204）、都市农业（478±94）、地膜农业（210±54）、城郊农业（113±34）和湿地（63±21）。主要形态为碎片、纤维、薄膜，粒径主要在10 ~ 300µm和300 ~ 500µm之间。低密度聚乙烯（LDPE）、高密度聚乙烯（HDPE）和聚丙烯（PP）是所有土地利用中最丰富的聚合物。Shannon-Wiener指数（SWI）和Simpson多样性指数（SDI）表明，不同土地类型的MPs多样性在形状、大小、颜色和聚合物组成方面存在显著差异。根据聚合物危害指数（PHI），土地用途被划分为V级（>1000），而污染负荷指数（PLI）表明风险水平较低。潜在生态风险指数（PERI）显示湿地为低风险，其余土地为低至极高风险。地积指数（Igeo）从污染程度较低的土地（湿地）到污染程度较高的土地（工业区）。这项研究提供了关于印度土壤中MPs发生和生态风险的基线数据，并强调了制定有针对性的缓解战略的迫切需要。这些发现有助于更好地了解不同土地用途的生物多样性动态，并强调了在陆地生物多样性管理中进行政策干预的必要性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Diversity analysis and risk assessment of microplastics in terrestrial soil across different landuses of northern India

查看原文本刊更多论文

Diversity analysis and risk assessment of microplastics in terrestrial soil across different landuses of northern India

Microplastics (MPs) are widely acknowledged as emerging pollutants in terrestrial ecosystem, yet their ecological threats in soil remain uncovered. This study presents the first comprehensive assessment of the abundance, characteristics, diversity, and ecological risks of soil-borne MPs across eight distinct landuse types in India, including industrial areas, dumping sites, municipal areas, wetlands, and various agricultural settings. Soil samples were collected and analyzed for MP abundance (MPs kg⁻¹), morphology, polymer composition, diversity assessment and potential environmental risks. The results revealed the highest mean MP abundance in industrial areas (3710 ± 1127), followed by dumping sites (3310 ± 2195), municipal city areas (1247 ± 386), agriculture near dumping sites (546 ± 204), urban agriculture (478 ± 94), agriculture with plastic mulching (210 ± 54), peri-urban agriculture (113 ± 34), and wetlands (63 ± 21). Predominant shapes were fragments, fibers, films, and the particle sizes majorly belonged to 10–300 µm and 300–500 µm. Low-density polyethylene (LDPE), high-density polyethylene (HDPE) and polypropylene (PP) were the most abundant polymers in all the landuses. Shannon-Wiener index (SWI) and Simpson Diversity index (SDI) indicated significant variations in MPs diversity across landuses for shape, size, color, and polymer composition. Landuses were categorized as Level V (>1000) in terms of the Polymer Hazard Index (PHI), while Pollution Load Index (PLI) suggested a minor risk level. Based on the Potential Ecological Risk Index (PERI), wetlands exhibited low-risk and rest other landuses represented low to very high-risk category. The Geo-accumulation Index

{(I}_{geo})

was also computed and evident as less contaminated landuse (wetland) to extremely contaminated (industrial area) landuse. This study provides baseline data on the occurrence and ecological risk of MPs in Indian soil and highlights the urgent need for targeted mitigation strategies. The findings contribute to a better understanding of MP dynamics across landuses and emphasize the necessity for policy interventions in terrestrial MPs management.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Gondwana Research 地学-地球科学综合

CiteScore

12.90

自引率

6.60%

发文量

298

审稿时长

65 days

期刊介绍： Gondwana Research (GR) is an International Journal aimed to promote high quality research publications on all topics related to solid Earth, particularly with reference to the origin and evolution of continents, continental assemblies and their resources. GR is an "all earth science" journal with no restrictions on geological time, terrane or theme and covers a wide spectrum of topics in geosciences such as geology, geomorphology, palaeontology, structure, petrology, geochemistry, stable isotopes, geochronology, economic geology, exploration geology, engineering geology, geophysics, and environmental geology among other themes, and provides an appropriate forum to integrate studies from different disciplines and different terrains. In addition to regular articles and thematic issues, the journal invites high profile state-of-the-art reviews on thrust area topics for its column, ''GR FOCUS''. Focus articles include short biographies and photographs of the authors. Short articles (within ten printed pages) for rapid publication reporting important discoveries or innovative models of global interest will be considered under the category ''GR LETTERS''.