Patrick A. Levasseur , Nathan Basiliko , Emily Smenderovac , Shaun A. Watmough
{"title":"施用石灰和植树后金属污染对凋落物分解和土壤呼吸的最小遗留影响","authors":"Patrick A. Levasseur , Nathan Basiliko , Emily Smenderovac , Shaun A. Watmough","doi":"10.1016/j.scitotenv.2025.179892","DOIUrl":null,"url":null,"abstract":"<div><div>Metal contamination impedes ecosystem processes such as soil respiration and litter decomposition. Forest remediation efforts that include liming and tree planting do not remove metals but alter soil chemical properties like pH and organic matter content that may alleviate metal stress. In this study we evaluated soil respiration and litter decomposition rates at 11 sites in the City of Greater Sudbury, Ontario that vary in metal (copper (Cu) and nickel (Ni)) contamination and have undergone regreening treatment (liming, fertilizing, and tree planting) that has been ongoing for almost 50 years. In contrast to studies in the region conducted 40 years ago on untreated sites we found no relationship between soil metal contamination and forest floor mass or decomposition rates. Differences in soil respiration among sites were largely attributable to large differences in soil temperature, with more exposed warmer sites with lower tree density having the highest rates of soil respiration. There were no relationships between soil metals and soil respiration. However, when soil respiration rates were normalized for temperature, sites that had higher water-extractable Cu concentrations in surface mineral soils had lower soil respiration rates. These data show that regreening efforts have largely been successful in restoring ecosystem function and while legacy metal pollution has some effect on soil respiration this effect is largely outweighed by large microsite variation in soil temperature.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"992 ","pages":"Article 179892"},"PeriodicalIF":8.0000,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Minimal legacy effects of metal pollution on litter decomposition and soil respiration following liming and tree planting\",\"authors\":\"Patrick A. Levasseur , Nathan Basiliko , Emily Smenderovac , Shaun A. Watmough\",\"doi\":\"10.1016/j.scitotenv.2025.179892\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Metal contamination impedes ecosystem processes such as soil respiration and litter decomposition. Forest remediation efforts that include liming and tree planting do not remove metals but alter soil chemical properties like pH and organic matter content that may alleviate metal stress. In this study we evaluated soil respiration and litter decomposition rates at 11 sites in the City of Greater Sudbury, Ontario that vary in metal (copper (Cu) and nickel (Ni)) contamination and have undergone regreening treatment (liming, fertilizing, and tree planting) that has been ongoing for almost 50 years. In contrast to studies in the region conducted 40 years ago on untreated sites we found no relationship between soil metal contamination and forest floor mass or decomposition rates. Differences in soil respiration among sites were largely attributable to large differences in soil temperature, with more exposed warmer sites with lower tree density having the highest rates of soil respiration. There were no relationships between soil metals and soil respiration. However, when soil respiration rates were normalized for temperature, sites that had higher water-extractable Cu concentrations in surface mineral soils had lower soil respiration rates. These data show that regreening efforts have largely been successful in restoring ecosystem function and while legacy metal pollution has some effect on soil respiration this effect is largely outweighed by large microsite variation in soil temperature.</div></div>\",\"PeriodicalId\":422,\"journal\":{\"name\":\"Science of the Total Environment\",\"volume\":\"992 \",\"pages\":\"Article 179892\"},\"PeriodicalIF\":8.0000,\"publicationDate\":\"2025-06-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Science of the Total Environment\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0048969725015335\",\"RegionNum\":1,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Science of the Total Environment","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0048969725015335","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Minimal legacy effects of metal pollution on litter decomposition and soil respiration following liming and tree planting
Metal contamination impedes ecosystem processes such as soil respiration and litter decomposition. Forest remediation efforts that include liming and tree planting do not remove metals but alter soil chemical properties like pH and organic matter content that may alleviate metal stress. In this study we evaluated soil respiration and litter decomposition rates at 11 sites in the City of Greater Sudbury, Ontario that vary in metal (copper (Cu) and nickel (Ni)) contamination and have undergone regreening treatment (liming, fertilizing, and tree planting) that has been ongoing for almost 50 years. In contrast to studies in the region conducted 40 years ago on untreated sites we found no relationship between soil metal contamination and forest floor mass or decomposition rates. Differences in soil respiration among sites were largely attributable to large differences in soil temperature, with more exposed warmer sites with lower tree density having the highest rates of soil respiration. There were no relationships between soil metals and soil respiration. However, when soil respiration rates were normalized for temperature, sites that had higher water-extractable Cu concentrations in surface mineral soils had lower soil respiration rates. These data show that regreening efforts have largely been successful in restoring ecosystem function and while legacy metal pollution has some effect on soil respiration this effect is largely outweighed by large microsite variation in soil temperature.
期刊介绍:
The Science of the Total Environment is an international journal dedicated to scientific research on the environment and its interaction with humanity. It covers a wide range of disciplines and seeks to publish innovative, hypothesis-driven, and impactful research that explores the entire environment, including the atmosphere, lithosphere, hydrosphere, biosphere, and anthroposphere.
The journal's updated Aims & Scope emphasizes the importance of interdisciplinary environmental research with broad impact. Priority is given to studies that advance fundamental understanding and explore the interconnectedness of multiple environmental spheres. Field studies are preferred, while laboratory experiments must demonstrate significant methodological advancements or mechanistic insights with direct relevance to the environment.