Shijie Zhou , Yue Xiu , Jingjing Wu , Jinchao Gong , Tahmina Kausar , Abraham Allan Degen , Feida Sun , Zhouwen Ma , Ran Xue , Yanfu Bai
{"title":"十年主动恢复对沙化草地土壤有机碳的正启动效应:生物炭的放大效应","authors":"Shijie Zhou , Yue Xiu , Jingjing Wu , Jinchao Gong , Tahmina Kausar , Abraham Allan Degen , Feida Sun , Zhouwen Ma , Ran Xue , Yanfu Bai","doi":"10.1016/j.ecolind.2025.114250","DOIUrl":null,"url":null,"abstract":"<div><div>Grassland restoration can be achieved through active or passive methods. Biochar enhances soil structure and nutrient availability and, therefore, can play a crucial role in restoring degraded grassland. However, the long-term effects of biochar addition on both active and passive restoration of desertified grasslands remain unclear. This aim of this study was to fill this gap by determining how biochar influences organic carbon mineralization and priming effects in grasslands undergoing more than a decade of active or passive restoration. The results demonstrated that, compared to degraded grassland, biochar application under active restoration increased soil CO<sub>2</sub> emissions significantly. Positive priming effects were observed in both the topsoil (120.5–297.0 %) and subsoil (157.2–287.3 %). Conversely, under passive restoration, priming effects were positive in the topsoil (34.7–80.9 %) but negative in the subsoil (−67.1% to −47.7 %). In passive restoration, phospholipid fatty acids (PLFA) were the primary drivers of priming effects, while in active restoration, soil pH was the primary driver. This study bridges the fields of restoration and soil ecology by evaluating the effects of biochar on organic carbon mineralization and priming effects in degraded grasslands. The findings highlight the importance of understanding how different restoration approaches interact with biochar addition to influence soil mineralization processes. This research provides valuable insights for grassland managers and policymakers in developing effective restoration strategies, particularly in the context of climate change.</div></div>","PeriodicalId":11459,"journal":{"name":"Ecological Indicators","volume":"179 ","pages":"Article 114250"},"PeriodicalIF":7.0000,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Decade-long active restoration induced positive priming effects on soil organic carbon in desertified grassland: The amplifying effect of biochar\",\"authors\":\"Shijie Zhou , Yue Xiu , Jingjing Wu , Jinchao Gong , Tahmina Kausar , Abraham Allan Degen , Feida Sun , Zhouwen Ma , Ran Xue , Yanfu Bai\",\"doi\":\"10.1016/j.ecolind.2025.114250\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Grassland restoration can be achieved through active or passive methods. Biochar enhances soil structure and nutrient availability and, therefore, can play a crucial role in restoring degraded grassland. However, the long-term effects of biochar addition on both active and passive restoration of desertified grasslands remain unclear. This aim of this study was to fill this gap by determining how biochar influences organic carbon mineralization and priming effects in grasslands undergoing more than a decade of active or passive restoration. The results demonstrated that, compared to degraded grassland, biochar application under active restoration increased soil CO<sub>2</sub> emissions significantly. Positive priming effects were observed in both the topsoil (120.5–297.0 %) and subsoil (157.2–287.3 %). Conversely, under passive restoration, priming effects were positive in the topsoil (34.7–80.9 %) but negative in the subsoil (−67.1% to −47.7 %). In passive restoration, phospholipid fatty acids (PLFA) were the primary drivers of priming effects, while in active restoration, soil pH was the primary driver. This study bridges the fields of restoration and soil ecology by evaluating the effects of biochar on organic carbon mineralization and priming effects in degraded grasslands. The findings highlight the importance of understanding how different restoration approaches interact with biochar addition to influence soil mineralization processes. This research provides valuable insights for grassland managers and policymakers in developing effective restoration strategies, particularly in the context of climate change.</div></div>\",\"PeriodicalId\":11459,\"journal\":{\"name\":\"Ecological Indicators\",\"volume\":\"179 \",\"pages\":\"Article 114250\"},\"PeriodicalIF\":7.0000,\"publicationDate\":\"2025-09-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ecological Indicators\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1470160X25011823\",\"RegionNum\":2,\"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":"Ecological Indicators","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1470160X25011823","RegionNum":2,"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}
Decade-long active restoration induced positive priming effects on soil organic carbon in desertified grassland: The amplifying effect of biochar
Grassland restoration can be achieved through active or passive methods. Biochar enhances soil structure and nutrient availability and, therefore, can play a crucial role in restoring degraded grassland. However, the long-term effects of biochar addition on both active and passive restoration of desertified grasslands remain unclear. This aim of this study was to fill this gap by determining how biochar influences organic carbon mineralization and priming effects in grasslands undergoing more than a decade of active or passive restoration. The results demonstrated that, compared to degraded grassland, biochar application under active restoration increased soil CO2 emissions significantly. Positive priming effects were observed in both the topsoil (120.5–297.0 %) and subsoil (157.2–287.3 %). Conversely, under passive restoration, priming effects were positive in the topsoil (34.7–80.9 %) but negative in the subsoil (−67.1% to −47.7 %). In passive restoration, phospholipid fatty acids (PLFA) were the primary drivers of priming effects, while in active restoration, soil pH was the primary driver. This study bridges the fields of restoration and soil ecology by evaluating the effects of biochar on organic carbon mineralization and priming effects in degraded grasslands. The findings highlight the importance of understanding how different restoration approaches interact with biochar addition to influence soil mineralization processes. This research provides valuable insights for grassland managers and policymakers in developing effective restoration strategies, particularly in the context of climate change.
期刊介绍:
The ultimate aim of Ecological Indicators is to integrate the monitoring and assessment of ecological and environmental indicators with management practices. The journal provides a forum for the discussion of the applied scientific development and review of traditional indicator approaches as well as for theoretical, modelling and quantitative applications such as index development. Research into the following areas will be published.
• All aspects of ecological and environmental indicators and indices.
• New indicators, and new approaches and methods for indicator development, testing and use.
• Development and modelling of indices, e.g. application of indicator suites across multiple scales and resources.
• Analysis and research of resource, system- and scale-specific indicators.
• Methods for integration of social and other valuation metrics for the production of scientifically rigorous and politically-relevant assessments using indicator-based monitoring and assessment programs.
• How research indicators can be transformed into direct application for management purposes.
• Broader assessment objectives and methods, e.g. biodiversity, biological integrity, and sustainability, through the use of indicators.
• Resource-specific indicators such as landscape, agroecosystems, forests, wetlands, etc.