Effects of land use change and agricultural management on soil carbon stocks in tropical pastures

IF 6.4 1区农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY

Agriculture, Ecosystems & Environment Pub Date : 2025-10-14 DOI:10.1016/j.agee.2025.110024

Rafaela Ferraz Molina , Waldssimiler Teixeira de Mattos , Sandra Furlan Nogueira , Cristiano Alberto de Andrade , Lucas Ferreira Penteado , Cristina Maria Pacheco Barbosa , Luciana Gerdes

{"title":"Effects of land use change and agricultural management on soil carbon stocks in tropical pastures","authors":"Rafaela Ferraz Molina , Waldssimiler Teixeira de Mattos , Sandra Furlan Nogueira , Cristiano Alberto de Andrade , Lucas Ferreira Penteado , Cristina Maria Pacheco Barbosa , Luciana Gerdes","doi":"10.1016/j.agee.2025.110024","DOIUrl":null,"url":null,"abstract":"<div><div>In Brazil, land use changes, particularly in the Atlantic Forest biome, significantly impact soil carbon dynamics. Conservation practices, such as no-till farming and integrated systems, can mitigate GHG emissions by enhancing soil organic carbon (SOC) sequestration. This study aims to assess changes in SOCS resulting from three distinct LUC pathways: from natural vegetation (NV) to extensive pasture (EP); from EP to a crop-livestock-forest integration system (iCLF); and from extensive pasture to no-till soybean monoculture (NT). Areas with similar soil types (Oxisol) but different land uses were evaluated: NV, EP, iCLF, and NT. SOC stocks, C-accumulation rates, and isotopic composition (δ<sup>13</sup>C) were analyzed. The conversion of NV to EP increased carbon stocks in the 0–30 cm layer, with δ<sup>13</sup>C indicating pasture contribution. The transition from EP to iCLF further promote SOC accumulation across all depths, with δ<sup>13</sup>C suggesting contributions from both C<sub>3</sub> and C<sub>4</sub> plants. In contrast, converting EP to NT did not significantly affect SOC stocks. The annual SOC accumulation rates (0–100 cm) were 0.34, 5.38, and 2.35 Mg C ha<sup>−1</sup> year<sup>−1</sup> for NV to EP, EP to iCLF, and EP to NT, respectively. The corresponding SOC change factors were 1.24, 1.52, and 1.03. These findings highlight the potential of integrated systems to enhance soil carbon sequestration compared to conventional pasture and no-till practices.</div></div>","PeriodicalId":7512,"journal":{"name":"Agriculture, Ecosystems & Environment","volume":"396 ","pages":"Article 110024"},"PeriodicalIF":6.4000,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Agriculture, Ecosystems & Environment","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167880925005560","RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRICULTURE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

In Brazil, land use changes, particularly in the Atlantic Forest biome, significantly impact soil carbon dynamics. Conservation practices, such as no-till farming and integrated systems, can mitigate GHG emissions by enhancing soil organic carbon (SOC) sequestration. This study aims to assess changes in SOCS resulting from three distinct LUC pathways: from natural vegetation (NV) to extensive pasture (EP); from EP to a crop-livestock-forest integration system (iCLF); and from extensive pasture to no-till soybean monoculture (NT). Areas with similar soil types (Oxisol) but different land uses were evaluated: NV, EP, iCLF, and NT. SOC stocks, C-accumulation rates, and isotopic composition (δ¹³C) were analyzed. The conversion of NV to EP increased carbon stocks in the 0–30 cm layer, with δ¹³C indicating pasture contribution. The transition from EP to iCLF further promote SOC accumulation across all depths, with δ¹³C suggesting contributions from both C₃ and C₄ plants. In contrast, converting EP to NT did not significantly affect SOC stocks. The annual SOC accumulation rates (0–100 cm) were 0.34, 5.38, and 2.35 Mg C ha⁻¹ year⁻¹ for NV to EP, EP to iCLF, and EP to NT, respectively. The corresponding SOC change factors were 1.24, 1.52, and 1.03. These findings highlight the potential of integrated systems to enhance soil carbon sequestration compared to conventional pasture and no-till practices.

查看原文本刊更多论文

土地利用变化和农业管理对热带牧场土壤碳储量的影响

在巴西，土地利用的变化，特别是在大西洋森林生物群系，显著影响土壤碳动态。保护措施，如免耕耕作和综合系统，可以通过增强土壤有机碳（SOC）固存来减少温室气体排放。本研究旨在评估三种不同的土地利用变化途径导致的SOCS变化：从自然植被（NV）到广泛的牧场（EP）；从生态环境到作物-牲畜-森林一体化系统（iCLF）；从粗放型牧场到免耕大豆单一栽培（NT）。对土壤类型相似但土地利用方式不同的地区进行了NV、EP、iCLF和NT评价，分析了土壤有机碳储量、碳积累速率和同位素组成（δ13C）。NV向EP的转化增加了0 ~ 30 cm层的碳储量，δ13C表示牧场的贡献。从EP到iCLF的转变进一步促进了所有深度的有机碳积累，δ13C表明C3和C4植物都有贡献。相反，将EP转化为NT对SOC储量没有显著影响。NV向EP、EP向iCLF和EP向NT的年SOC积累速率（0-100 cm）分别为0.34、5.38和2.35 Mg C ha−1年−1。相应的SOC变化因子分别为1.24、1.52和1.03。这些发现强调了与传统的牧场和免耕做法相比，综合系统在增强土壤固碳方面的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Agriculture, Ecosystems & Environment 环境科学-环境科学

CiteScore

11.70

自引率

9.10%

发文量

392

审稿时长

26 days

期刊介绍： Agriculture, Ecosystems and Environment publishes scientific articles dealing with the interface between agroecosystems and the natural environment, specifically how agriculture influences the environment and how changes in that environment impact agroecosystems. Preference is given to papers from experimental and observational research at the field, system or landscape level, from studies that enhance our understanding of processes using data-based biophysical modelling, and papers that bridge scientific disciplines and integrate knowledge. All papers should be placed in an international or wide comparative context.