Yunshan Meng , Tianhao Wang , Xuepeng Zhou , Xu Yang , Marcela Hernández , Tairan Zhou , Qilin Lv , Xueqin Ren , Haojie Feng , Hong Pan , Shuwen Hu
{"title":"基于氮代谢的盐碱地土地利用优化模式评价","authors":"Yunshan Meng , Tianhao Wang , Xuepeng Zhou , Xu Yang , Marcela Hernández , Tairan Zhou , Qilin Lv , Xueqin Ren , Haojie Feng , Hong Pan , Shuwen Hu","doi":"10.1016/j.eti.2025.104363","DOIUrl":null,"url":null,"abstract":"<div><div>Enhancing soil nitrogen storage is a global concern, particularly in soils affected by salinization. Land use changes significantly affect soil nitrogen cycle and its metabolic processes; however, their impacts on nitrogen availability and microbial nitrogen transformation in saline-sodic soils remain unclear. To address this knowledge gap, soils of six land use types – paddy field (PF), dryland (DL), converted paddy field to dryland (SGH), forestland (FL), grassland (GL), and wasteland (WL) – were collected to investigate the underlying mechanism of nitrogen transformations. Compared to WL, agricultural land use systems (PF, DL, SGH) significantly decreased (<em>p</em> < 0.05) soil pH (10.65–8.38 units), electrical conductivity (EC) (1.51–0.19 dS m<sup>−1</sup>), exchangeable sodium percentage (ESP) (86–8 %), sodium adsorption ratio (SAR) (203 to 13), and water-soluble salt ions. Moreover, agricultural land use systems significantly increased soil organic matter (SOM), available phosphorus (AP), available potassium (AK), and nitrogen fraction contents relative to WL and enriched nitrogen-metabolizing microorganisms. Furthermore, agricultural land use systems were more advantageous than non-agricultural land use systems in improving soil nitrogen availability, through affecting N fixation, nitrification, and dissimilatory nitrate reduction to ammonium (DNRA). In addition, network analysis revealed that soil physicochemical properties shaped soil nitrogen-metabolizing microbial communities. Crucially, ammonium nitrogen (NH<sub>4</sub><sup>+</sup>-N) and nitrite nitrogen (NO<sub>2</sub><sup>-</sup>-N) were critical determinants of soil nitrogen metabolism dynamics. Therefore, agricultural land use systems, especially PF and DL, were conducive to the improvement of soil salinization and the promotion of soil nitrogen metabolism and storage in saline-sodic soils.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"40 ","pages":"Article 104363"},"PeriodicalIF":7.1000,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Evaluating the optimal land use pattern for saline-sodic soils from the perspective of nitrogen metabolism\",\"authors\":\"Yunshan Meng , Tianhao Wang , Xuepeng Zhou , Xu Yang , Marcela Hernández , Tairan Zhou , Qilin Lv , Xueqin Ren , Haojie Feng , Hong Pan , Shuwen Hu\",\"doi\":\"10.1016/j.eti.2025.104363\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Enhancing soil nitrogen storage is a global concern, particularly in soils affected by salinization. Land use changes significantly affect soil nitrogen cycle and its metabolic processes; however, their impacts on nitrogen availability and microbial nitrogen transformation in saline-sodic soils remain unclear. To address this knowledge gap, soils of six land use types – paddy field (PF), dryland (DL), converted paddy field to dryland (SGH), forestland (FL), grassland (GL), and wasteland (WL) – were collected to investigate the underlying mechanism of nitrogen transformations. Compared to WL, agricultural land use systems (PF, DL, SGH) significantly decreased (<em>p</em> < 0.05) soil pH (10.65–8.38 units), electrical conductivity (EC) (1.51–0.19 dS m<sup>−1</sup>), exchangeable sodium percentage (ESP) (86–8 %), sodium adsorption ratio (SAR) (203 to 13), and water-soluble salt ions. Moreover, agricultural land use systems significantly increased soil organic matter (SOM), available phosphorus (AP), available potassium (AK), and nitrogen fraction contents relative to WL and enriched nitrogen-metabolizing microorganisms. Furthermore, agricultural land use systems were more advantageous than non-agricultural land use systems in improving soil nitrogen availability, through affecting N fixation, nitrification, and dissimilatory nitrate reduction to ammonium (DNRA). In addition, network analysis revealed that soil physicochemical properties shaped soil nitrogen-metabolizing microbial communities. Crucially, ammonium nitrogen (NH<sub>4</sub><sup>+</sup>-N) and nitrite nitrogen (NO<sub>2</sub><sup>-</sup>-N) were critical determinants of soil nitrogen metabolism dynamics. Therefore, agricultural land use systems, especially PF and DL, were conducive to the improvement of soil salinization and the promotion of soil nitrogen metabolism and storage in saline-sodic soils.</div></div>\",\"PeriodicalId\":11725,\"journal\":{\"name\":\"Environmental Technology & Innovation\",\"volume\":\"40 \",\"pages\":\"Article 104363\"},\"PeriodicalIF\":7.1000,\"publicationDate\":\"2025-07-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Technology & Innovation\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2352186425003499\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"BIOTECHNOLOGY & APPLIED MICROBIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Technology & Innovation","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352186425003499","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}
Evaluating the optimal land use pattern for saline-sodic soils from the perspective of nitrogen metabolism
Enhancing soil nitrogen storage is a global concern, particularly in soils affected by salinization. Land use changes significantly affect soil nitrogen cycle and its metabolic processes; however, their impacts on nitrogen availability and microbial nitrogen transformation in saline-sodic soils remain unclear. To address this knowledge gap, soils of six land use types – paddy field (PF), dryland (DL), converted paddy field to dryland (SGH), forestland (FL), grassland (GL), and wasteland (WL) – were collected to investigate the underlying mechanism of nitrogen transformations. Compared to WL, agricultural land use systems (PF, DL, SGH) significantly decreased (p < 0.05) soil pH (10.65–8.38 units), electrical conductivity (EC) (1.51–0.19 dS m−1), exchangeable sodium percentage (ESP) (86–8 %), sodium adsorption ratio (SAR) (203 to 13), and water-soluble salt ions. Moreover, agricultural land use systems significantly increased soil organic matter (SOM), available phosphorus (AP), available potassium (AK), and nitrogen fraction contents relative to WL and enriched nitrogen-metabolizing microorganisms. Furthermore, agricultural land use systems were more advantageous than non-agricultural land use systems in improving soil nitrogen availability, through affecting N fixation, nitrification, and dissimilatory nitrate reduction to ammonium (DNRA). In addition, network analysis revealed that soil physicochemical properties shaped soil nitrogen-metabolizing microbial communities. Crucially, ammonium nitrogen (NH4+-N) and nitrite nitrogen (NO2--N) were critical determinants of soil nitrogen metabolism dynamics. Therefore, agricultural land use systems, especially PF and DL, were conducive to the improvement of soil salinization and the promotion of soil nitrogen metabolism and storage in saline-sodic soils.
期刊介绍:
Environmental Technology & Innovation adopts a challenge-oriented approach to solutions by integrating natural sciences to promote a sustainable future. The journal aims to foster the creation and development of innovative products, technologies, and ideas that enhance the environment, with impacts across soil, air, water, and food in rural and urban areas.
As a platform for disseminating scientific evidence for environmental protection and sustainable development, the journal emphasizes fundamental science, methodologies, tools, techniques, and policy considerations. It emphasizes the importance of science and technology in environmental benefits, including smarter, cleaner technologies for environmental protection, more efficient resource processing methods, and the evidence supporting their effectiveness.