{"title":"微生物自养解释了大规模的土壤二氧化碳固定","authors":"Hao Liao, Xiuli Hao, Fei Qin, Manuel Delgado-Baquerizo, Yurong Liu, Jizhong Zhou, Peng Cai, Wenli Chen, Qiaoyun Huang","doi":"10.1111/gcb.16452","DOIUrl":null,"url":null,"abstract":"<p>Microbial communities play critical roles in fixing carbon from the atmosphere and fixing it in the soils. However, the large-scale variations and drivers of these microbial communities remain poorly understood. Here, we conducted a large-scale survey across China and found that soil autotrophic organisms are critical for explaining CO<sub>2</sub> fluxes from the atmosphere to soils. In particular, we showed that large-scale variations in CO<sub>2</sub> fixation rates are highly correlated to those in autotrophic bacteria and phototrophic protists. Paddy soils, supporting a larger proportion of obligate bacterial and protist autotrophs, display four-fold of CO<sub>2</sub> fixation rates over upland and forest soils. Precipitation and pH, together with key ecological clusters of autotrophic microbes, also played important roles in controlling CO<sub>2</sub> fixation. Our work provides a novel quantification on the contribution of terrestrial autotrophic microbes to soil CO<sub>2</sub> fixation processes at a large scale, with implications for global carbon regulation under climate change.</p>","PeriodicalId":175,"journal":{"name":"Global Change Biology","volume":null,"pages":null},"PeriodicalIF":10.8000,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"12","resultStr":"{\"title\":\"Microbial autotrophy explains large-scale soil CO2 fixation\",\"authors\":\"Hao Liao, Xiuli Hao, Fei Qin, Manuel Delgado-Baquerizo, Yurong Liu, Jizhong Zhou, Peng Cai, Wenli Chen, Qiaoyun Huang\",\"doi\":\"10.1111/gcb.16452\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Microbial communities play critical roles in fixing carbon from the atmosphere and fixing it in the soils. However, the large-scale variations and drivers of these microbial communities remain poorly understood. Here, we conducted a large-scale survey across China and found that soil autotrophic organisms are critical for explaining CO<sub>2</sub> fluxes from the atmosphere to soils. In particular, we showed that large-scale variations in CO<sub>2</sub> fixation rates are highly correlated to those in autotrophic bacteria and phototrophic protists. Paddy soils, supporting a larger proportion of obligate bacterial and protist autotrophs, display four-fold of CO<sub>2</sub> fixation rates over upland and forest soils. Precipitation and pH, together with key ecological clusters of autotrophic microbes, also played important roles in controlling CO<sub>2</sub> fixation. Our work provides a novel quantification on the contribution of terrestrial autotrophic microbes to soil CO<sub>2</sub> fixation processes at a large scale, with implications for global carbon regulation under climate change.</p>\",\"PeriodicalId\":175,\"journal\":{\"name\":\"Global Change Biology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":10.8000,\"publicationDate\":\"2022-10-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"12\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Global Change Biology\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/gcb.16452\",\"RegionNum\":1,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"BIODIVERSITY CONSERVATION\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Global Change Biology","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/gcb.16452","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIODIVERSITY CONSERVATION","Score":null,"Total":0}
Microbial autotrophy explains large-scale soil CO2 fixation
Microbial communities play critical roles in fixing carbon from the atmosphere and fixing it in the soils. However, the large-scale variations and drivers of these microbial communities remain poorly understood. Here, we conducted a large-scale survey across China and found that soil autotrophic organisms are critical for explaining CO2 fluxes from the atmosphere to soils. In particular, we showed that large-scale variations in CO2 fixation rates are highly correlated to those in autotrophic bacteria and phototrophic protists. Paddy soils, supporting a larger proportion of obligate bacterial and protist autotrophs, display four-fold of CO2 fixation rates over upland and forest soils. Precipitation and pH, together with key ecological clusters of autotrophic microbes, also played important roles in controlling CO2 fixation. Our work provides a novel quantification on the contribution of terrestrial autotrophic microbes to soil CO2 fixation processes at a large scale, with implications for global carbon regulation under climate change.
期刊介绍:
Global Change Biology is an environmental change journal committed to shaping the future and addressing the world's most pressing challenges, including sustainability, climate change, environmental protection, food and water safety, and global health.
Dedicated to fostering a profound understanding of the impacts of global change on biological systems and offering innovative solutions, the journal publishes a diverse range of content, including primary research articles, technical advances, research reviews, reports, opinions, perspectives, commentaries, and letters. Starting with the 2024 volume, Global Change Biology will transition to an online-only format, enhancing accessibility and contributing to the evolution of scholarly communication.