Biochar addition increased soil bacterial diversity and richness: Large-scale evidence of field experiments.

Autor: Xiang Y; School of Geography and Resources, Guizhou Provincial Key Laboratory of Geographic State Monitoring of Watershed, Institute of Guizhou Mountain, Guizhou Education University, Guiyang 550018, China., Liu Y; School of Biological Sciences, Guizhou Education University, Guiyang 550018, China., Niazi NK; Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan., Bolan N; School of Agriculture and Environment, The UWA Institute of Agriculture, The University of Western Australia, 6001 Perth, WA, Australia., Zhao L; SDIC Gansu Power Sales Co., Ltd., Lanzhou, Gansu, China., Zhang S; School of Geography and Resources, Guizhou Provincial Key Laboratory of Geographic State Monitoring of Watershed, Institute of Guizhou Mountain, Guizhou Education University, Guiyang 550018, China., Xue J; College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; Scion, Private Bag, 29237 Christchurch, New Zealand., Yao B; State Key Laboratory of Tree Genetics and Breeding, Institute of Ecology Conservation and Restoration, Chinese Academy of Forestry, Beijing 100091, China. Electronic address: acmn21@caf.ac.cn., Li Y; The State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems of Lanzhou University, National Field Scientific Observation and Research Station of Grassland Agro-Ecosystems in Gansu Qingyang, College of Pastoral Agriculture Science and Technology, Lanzhou 730020, China. Electronic address: yuanli@lzu.edu.cn.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2023 Oct 01; Vol. 893, pp. 164961. Date of Electronic Publication: 2023 Jun 17.
DOI: 10.1016/j.scitotenv.2023.164961
Abstrakt: Biochar plays a crucial role in enhancing soil ecological functions and productivity, and mitigating environmental pollution. Despite the available studies conducted through high-throughput sequencing to understand the effects of biochar on soil bacterial diversity and richness, a comprehensive understanding remains elusive. Our global meta-analysis addresses this knowledge gap, incorporating 473 pairs of observations from 84 studies to assess soil bacterial diversity and richness response to biochar addition. We found that biochar application increased bacterial Shannon and Chao1 indices by 0.99 % and 6.45 % respectively. However, these positive effects were context-dependent, especially concerning bacterial diversity. Through aggregated boosted trees analysis, we determined that soil characteristics (including soil organic carbon and nitrogen contents, soil pH, and soil texture) had a more significant influence than biochar properties, experimental conditions, or climatic factors on soil bacterial diversity and richness post biochar addition. In particular, the soil carbon to nitrogen ratio stood out as the leading factor influencing the bacterial Shannon and Chao1 indices following biochar addition. Our findings offer new insights into biochar's influence on soil bacterial activity, taking into account biochar-mediated spatiotemporal variation. This information is pivotal for optimizing biochar characteristics and application to improve soil biological health.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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