Factors Driving Soil Respiration Rate After Different Fertilizer Sources Addition

文献类型： 外文期刊

第一作者： Zou, Yukun

作者： Zou, Yukun;Shan, Ying;Yue, Zhengfu;Zhang, Qiaoyan;Zou, Yukun;Yue, Zhengfu;Gioacchini, Paola;Montecchio, Daniela;Gaggia, Francesca;Alberoni, Daniele;Baffoni, Loredana;Marzadori, Claudio;Di Gioia, Diana;Zou, Yukun;Shan, Ying;Yue, Zhengfu;Zhang, Qiaoyan;Xiong, Peng

作者机构：

关键词： soil respiration; bacteria; fungi; soil texture; microbial community

期刊名称：AGRONOMY-BASEL （ 影响因子：3.4； 五年影响因子：3.8 ）

ISSN：

年卷期： 2024 年 14 卷 11 期

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收录情况： SCI

摘要： Soil respiration is a critical process that regulates key ecosystem functions such as climate control, nutrient cycling, and plant productivity. Soil texture, nutrient availability, and microbial communities can all influence soil respiration, yet our understanding of their relative importance remains limited. This study aimed to investigate how different factors-like soil texture, nutrient additions, and microbial communities-contribute to soil respiration and define their specific roles in its variability. Using a microcosm experiment with various fertilizers and two soil types (Navarra, a silty clay soil, and Saponi, a sandy soil), we measured changes in both biotic and abiotic factors. A multiple linear regression analysis revealed that, among other biotic and abiotic factors, soil clay content, soluble nitrogen levels, bacterial abundance, and alpha-diversity significantly impacted soil respiration, together accounting for over 60% of its total variance. Structural equation modeling indicated that microbial communities made the greatest contribution to respiration at 30.84%, followed by soil texture at 19.63%. Overall, biotic factors were found to play a more significant role in driving soil respiration rates compared to abiotic factors, with edaphic properties having a greater influence than fertilizer additions.

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