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Low Carbon Loss from Long-Term Manure-Applied Soil during Abrupt Warming Is Realized through Soil and Microbiome Interplay
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2024-05-20 , DOI: 10.1021/acs.est.3c08319 Enzhao Wang 1 , Bing Yu 1 , Jiayin Zhang 1 , Songsong Gu 2 , Yunfeng Yang 3 , Ye Deng 2 , Xue Guo 4 , Buqing Wei 1 , Jingjing Bi 1 , Miaomiao Sun 1 , Huaqi Feng 1 , Alin Song 1 , Fenliang Fan 1
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2024-05-20 , DOI: 10.1021/acs.est.3c08319 Enzhao Wang 1 , Bing Yu 1 , Jiayin Zhang 1 , Songsong Gu 2 , Yunfeng Yang 3 , Ye Deng 2 , Xue Guo 4 , Buqing Wei 1 , Jingjing Bi 1 , Miaomiao Sun 1 , Huaqi Feng 1 , Alin Song 1 , Fenliang Fan 1
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Manure application is a global approach for enhancing soil organic carbon (SOC) sequestration. However, the response of SOC decomposition in manure-applied soil to abrupt warming, often occurring during diurnal temperature fluctuations, remains poorly understood. We examined the effects of long-term (23 years) continuous application of manure on SOC chemical composition, soil respiration, and microbial communities under temperature shifts (15 vs 25 °C) in the presence of plant residues. Compared to soil without fertilizer, manure application reduced SOC recalcitrance indexes (i.e., aliphaticity and aromaticity) by 17.45 and 21.77%, and also reduced temperature sensitivity (Q10) of native SOC decomposition, plant residue decomposition, and priming effect by 12.98, 15.98, and 52.83%, respectively. The relative abundances of warm-stimulated chemoheterotrophic bacteria and fungi were lower in the manure-applied soil, whereas those of chemoautotrophic Thaumarchaeota were higher. In addition, the microbial network of the manure-applied soil was more interconnected, with more negative connections with the warm-stimulated taxa than soils without fertilizer or with chemical fertilizer applied. In conclusion, our study demonstrated that the reduced loss of SOC to abrupt warming by manure application arises from C chemistry modification, less warm-stimulated microorganisms, a more complex microbial community, and the higher CO2 intercepting capability by Thaumarchaeota.
中文翻译：
通过土壤和微生物组的相互作用实现突然变暖期间长期施肥土壤的低碳损失
施肥是增强土壤有机碳（SOC）固存的全球性方法。然而，施肥土壤中的 SOC 分解对突然变暖（通常发生在昼夜温度波动期间）的响应仍然知之甚少。我们研究了在存在植物残留物的情况下，在温度变化（15 与 25 °C）下长期（23 年）连续施用粪肥对 SOC 化学成分、土壤呼吸和微生物群落的影响。与未施肥的土壤相比，施用有机肥使SOC不顺应指数（即脂肪性和芳香性）降低了17.45%和21.77%，并且还降低了原生SOC分解、植物残体分解和启动效应的温度敏感性（ Q 10 ）12.98、15.98。 、 和 52.83% 。施用粪肥的土壤中，温刺激的化能异养细菌和真菌的相对丰度较低，而化能自养奇古菌的相对丰度较高。此外，与未施用肥料或施用化肥的土壤相比，施用粪肥的土壤的微生物网络更加相互关联，与热刺激类群的负相关性更多。总之，我们的研究表明，施粪肥导致突然变暖导致的 SOC 损失减少是由于 C 化学修饰、较少的热刺激微生物、更复杂的微生物群落以及奇古菌更高的 CO 2拦截能力。
更新日期：2024-05-20
中文翻译：
通过土壤和微生物组的相互作用实现突然变暖期间长期施肥土壤的低碳损失
施肥是增强土壤有机碳（SOC）固存的全球性方法。然而，施肥土壤中的 SOC 分解对突然变暖（通常发生在昼夜温度波动期间）的响应仍然知之甚少。我们研究了在存在植物残留物的情况下，在温度变化（15 与 25 °C）下长期（23 年）连续施用粪肥对 SOC 化学成分、土壤呼吸和微生物群落的影响。与未施肥的土壤相比，施用有机肥使SOC不顺应指数（即脂肪性和芳香性）降低了17.45%和21.77%，并且还降低了原生SOC分解、植物残体分解和启动效应的温度敏感性（ Q 10 ）12.98、15.98。 、 和 52.83% 。施用粪肥的土壤中，温刺激的化能异养细菌和真菌的相对丰度较低，而化能自养奇古菌的相对丰度较高。此外，与未施用肥料或施用化肥的土壤相比，施用粪肥的土壤的微生物网络更加相互关联，与热刺激类群的负相关性更多。总之，我们的研究表明，施粪肥导致突然变暖导致的 SOC 损失减少是由于 C 化学修饰、较少的热刺激微生物、更复杂的微生物群落以及奇古菌更高的 CO 2拦截能力。
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