PMID- 33370679 OWN - NLM STAT- MEDLINE DCOM- 20210203 LR - 20210203 IS - 1873-2976 (Electronic) IS - 0960-8524 (Linking) VI - 323 DP - 2021 Mar TI - Insight to nitrification during cattle manure-maize straw and biochar composting in terms of multi-variable interaction. PG - 124572 LID - S0960-8524(20)31846-0 [pii] LID - 10.1016/j.biortech.2020.124572 [doi] AB - This study investigated nitrification process during cattle manure-maize straw (CM) and biochar (CMB) composting in terms of multi-variable interaction (MVI) among environmental parameters, ammonia-oxidizing archaea (AOA) and bacteria (AOB) community structure, nitrogen-related enzymes as well as substrates using structural equation model (SEM). Results showed that adding biochar significantly reduced potential ammonia oxidation rates. SEM analysis revealed that AOB was affected by temperature and pH, which stimulated the release of urease, increased NH(4)(+)-N concentration and finally exerted influence on nitrification in CM. Temperature (0.755) and NO(2)(-)-N (-0.994) were identified as the main factors mediating nitrification in CM and CMB, respectively. Moreover, MVI analysis indicated that nitrification and denitrification occurred simultaneously. Mutual verification of SEM and quantitative analyses (RNA level) confirmed that AOB predominated nitrification. The above results indicated that nitrification could be better explained by MVI using SEM during composting. CI - Copyright (c) 2020 Elsevier Ltd. All rights reserved. FAU - Deng, Liting AU - Deng L AD - College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China. FAU - Zhao, Yan AU - Zhao Y AD - College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China. FAU - Zhang, Jizhou AU - Zhang J AD - College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China; Institute of Natural Resources and Ecology Heilongjiang Academy of Sciences, Harbin 150040, China. FAU - Bello, Ayodeji AU - Bello A AD - College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China. FAU - Sun, Yu AU - Sun Y AD - College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China. FAU - Han, Yue AU - Han Y AD - College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China. FAU - Wang, Bo AU - Wang B AD - College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China. FAU - Uzoamaka Egbeagu, Ugochi AU - Uzoamaka Egbeagu U AD - College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China. FAU - Li, Detian AU - Li D AD - College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China. FAU - Jong, Chol AU - Jong C AD - College of Agriculture, Kimjewon Agricultural University, Haeju City, Hwanghae South Province 999093, Democratic People's Republic of Korea. FAU - Xu, Xiuhong AU - Xu X AD - College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China. Electronic address: xuxiuhong@neau.edu.cn. LA - eng PT - Journal Article DEP - 20201228 PL - England TA - Bioresour Technol JT - Bioresource technology JID - 9889523 RN - 0 (Manure) RN - 0 (Soil) RN - 0 (biochar) RN - 16291-96-6 (Charcoal) RN - 7664-41-7 (Ammonia) SB - IM MH - Ammonia MH - Animals MH - Archaea MH - Cattle MH - Charcoal MH - *Composting MH - *Manure MH - Nitrification MH - Oxidation-Reduction MH - Soil MH - Soil Microbiology MH - Zea mays OTO - NOTNLM OT - Biochar OT - Cattle manure OT - Nitrification OT - Structural equation model EDAT- 2020/12/29 06:00 MHDA- 2021/02/04 06:00 CRDT- 2020/12/28 20:08 PHST- 2020/11/05 00:00 [received] PHST- 2020/12/13 00:00 [revised] PHST- 2020/12/15 00:00 [accepted] PHST- 2020/12/29 06:00 [pubmed] PHST- 2021/02/04 06:00 [medline] PHST- 2020/12/28 20:08 [entrez] AID - S0960-8524(20)31846-0 [pii] AID - 10.1016/j.biortech.2020.124572 [doi] PST - ppublish SO - Bioresour Technol. 2021 Mar;323:124572. doi: 10.1016/j.biortech.2020.124572. Epub 2020 Dec 28.