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[Objective]To reveal the effects of exogenous amendments on soil amino sugars in the Northeast Black Soil Region and quantify the relative importance of environmental drivers. [Methods]Data from 26 papers(2005-2024) were integrated. Meta-analysis was employed to quantify responses of total amino sugars, glucosamine(fungal-derived), galactosamine, and muramic acid(bacterialderived) to chemical fertilizer, manure, straw, and biochar. Subgroup analysis and random-forest models were used to identify key environmental drivers. [Results]Exogenous amendments significantly increased total amino sugars(19%), glucosamine(20%),galactosamine(16%), and muramic acid(17%). Manure showed the strongest effect, followed by straw and biochar. Chemical fertilizer alone did not significantly promote total amino sugars, glucosamine, or galactosamine, and biochar had no significant effect on muramic acid. Maximum increases in total amino sugars occurred under low mean annual temperature(≤5 ℃, 25%), long-term fertilization(>10 years, 27%), and black soil(27%). Mean annual temperature mainly regulated total amino sugars, glucosamine and muramic acid. Galactosamine was governed by fertilization duration. Soil type affected fungal-derived and total amino sugars but had only a weak influence on muramic acid. Initial soil pH and total nitrogen(TN) markedly modulated all fractions. Alkaline soils(pH>7.5) obtained the highest increments(31%-48%). Medium-fertility soils(SOC 10-20 g·kg-1, TN 1-2 g·kg-1) favored amino sugar synthesis. Random-forest outputs indicated that mean annual temperature was the primary driver for total amino sugars, and initial soil pH served as the core regulator for glucosamine and muramic acid, and fertilization duration was the most critical factor for galactosamine. [Conclusions]Compared with chemical fertilizer alone, organic amendments(manure, straw, biochar) facilitate microbial-residue carbon sequestration in Northeast black soils, with manure delivering the best performance. Low temperature,alkaline soil, and medium soil fertility maximize amino sugar accumulation. Mean annual temperature, soil pH, and fertilization duration represent the key driving factors.
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Basic Information:
China Classification Code:S153
Citation Information:
[1]YANG Jinfeng,LI Mingxia,PAN Yuting ,et al.A Meta-analysis of the Effects of Different Exogenous Amendments on Soil Amino Sugars in the Northeast China Black soil Region[J].Journal of Shenyang Agricultural University,2026,57(05):1-12.
Fund Information:
国家重点研发计划项目（2022YFD1500101）; 国家自然科学基金项目（32072679）
2026-10-15
2026-10-15