Conservation farming prefers restoring plant lignin and microbial necromass in the particulate to mineral-associated organic matter
文献类型： 外文期刊
第一作者： Ma, Lixiao
作者： Ma, Lixiao;Jiao, Ziwei;Ma, Lixiao;Wang, Xiao;Jin, Xiaoying;Du, Zhangliu;Fang, Yunying;Fang, Yunying;Wang, Lihong;Gao, Qiqi;Li, Yuyi
作者机构：
关键词： conservation tillage; free lipids; lignin phenols; microbial necromass; particulate organic matter
期刊名称：SOIL USE AND MANAGEMENT （ 影响因子：3.7； 五年影响因子：4.0 ）
ISSN： 0266-0032
年卷期： 2025 年 41 卷 2 期
页码：
收录情况： SCI
摘要：
Conservation farming has been recognized as effective climate strategies for enhancing soil organic carbon (SOC) sequestration and soil health. Yet, the extent to which this alternative agriculture influences SOC characteristics (i.e., biomolecules, lability and sources) in the soil matrix remains elusive. Employing three biomarkers - lipids, lignin and microbial necromass - we differentiated the composition, degradation and sources of two functional forms of organic matter: particulate (POM) and mineral-associated fractions (MAOM) in response to 20-year conservation practices in North China. Three treatments included: conventional tillage (CT), rotary tillage (RT), and no-till (NT). Topsoil samples (0-5 cm) were subjected to physical and chemical fractionation. The SOC content in POM was 40.8% higher in RT and 59.2% higher in NT compared with CT, whereas the increased SOC in MAOM was limited (by 1.3% and 8.9%). NT (cf. CT) increased short-chain lipids (
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