Effects of soil acidification on humus, electric charge, and bacterial community diversity

被引：3

作者：

Liu, Chang ^{[1
]}

Shang, Xiaoxuan ^{[1
]}

Wang, Jihong ^{[1
]}

Zhao, Shengchen ^{[1
]}

机构：

[1] Agr Univ, Coll Resource & Environm, Dept Jilin, Changchun 130118, Jilin, Peoples R China

来源：

ENVIRONMENTAL MONITORING AND ASSESSMENT | 2024年 / 196卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Soil acidification; Humus; Electric charge; Soil microbial diversity; VARIABLE-CHARGE; PERMANENT;

D O I：

10.1007/s10661-024-13289-4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Soil acidification due to the long-term application of nitrogenous fertilizers and the consequent impact on crop growth have been frequently reported. The effects of acidification on soil humus, charge, and microbial communities need to be studied. In this experiment, fertilizer drenching was used to simulate the effects of multiple years of fertilizer application on the black soil. The results showed that 25 years of soil acidification treatment resulted in a decrease of 8.97% in the content of stable humus and led to a decrease of 58% and 51.18% in the humic acid (HA) content and degree of humification (PQ) value in stable humus, respectively. In addition, soil acidification leads to a significant decrease in total negative charge (CEC8.2) and variable negative charge (CECv), with both decreasing by 63.28% and 88.67%, respectively, at 25 years. Acidification treatments affected both soil microbial community abundance and diversity, with a significant decrease in Acidobacteriota and Gemmatimonadota abundance and an increase in Bacteroidia abundance and Acidobacteriota abundance at 25 years.

引用

页数：15

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