Lime Application Affects Soil Cadmium Availability and Microbial Community Composition in Different Soils

文献类型： 外文期刊

第一作者： Qin, Yusheng

作者： Qin, Yusheng;Yu, Hua;Chen, Kun;Zeng, Xiangzhong;Zhou, Zijun;Guo, Song;Shangguan, Yu-xian;Wei, Yuan;Yu, Hua;He, Siyi

作者机构：

关键词： lime; phospholipid fatty acid; plant absorption; soil exchangeable cadmium

期刊名称：CLEAN-SOIL AIR WATER （ 影响因子：1.77； 五年影响因子：1.955 ）

ISSN： 1863-0650

年卷期： 2019 年 47 卷 6 期

页码：

收录情况： SCI

摘要： The effect of pH increases following lime (Ca(OH)(2)) addition on soil cadmium (Cd) availability is examined in three soils. The effect of Ca(OH)(2) addition (0-7.5 t ha(-1)) on crop Cd uptake and microbial community composition is evaluated in pot experiments with Chinese cabbage (Brassica chinensis L.) and rice (Oryza sativa L.). The soil pH increases significantly (by 1.21-2.57) after Ca(OH) 2 addition, which may be caused by both biological and chemical factors. The soil water-exchangeable Cd content decreases substantially from 11.7 to 1.4% with Ca(OH)(2) application, and the iron and manganese oxide Cd fractions increase from 24.7 to 37.5%. Ca(OH)(2) significantly reduces the exchangeable Cd in acidic soil but has limited effects in neutral soil. Ca(OH)(2) can inhibit soil Cd activity and plant Cd absorption in acid soil. With increasing Ca(OH)(2) addition, the abundance of microorganisms tends to decrease, especially in the acidic soil, whereas it tends to increase in neutral soil. Principal components analysis and redundancy analysis among the soil environmental factors and the soil microbial phospholipid fatty acids show highly variable microbial community composition among soils and treatments. Soil pH has substantial effects on soil fungi, actinomycetes, and other microorganisms, the abundance of which decreases with increasing soil pH. The continuous use of Ca(OH) 2 has no significant effects on the abundance and distribution of soil microorganisms.

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[1]Lime Application Affects Soil Cadmium Availability and Microbial Community Composition in Different Soils. Qin, Yusheng,Yu, Hua,Chen, Kun,Zeng, Xiangzhong,Zhou, Zijun,Guo, Song,Shangguan, Yu-xian,Wei, Yuan,Yu, Hua,He, Siyi. 2019

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