Addition of base cations increases microbial carbon use efficiency and biomass in acidic soils
Addition of base cations increases microbial carbon use efficiency and biomass in acidic soils
复制标题
添加碱性阳离子可提高酸性土壤中微生物的碳利用效率和生物量
DOI:
10.1016/j.soilbio.2021.108392
复制
发表时间:
2021
影响因子:
9.7
通讯作者:
Horn E
中科院分区:
文献类型:
--
作者:
Horn E
The leaching of base cations in acidic soils can result in calcium (Ca2+) and magnesium (Mg2+) deficiencies, which are important for microbial cell function. We aimed to determine if microbial carbon use efficiency (CUE) and microbial biomass carbon (MBC) were limited in acidic soils due to a lack of base cations. Microbial CUE across a range of agricultural soils (n= 970; pHCa3.4–7.9) treated with either deionised H2O (control) or a solution of 300 mM CaCl2+ 300 mM MgCl2(+Base cations) was determined using a14C radioisotope tracer approach. Our results showed that the addition of base cations significantly increased microbial CUE (by up to 20%) at pHCa< 4.7; which coincided with a steep increase in exchangeable acidity. Base cation addition significantly increased MBC in nil-limed soils (pHCa4.6) from 494 mg C kg−1to 769 mg C kg−1when plant residue was added, but not in limed soils (pHCa6.2). Our findings indicate that the addition of base cations to highly acidic soils can increase microbial growth, thus aiding with carbon sequestration in these agricultural soils.
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影响因子:
11.1
作者:
Groisman EA;Hollands K;Kriner MA;Lee EJ;Park SY;Pontes MH
通讯作者:
Pontes MH
DOI:
--
发表时间:
1949
期刊:
Journal of General Microbiology
影响因子:
--
作者:
M. Webb
通讯作者:
M. Webb
影响因子:
2.9
作者:
Briedis, Clever;de Moraes Sa, Joao Carlos;dos Santos, Josiane Buerkner
通讯作者:
dos Santos, Josiane Buerkner
DOI:
--
发表时间:
1948
期刊:
影响因子:
--
作者:
M. Webb
通讯作者:
M. Webb