钼矿开采对球囊霉素相关土壤蛋白和土壤化学计量特性的影响
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S154.36;X144

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国家自然科学基金项目(32171620,31670499)、河南省科技攻关项目(192102110128)和SRTP项目(202010464067,2020337)资助。


Effect of Molybdenum Mining on Glomalin Related Soil Protein and Soil Stoichiometric Characteristics
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The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    以不同开采程度钼矿区根际土壤为研究对象,探索了钼矿开采对土壤球囊霉素相关土壤蛋白、化学计量特性及其两者之间关系的影响。结果表明,开采区土壤碳、氮含量分别为25.30和1.00 g/kg,显著低于恢复区和未开采区土壤的碳、氮含量。开采区土壤的碳氮比达到29.36,分别是恢复区和未开采区的2.02倍和1.30倍。恢复区和未开采区土壤的总提取球囊霉素含量为2.81和3.64 mg/g,易提取球囊霉素含量为1.22和2.02 mg/g,分别是开采区土壤总提取和易提取球囊霉素的2.08倍、2.70倍和1.97倍、3.26倍。此外,土壤碳、氮含量对丛枝菌根真菌分泌球囊霉素相关土壤蛋白有显著的影响。可见,钼矿开采主要导致了土壤碳、氮的大量流失,并对丛枝菌根真菌分泌球囊霉素相关土壤蛋白具有明显的抑制作用。

    Abstract:

    The rhizosphere soil in Mo-mining area was taken as the research object, and the influence of Mo-mining on soil glomalin, stoichiometry characteristics and their relationship were explored. The results showed that soil C and N contents in the mining area were 25.30 g/kg and 1.00 g/kg, respectively, which were significantly lower than those in the recovery and virgin areas. Soil C/N reached 29.36 in the mining area, which was 2.02 and 1.30 times of those in the recovery and virgin areas, respectively. Soil total glomalin (TG) contents were 2.81 and 3.64 mg/g in the recovery and virgin areas, respectively, while easily-extracted glomalin (EEG) contents were 1.22 and 2.02 mg/g, respectively, which were 2.08, 2.70 times and 1.97 and 3.26 times of TG and EEG in the mining area, respectively. In addition, the results of regression analysis showed that soil C and N contents had a significant effect on the secretion of glomalin-related soil protein (GRSP) by arbuscular mycorrhizal fungi. It can be seen that Mo-mining mainly has led to a large loss of soil C and N, and has a significant inhibitory effect on the secretion of GRSP by arbuscular mycorrhizal fungi.

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张梦歌,尹可敬,石兆勇,焦阳.钼矿开采对球囊霉素相关土壤蛋白和土壤化学计量特性的影响[J].土壤,2022,54(3):517-523. ZHANG Mengge, YIN Kejing, SHI Zhaoyong, JIAO Yang. Effect of Molybdenum Mining on Glomalin Related Soil Protein and Soil Stoichiometric Characteristics[J]. Soils,2022,54(3):517-523

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