CAJ | 학술논문

为了研究充填介质对中国东部高潜水位采煤塌陷区复垦土壤特征的影响，对采用煤矸石或粉煤灰作为充填介质形成的复垦土壤化学和微生物指标进行分析。结果表明，充填介质粉煤灰的存在能显著提高复垦土壤中pH值和含水率；在0~10 cm、10~20 cm、20~50 cm土壤层，采用粉煤灰形成的复垦土壤 MBC、MBN、MBC/TOC的比率高于采用煤矸石形成的复垦土壤；采用煤矸石作为充填介质形成的复垦土壤中，重金属As和Cr含量、土壤微生物碳氮比、呼吸熵等高于对照土壤和粉煤灰充填形成的复垦土壤；主成分分析表明，充填土壤中重金属含量、土壤微生物量和土壤酶活性能代表大部分复垦土壤特征。
위료연구충전개질대중국동부고잠수위채매탑함구복은토양특정적영향，대채용매안석혹분매회작위충전개질형성적복은토양화학화미생물지표진행분석。결과표명，충전개질분매회적존재능현저제고복은토양중pH치화함수솔；재0~10 cm、10~20 cm、20~50 cm토양층，채용분매회형성적복은토양 MBC、MBN、MBC/TOC적비솔고우채용매안석형성적복은토양；채용매안석작위충전개질형성적복은토양중，중금속As화Cr함량、토양미생물탄담비、호흡적등고우대조토양화분매회충전형성적복은토양；주성분분석표명，충전토양중중금속함량、토양미생물량화토양매활성능대표대부분복은토양특정。
Reclaimed mining-induced subsidence area soils (RMSs) could restore soil quality and crop productivity in coal mining area. This study was conducted to evaluate the effects of mineral-processing wastes (fly ash vs coal gangue) as backfill substrates on soil chemical and microbial properties in mining-induced subsidence area. A general higher water holding capacity (WHC) and pH had been observed in fly ash than coal gangue reconstructed soil. Soil microbial biomass C (MBC) and N (MBN), MBC/TOC (total organic carbon) ratio (qmic) were higher under the influence of the fly ash, while contents of As, Cr, C/Nbio, the basal respiration per unit of microbial biomass (QCO2) were higher under the coal gangue reconstructed mode in 0-10, 10-20, 20-50 cm layers. The microbial basal respiration was higher in 0-10, 10-20, 0-50 cm layers, while was lower in 20-50 cm layer under fly ash than that of coal gangue reconstructed mode. The lower QCO2 of fly ash mine soil suggested the lower maintenance energy requirement of the microbial community. Moreover, the contents of metals may possibly have negative implications for soil microbial and enzyme activities in reconstructed soil.