SOIL MICROBIAL BIOMASS AND MICROBIAL ACTIVITY IN SOILS TREATED WITH HEAVY-METAL CONTAMINATED SEWAGE-SLUDGE
SOIL MICROBIAL BIOMASS AND MICROBIAL ACTIVITY IN SOILS TREATED WITH HEAVY-METAL CONTAMINATED SEWAGE-SLUDGE
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DOI：
10.1016/0038-0717(94)90144-9
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发表时间：
1994-09-01
影响因子：
9.7
通讯作者：
REBER, HH
中科院分区：
文献类型：
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作者：
FLIESSBACH, A;MARTENS, R;REBER, HH
土壤微生物量碳(C(MIC))和呼吸作用的测量来自两个长期的田间试验和最近的城市污泥应用。在从污水处理厂接收到并在额外的金属污染之后使用中度污染的污泥。总体来说，低金属污泥对土壤微生物活性和C(MIC)有一定的促进作用。土壤重金属污染程度较高，导致土壤中C(MIC)含量显著下降。当使用低金属污泥时，C(Mic)/C(Org)比甚至有所下降。土壤呼吸，尤其是单位生物量的呼吸量(QCO2)随重金属含量的增加而增加。真菌对土壤呼吸的贡献率随之增加。从这些结果来看，qCO2似乎是重金属对土壤微生物区系产生影响的一个敏感指标。
Soil microbial biomass carbon (C(mic)) and respiration were measured in soils from two long-term field experiments with recent sewage sludge applications. A moderately contaminated sludge was applied as received from the sewage treatment plant and after additional metal contamination. Generally, the low metal sludge had beneficial effects on C(mic) and on the soil microbial activity. Higher heavy metal contamination of soils resulted in a substantial decrease in C(mic). The ratio C(mic)/C(org) even decreased when low metal sludge was applied. Soil respiration and especially the respiration per unit biomass (qCO2) increased with increasing amounts of heavy metals. Concomitantly the contribution of fungi to soil respiration increased. Judging from these results the qCO2 appears to be a sensitive indicator of effects that are resulting from the effects of heavy metals on the soil microflora.