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Impacts of low-intensity prescribed fire on microbial and chemical soil properties in a Quercus frainetto forest

查看全文 作　　者：Serdar [1]Akburak;Yowhan [2]Son;Ender [1]Makineci;Meric [3]Cakir 高影响力作者 机构地区：[1]Faculty of Forestry,Soil Science and Ecology Department,Istanbul University,34473 Bahcekoy,Sariyer,Istanbul,Turkey;[2]Division of Environmental Science and Ecological Engineering,Korea University,145 Anam-ro,Seongbuk-gu,Seoul 136-713,Korea;[3]Faculty of Forestry,Soil Science and Ecology Department,Cankiri Karatekin University,18100 Cankkiri,Turkey高影响力机构 出　　处：《Journal of Forestry Research》索引2018年第29卷第3期,共10页高影响力期刊 基　　金：supported by Scientific Research Projects Coordination Unit of Istanbul University,Project Number:International Research Projects:IRP-27803,as a part of an international collaboration between Istanbul University,IstanbulTurkey and Korea University,Seoul-Korea 摘　　要：Prescribed fire is a common economical and effective forestry practice, and therefore it is important to understand the effects of fire on soil properties for better soil management. We investigated the impacts of low-intensity prescribed fire on the microbial and chemical properties of the top soil in a Hungarian oak(Quercus frainetto Ten.) forest. The research focused on microbial soil parameters(microbial soil respiration(RSM), soil microbial biomass carbon(Cmic) and metabolic quotient(qCO_2) and chemical topsoil properties(soil acidity(pH),electrical conductivity(EC), carbon(C), nitrogen(N), C/N ratio and exchangeable cations). Mean annual comparisons show significant differences in four parameters(C/N ratio,soil pH, Cmic and qCO_2) while monthly comparisons do not reveal any significant differences. Soil pH increased slightly in the burned plots and had a significantly positive correlation with exchangeable cations Mg, Ca, Mn and K.The mean annual C/N ratio was significantly higher in the burned plots(28.5:1) than in the control plots(27.0:1). The mean annual Cmic(0.6 mg g^(-1)) was significantly lower although qCO_2(2.5 lg CO_2–C mg Cmic h^(-1)) was significantly higher, likely resulting from the microbial response to fire-induced environmental stress. Low-intensity prescribed fire caused very short-lived changes. The annual mean values of C/N ratio, pH, Cmic and qCO_2 showed significant differences. 关 键 词：C/N Exchangeable CATIONS MICROBIAL biomass carbon qCO2 Soil pH
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