Soil physicochemical and microbial drivers of temperature sensitivity of soil organic matter decomposition under boreal forests

作     者：Beata KLIMEK Marcin CHODAK Matgorzata JAZWA Hamed AZARBAD Maria NIKLINSKA Beata KLIMEK;Marcin CHODAK;Ma(l)tgorzata JA(Z)WA;Hamed AZARBAD;Maria NIKLI(N)SKA

作者机构：Institute of Environmental SciencesFaculty of BiologyJagiellonian UniversityGronostajowa 7Krakow 30-387(Poland) Department of Management and Protection of EnvironmentAGH University of Science and TechnologyMickiewicza 30Krakow 30-059(Poland) Institute of BiologyFaculty of Natural Sciences and TechnologyUniversity of OpoleOleska 22Opole 45-052(Poland) 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：2020年第30卷第4期

页      面：528-534页

核心收录：

学科分类：0818[工学-地质资源与地质工程] 09[农学] 0903[农学-农业资源与环境] 0901[农学-作物学] 090301[农学-土壤学] 

基　　金：The research received funding from the European Union Seventh Framework Programme(FP7/2007-2013)under grant agreement No.262693(INTERACT) by Jagiel-lonian University,Poland(subsidy DS/WBiNoZ/INoS/758) 

主　　题：CoO2 evolution global warming microbial functional diversity MicroResp^TM Q10 metabolic coefficient 

摘      要：Soil organic matter(SOM)in boreal forests is an important carbon *** aim of this study was to assess and to detect factors controlling the temperature sensitivity of SOM *** were collected from Scots pine,Norway spruce,silver birch,and mixed forests(O horizon)in northern Finland,and their basal respiration rates at five different temperatures(from 4 to 28℃)were *** Q10 values,showing the respiration rate changes with a 10℃ increase,were calculated using a Gaussian function and were based on temperature-dependent *** soil physicochemical parameters were measured,and the functional diversity of the soil microbial communities was assessed using the MicroResp?*** temperature sensitivity of SOM decomposition differed under the studied forest *** forests had the highest temperature sensitivity for SOM decomposition at the low temperature range(0–12℃).Within this temperature range,the Q10 values were positively correlated with the microbial functional diversity index(H’mic)and the soil C-to-P *** suggested that the metabolic abilities of the soil microbial communities and the soil nutrient content were important controls of temperature sensitivity in taiga soils.