Labile carbon input determines the direction and magnitude of the priming effect
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- 作者：Xiao-Jun Allen Liua ; b ; xj.allen.liu@gmail.com" class="auth_mail" title="E-mail the corresponding author ; ; Jingran Suna ; Rebecca L. Maua ; Brianna K. Finleya ; b ; Zacchaeus G. Compsona ; c ; Natasja van Gestela ; d ; Jamie R. Browna ; Egbert Schwartza ; b ; Paul Dijkstraa ; b ; Bruce A. Hungatea ; b
- 关键词：13C isotope tracer ; Rhizosphere priming ; Carbon sequestration ; Root exudates ; Nutrient cycling ; Soil respiration
- 刊名：Applied Soil Ecology
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：109
- 期：Complete
- 页码：7-13
- 全文大小：655 K
文摘
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Five levels of glucose applied weekly to four different soils for seven weeks.
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A positive linear relationship between glucose amounts and priming.
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Three soils showed substrate thresholds – minimum C input required to stimulate positive priming.
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Priming was not strongly related to soil microbial biomass.
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Labile C input increased priming and accelerated soil C cycling.