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OPEN
received: 19 February 2016 accepted: 15 June 2016 Published: 30 June 2016
Nitrogen deposition may enhance soil carbon storage via change of soil respiration dynamic during a spring freeze-thaw cycle period Guoyong Yan1,2,*, Yajuan Xing1,3,*, Lijian Xu1,*, Jianyu Wang2, Wei Meng2, Qinggui Wang1,2, Jinghua Yu4, Zhi Zhang1, Zhidong Wang1, Siling Jiang1, Boqi Liu2 & Shijie Han4 As crucial terrestrial ecosystems, temperate forests play an important role in global soil carbon dioxide flux, and this process can be sensitive to atmospheric nitrogen deposition. It is often reported that the nitrogen addition induces a change in soil carbon dioxide emission in growing season. However, the important effects of interactions between nitrogen deposition and the freeze-thaw-cycle have never been investigated. Here we show nitrogen deposition delays spikes of soil respiration and weaken soil respiration. We found the nitrogen addition, time and nitrogen addition×time exerted the negative impact on the soil respiration of spring freeze-thaw periods due to delay of spikes and inhibition of soil respiration (p
OPEN
received: 19 February 2016 accepted: 15 June 2016 Published: 30 June 2016
Nitrogen deposition may enhance soil carbon storage via change of soil respiration dynamic during a spring freeze-thaw cycle period Guoyong Yan1,2,*, Yajuan Xing1,3,*, Lijian Xu1,*, Jianyu Wang2, Wei Meng2, Qinggui Wang1,2, Jinghua Yu4, Zhi Zhang1, Zhidong Wang1, Siling Jiang1, Boqi Liu2 & Shijie Han4 As crucial terrestrial ecosystems, temperate forests play an important role in global soil carbon dioxide flux, and this process can be sensitive to atmospheric nitrogen deposition. It is often reported that the nitrogen addition induces a change in soil carbon dioxide emission in growing season. However, the important effects of interactions between nitrogen deposition and the freeze-thaw-cycle have never been investigated. Here we show nitrogen deposition delays spikes of soil respiration and weaken soil respiration. We found the nitrogen addition, time and nitrogen addition×time exerted the negative impact on the soil respiration of spring freeze-thaw periods due to delay of spikes and inhibition of soil respiration (p
