Carbon and nitrogen storage under different plantations in subtropical south China

Weixia, 王卫霞 Wang; Zuomin, 史作民 Shi; Da, 罗达 Luo; Shirong, 刘世荣 Liu; Lihua, 卢立华 Lu; Angang, 明安刚 Ming; Haolong, 于浩龙 Yu

doi:10.5846/stxb201207040935

Cited by 7 publications

(1 citation statement)

References 3 publications

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“…Five intact soil cores were randomly taken from the top soil layer using a soil corer (5.6 cm diameter, 4.1 cm height) at each plot after removing the litter (Kiese et al 2008, Wang et al 2010b, Wang et al 2013. The intact soil cores were analyzed for gross nitrification and soil respiration rates using the BaPS technique (UMS GmbH Inc., Germany -Ingwersen et al 1999, Breuer et al 2002.…”

Section: Soil Samplingmentioning

confidence: 99%

Seasonal dynamics of soil respiration and nitrification in three subtropical plantations in southern China

Wang¹,

Cheng²,

Shi³

et al. 2016

iForest

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Numerous studies have documented that soil respiration and nitrogen cycling show a distinct seasonal dependence regulated by environmental factors (e.g., soil temperature and soil water content). The mechanisms controlling the seasonal dependence of these two key ecosystem processes have rarely been linked to both soil microbial community and soil environmental factors. Here, we present results on the seasonal patterns of soil respiration and gross nitrification rates in three subtropical plantations of Pinus massoniana, Castanopsis hystrix and Erythrophleum fordii over a period of 11 months. Turnover rates were measured with the Barometric Process Separation technique (BaPS). We elucidated how soil respiration and gross nitrification are controlled by the soil microbial community and by soil environmental factors. Soil respiration and gross nitrification showed strong seasonal dynamics, although no significant differences were observed among plantations. The turnover rates were the highest during the wet season and the lowest during the dry season. Microbial biomass, total phospholipid fatty acids (PLFAs), fungal PLFAs and bacterial PLFAs peaked during the dry season. Both soil respiration and gross nitrification rates were positively correlated with soil temperature and soil water content. Microbial biomass decreased with increasing turnover rates. Our findings highlight that carbon and nitrogen turnover rates were mostly controlled by soil temperature and soil water content.

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