Effects of snow storm on soil available nitrogen in evergreen broad leaf forest in Wuyi Mountain

doi:10.3969/j.jssn.1000-2006.2010.03.028

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2010, Vol. 34 ›› Issue (03): 136-140.doi: 10.3969/j.jssn.1000-2006.2010.03.028

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Effects of snow storm on soil available nitrogen in evergreen broad leaf forest in Wuyi Mountain

DING Jiumin¹,², XU Hanmei¹, LIU Sheng¹, WANG Jiashe³, XU Zikun³, RUAN Honghua¹*, LIU Yushi²

1.Jiangsu Key Laboratory of Forest and Ecological Engineering, Nanjing Forestry University, Nanjing 210037, China; 2.Lianyungang Technical College, Lianyungang 222006, China; 3.Administrative Bureau of Wuyishan National Nature Reserve, Wuyishan 354315, China

Online:2010-06-29 Published:2010-06-29

Abstract

Abstract: Snow storm is a significant natural disturbance. It affects ecosystem processes by altering resource availability and heterogeneity. To understand the effect of snow storm on soil microbial biomass nitrogen and total soluble nitrogen in different soil layers (0—10 cm, 10—25 cm and 25—40 cm), an experiment was conducted in evergreen broad leaf forest in Wuyi Mountain. The results showed that the concentrations of soil microbial biomass nitrogen, soluble organic nitrogen and ammonium in the damaged evergreen broad leaf forest were significantly higher than that in the control forest except the 25—40 cm soil layer, decreased with soil depth. Soil nitrate concentrations are different between the damaged and the control evergreen broad leaf forest in three soil layers. The concentrations of soil microbial biomass nitrogen, soluble organic nitrogen and ammonium were positively correlated with the soil moisture and soil temperature significantly. The results indicated that the soil nitrogen might loss from the forest ecosystem by way of the ammonium and the soluble organic nitrogen , for the changes of soil moisture and soil temperature caused by snow storm.

CLC Number:

S714
X43

DING Jiumin,, XU Hanmei, LIU Sheng, WANG Jiashe, XU Zikun, RUAN Honghua*, LIU Yushi. Effects of snow storm on soil available nitrogen in evergreen broad leaf forest in Wuyi Mountain[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2010, 34(03): 136-140.

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Effects of snow storm on soil available nitrogen in evergreen broad leaf forest in Wuyi Mountain

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