Study on Soil Organic Matter and Nitrogen of Typical Forest Communities in Shanxi Taiyue Mountains

Abstract

Abstract: This paper made an analysis on basic condition of soil organic matter(OM), total nitrogen(TN) and alkaline nitrogen(AN) in 7 typical forestcommunites in Taiyue Mountains, The results showed that among different forest stands, the OM contents in soil humus horizon(SHH) and soil illuvial horizon(SIH)were both highest in the pine oak mixed forest stand, which were 4.908g/kg and3.528g/kg respectively.The minimum value of OM content in SHH occured in pineforest stand was 3.959g/kg, while that in SIH occured in platyphylla forest stand was 1.779g/kg.The TN content in SHH was highest in the white birch foreststand, and the value was 0.368%, while the minmum value was 0.176%, which occurred in the oak stand.The AN content in SHH was highest in the North China larch forest stand, and the value was 292.191mg/kg, while the minmum value was 167.725 mg/kg that occurred in in the pine forest stand.The TN content in SIH washighest in the pine oak mixed forest stand, and the value was 0.277%, while that inthe pine forest stand was 0.094%, which showed the lowest level.The AN content in SIH was highest in the Davidiana forest stand, and the value was 200.183mg/kg, while that in the pine oak mixed forest stand was 49.151mg/kg, which showed the lowest level.Among all types of forest sands, the contents of OM, TN, ANwere all higher in the upper soil than the lower one.The OM contents in both SHH and SIH showed no significant difference(P>0.05), while theTN, AN contents showed significant difference(P<0.01) among different forest types.

Key words: organic matter, total nitrogen, available nitrogen, Humus horizon, Illuvial horizon, Taiyue Mountain

CLC Number:

ZHU Jankui, HAN Hairong, YI Lita, LIU Li. Study on Soil Organic Matter and Nitrogen of Typical Forest Communities in Shanxi Taiyue Mountains[J]. FOREST RESOURCES WANAGEMENT, 2009, (2): 70-75.

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