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JIANG Zong-kai. Dynamics of nitrogen and phosphorus standing stocks in fine roots of Fokienia hodginsii and Cunninghamia lanceolata plantations[J]. Journal of Zhejiang A&F University, 2007, 24(1): 33-38.
Citation: JIANG Zong-kai. Dynamics of nitrogen and phosphorus standing stocks in fine roots of Fokienia hodginsii and Cunninghamia lanceolata plantations[J]. Journal of Zhejiang A&F University, 2007, 24(1): 33-38.

Dynamics of nitrogen and phosphorus standing stocks in fine roots of Fokienia hodginsii and Cunninghamia lanceolata plantations

  • Received Date: 2006-01-21
  • Rev Recd Date: 2006-05-29
  • Publish Date: 2007-02-20
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Dynamics of nitrogen and phosphorus standing stocks in fine roots of Fokienia hodginsii and Cunninghamia lanceolata plantations

Abstract: Levels of nitrogen(N)and phosphorus(P)in fine roots of two coniferous plantations(Fokienia hodginsii and Cunninghamia lanceolata were studied in 1999 in Sanming, Fujian, China. The results indicated that in fine living roots of F. hodginsii, the meanN level was 12.948 kghm- 2 and Pwas 1.692 kghm- 2, for an N of 1.8 timesmore and P of 1.9 timesmore than C. lanceolata. For dead fine roots of F. hodginsii, mean Nwas 10.410 kghm- 2 and P was 1.192 kghm- 2 with N 1.6 times higher and P 1.5 times higher than C.lanceolata. For both F. hodginsii and C. lanceolata, rootswith a diameter 0.5 mmwere the main source for root nutrient recycling. Like C. lanceolata, the curve of N and P levels changing in the fine living roots of F.hodginsii over study periodwere double-peaked. In the fine dead roots of F. hodginsii over time, the curve of N level dynamic was single-peaked and that of Pwas reverse-S shaped, whereas both of N and P for C. lanceolata were reverse-S shaped.[Ch, 2 fig. 4 tab. 24 ref.]

JIANG Zong-kai. Dynamics of nitrogen and phosphorus standing stocks in fine roots of Fokienia hodginsii and Cunninghamia lanceolata plantations[J]. Journal of Zhejiang A&F University, 2007, 24(1): 33-38.
Citation: JIANG Zong-kai. Dynamics of nitrogen and phosphorus standing stocks in fine roots of Fokienia hodginsii and Cunninghamia lanceolata plantations[J]. Journal of Zhejiang A&F University, 2007, 24(1): 33-38.

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