Volume 29 Issue 3
May  2012
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YANG Zi-qing, CHEN Ping-liu, LIU Jian, YU Kun-yong, LIAO Xiao-li, YOU Hao-chen, GONG Cong-hong. Spatio-temporal variation of distribution patterns in Cunninghamia lanceolata plantations[J]. Journal of Zhejiang A&F University, 2012, 29(3): 374-382. doi: 10.11833/j.issn.2095-0756.2012.03.008
Citation: YANG Zi-qing, CHEN Ping-liu, LIU Jian, YU Kun-yong, LIAO Xiao-li, YOU Hao-chen, GONG Cong-hong. Spatio-temporal variation of distribution patterns in Cunninghamia lanceolata plantations[J]. Journal of Zhejiang A&F University, 2012, 29(3): 374-382. doi: 10.11833/j.issn.2095-0756.2012.03.008

Spatio-temporal variation of distribution patterns in Cunninghamia lanceolata plantations

doi: 10.11833/j.issn.2095-0756.2012.03.008
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  • Corresponding author: LIU Jian
  • Received Date: 2011-09-21
  • Rev Recd Date: 2011-12-16
  • Publish Date: 2012-06-20
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Spatio-temporal variation of distribution patterns in Cunninghamia lanceolata plantations

doi: 10.11833/j.issn.2095-0756.2012.03.008
    Corresponding author: LIU Jian

Abstract: To aid in management of Cunninghamia lanceolata,the main timber species in southern China,its variation of spatial distribution pattern was analyzed. Three permanent plots of C. lanceolata plantations with approximately the same site conditions,set by China continuous forest inventory in Shunchang,Fujian,were selected. C. lanceolata growth was divided into two stages: young trees (5 cm diameter at breast height (DBH) < 10 cm) and mature trees (DBH 10 cm). The DBH and coordinates of every tree (DBH 5 cm) in the permanent plots were recorded in 2003 and 2008. The function L(r),improvement of Ripleys K(r),the pair-correlation function g(r),and the uniform angle index (Wi) were used to analyze the spatio-temporal variation of spatial distribution patterns. The three permanent plots had mean uniform angle index (W) between 0.494-0.578 in low altitudes,0.465-0.477 in medium altitudes,and 0.426-0.601 in high altitudes. Results showed that altitude did not affect the spatial distribution pattern. The L(r) and g(r) function curves of mature trees were generally lower than young trees,i.e. tend to be more random or uniform distribution. So regardless of the initial distribution of young or mature trees,with the passage of time,there was a tendency for the aggregated distribution to change to a random distribution,and a random distribution to change to a uniform distribution.[Ch,3 fig. 2 tab. 24 ref.]

YANG Zi-qing, CHEN Ping-liu, LIU Jian, YU Kun-yong, LIAO Xiao-li, YOU Hao-chen, GONG Cong-hong. Spatio-temporal variation of distribution patterns in Cunninghamia lanceolata plantations[J]. Journal of Zhejiang A&F University, 2012, 29(3): 374-382. doi: 10.11833/j.issn.2095-0756.2012.03.008
Citation: YANG Zi-qing, CHEN Ping-liu, LIU Jian, YU Kun-yong, LIAO Xiao-li, YOU Hao-chen, GONG Cong-hong. Spatio-temporal variation of distribution patterns in Cunninghamia lanceolata plantations[J]. Journal of Zhejiang A&F University, 2012, 29(3): 374-382. doi: 10.11833/j.issn.2095-0756.2012.03.008

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