Optimizing Managemengt Density of Larix Principis Plantation During Different Periods in Hebei Province

LIANG Wen-jun; DINGN Guo-dong; GAO Guang-lei; HE Yu; AN Yun; REN Li-na

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Optimizing Managemengt Density of Larix Principis Plantation During Different Periods in Hebei Province

- Optimizing Managemengt Density of Larix Principis Plantation During Different Periods in Hebei Province
- Bulletin of Soiland Water Conservation Vol. 30, Issue 3, Pages: 145-148(2011)
- 作者机构：
  
  北京林业大学水土保持学院,北京,100083
- 作者简介：
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- DOI：
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- Published：2011
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LIANG Wen-jun, DINGN Guo-dong, GAO Guang-lei, et al. Optimizing Managemengt Density of Larix Principis Plantation During Different Periods in Hebei Province[J]. Bulletin of Soiland Water Conservation, 2011, 30(3): 145-148.
DOI：

LIANG Wen-jun, DINGN Guo-dong, GAO Guang-lei, et al. Optimizing Managemengt Density of Larix Principis Plantation During Different Periods in Hebei Province[J]. Bulletin of Soiland Water Conservation, 2011, 30(3): 145-148. DOI：

摘要

林分密度是指林木生长过程中单位面积上的立木株数，它与林分的生长发育、稳定性、林分产量、质量等因素有着重要的联系。通过对河北省木兰国营林场不同林分密度的华北落叶松人工林进行调查，采用Hegyi单木竞争指数模型，提出了冠幅竞争指数。通过拟合实测冠幅、胸径和相对冠幅竞争指数，得出了竞争指数分别为0.2，0.4，0.6，0.8时，所对应的华北落叶松的不同经营密度值。

Abstract

Stand density is referred to as the number of trees standing in the process of tree growth on a unit area

which closely related to forest growing conditions

stability

forest yield

quality and other factors.Based on a survey on Larix principis plantations with various densities in State-owned Forest Bureau of Mulan in Hebei Province

the study proposed a competition index of crown width by adopting the Hegyi model

which uses a single wood competition index model to calculate the competition index.By fitting crown width

stem diameter at chest height and relative crown width competition index

the management density was found varying in response accordingly to the diameter

given a competition level.T he management densities of Larix principis plantation were calculated for the competition indices of 0.2

0.4

0.6

and 0.8

respectively.

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