The Resource Distribution and Growth Status for Platycladusorientalis Plantations in Lower Mountains of Beijing

Abstract

Abstract: The analysis was done on the resource distribution and growth status for Platycladus orientalis plantationthe in lower mountain of Beijing,The results show that the area of Platycladus orientalis plantation in 7 mountainous counties of Beijing is 78400 hm² with 92.01% as young stand and 6.5%middle-age forest.young stand accounted for 72.7% of the total cumulation,20.9% middle-age forest,near mature stand and over-mature stand had less proportion of the total.In different site conditions,aspect and slope had greater impact on the growth of P.orientalis and those located in sunny slope were growing faster.The current annual volume increment and the mean volume increment were not intersected at 54 years old in different site grade.Using Forstat2.0 and SPSS18.0 analysis software,Platycladus orientalis diameter,height and volume of growth process in different site conditions were simulated,and the growth factor model established.Richards growth equation can be used to predict the growth of Platycladus orientalis plantation accurately.

Key words: arborvitae plantationthe, resource distributing, growth model, richards growth equation

CLC Number:

S758

ZHANG Yu, WANG JinZeng, WANGL li. The Resource Distribution and Growth Status for Platycladusorientalis Plantations in Lower Mountains of Beijing[J]. FOREST RESOURCES WANAGEMENT, 2011, (6): 73-78.

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