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《Journal of Green Science and Technology》 2016-03
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Study on the Changes of DBH Growth of Quercus Mongolica From 2009 to 2014

Wang Gang;Bai Yan;Guo Yanlin;Jilin Institute of Forest Inventory and Planning;  
Within the sample area of 0.06hm2 in Jiaohe jurisdiction,the article conducts the countercheck of the 126 strains of Quercus mongolica sample trees.The average DBH of Quercus mongolica in the early stage is 13.5cm and that is 14.0cm in the later stage.The Quercus mongolica's average net growth is 0.6cm in the whole sample areas.The rule of the overall distribution of increment is that the volume of forest tree growth increases with the growth base of forest trees.The distribution of the increment of sample trees mainly concentrates in the nearly normal distribution with the peak of 0.3cm.Within the scope of growth which is between 0.2cm and 0.9cm,the sample trees account for the vast majority of the whole sample areas,in which there are 102 strains of sample trees and occupy more than 80 %in the calculated sample trees.There are 81 strains whose DBH is in the range of 8cm to 14 cm in the early stage,which is the main part of the sample areas and occupy about 64 % of the total sample trees.
【CateGory Index】: S792.186
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