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《Hebei Journal of Forestry and Orchard Research》 2009-03
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Study on stand structure of Chinese pine plantations in Xishan Municipal State Forest Farm of Beijing

DIAO Jun1, LEI Xiang-dong1, GUO Hong1, LI Tao2, REN Yun-mao1, LU Yuan-chang1(1 Research Institute of Forest Resource Information Techniques,Chinese Academy of Forestry,Beijing 100091,China;2 Xishan Municipal State Forest Farm of Beijing,Beijing 100091,China)  
With emphasis on landscape and environment improvement,multi-functional forest management under the guideline of close-to-natural way has become recent developing tendency of Xishan Municipal State Forest Farm of Beijing.Since forest functions are influenced by stand structure,the characteristics of stand structure were studied in 11 Chinese pine plantation plots in the Xishan forest farm for finding improvement clues of forest service function.The results show that:(1)The average density of Chinese pine plantation is 1 069 trees/hm2;the average diameter at breast height is 13.7 cm;the average tree height is 8.6 m;and the average growing stock volume is 86.36 m3/hm2.(2)Five distribution functions were employed to describe diameter and tree height structure which were normal distribution,Weibull distribution,log-normal distribution,Gamma distribution and Beta distribution,and the normal distribution was the best one.The result was also in line with the laws of stand structure of plantation.(3)The structure of Chinese pine plantation was simple and species diversity was low.The Shannon diversity index and evenness index of tree layer,shrub layer and herb layer were 0.355,0.726,0.160 and 0.372,0.651,and 0.266,respectively.(4)The seedlings were mainly composed of Broussonetia papyrifera and Koelrenteria paniculata at all height levels.They occupied 72.2% and 10.2% of the total seedlings,respectively.This paper proposed some suggestions on close-to-nature forest management of Chinese pine plantation based on its structure characteristics.
【Fund】: 北京市科委重大科技项目“北京山区森林健康经营关键技术研究与示范”(D0706001000091);; 中央级公益性科研院所基本科研业务费专项(RIFRIGTZGZ2007008)
【CateGory Index】: S791.254
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