Comparison of stand structure and growth between artificial and natural forests of Pinus sylvestiris var, mongolica on sandy land

编号 zgly0000303654

文献类型 期刊论文

文献题名 Comparison of stand structure and growth between artificial and natural forests of Pinus sylvestiris var, mongolica on sandy land

学科分类 220.99;林学其他学科

作者 ZHUJiao-jun  FANZhi-ping  ZENGDe-hui  JIANGFeng-qi  MATSUZAKITakeshi 

作者单位 InstituteofAppfiedEcology 

母体文献 Journal of Forestry Research;林业研究: 英文版 

年卷期 2003,14(2)

页码 103-111

年份 2003 

分类号 S791.253 

关键词 樟子松  沙地  林分结构  生长模型  立地条件  起源地  生态因子  人工林  天然林 

文摘内容 Mongolian pine (Pinus sylvestiris Linnaeus var. mongolica Litvinov) as a valuable conifer tree species has been broadly introduced to the sandy land areas in “Three North” regions (North, northwest and northeast of China), but many prob-lems occurred in the earliest Mongolian pine plantations in 7hanggutai, 7hangwu County, Liaoning Province (ZZL). In order to clarify the reason, comprehensive investigations were carried out on differences in structure characteristics, growth processes and ecological factors between artificial stands (the first plantation established in ZZL in 1950s) and natural stands (the origin forests of the tree species in Honghuaerji, Inner Mongolia) on sandy land. The results showed that variation of diameter-class distributions in artificial stands and natural stands could be described by Weibull and Normal distribution models, respectively.Chapman-Richards growth model was employed to reconstruct the growth process of Mongolian pine based on the data from field investigation and stem analysis. The ages of maximum of relative growth rate and average growth rate of DBH, height, and volume of planted trees were 11,22 years, 8, 15 years and 35, 59 years earlier than those of natural stand trees, respectively. In respect of the incremental acceleration of volume, the artificial and natural stands reached their maximum values at 14 years and 33 years respectively. The quantitative maturity ages of artificial stands and natural stands were 43 years and 102 years respectively. It was concluded that the life span of the Mongolian pine trees in natural stands was about 60 years longer than those in artificial stands. The differences mentioned above between artificial and natural Mongolian pine forests on sandy land were partially attributed to the drastic variations of ecological conditions such as latitude, temperature, precipitation, evaporation and height above sea level. Human beings'' disturbances and higher density in plantation forest may be ascribed as additional reasons. Those results may be potentially useful for the management and afforestation of Mongolian pine plantations on sandy land in arid and semi-arid areas。