赣南不同立地杉木人工林生产力研究

Study on Productivity of Fir Plantation in Different Sites in Southern Jiangxi

[目的]研究不同立地杉木人工林生产力差异。[方法]采用标准地法调查不同坡向、坡位、土壤肥力等级对杉木人工林生产力影响。[结果]杉木人工林在不同坡向、坡位、土壤肥力等级方面有明显差异;坡向对杉木生长有一定影响,但更多地表现为坡位上的差异;土壤肥力I级与II、III级在胸径、树高、单株材积方面均有明显差异。[结论]在发展杉木人工林时,选择造林地不但要考虑土壤肥力,同时还要考虑其他相关因子。

[Objective]The aim was to study the productivity difference of fir plantation in different sites. [Method]Sample plot method was adopted to invest the effects of different slope directions,positions and grades of soil fertility. Slope directions had an effect on the growth of fir,but the difference of slope positions was more significant. The differences in the aspects of diameter at breast height,height of tree and individual volume between Ⅰ level and Ⅱ,Ⅲlevel of soil fertility were significant. [Conclusion]Both the soil fertility and other relevant factors should be considered in selecting afforestation area for developing fir plantation.