黄山松天然林与人工林物种多样性和林分生长规律的比较研究

Comparative Stu4y on Biodiversity and Stand Growth Regukation in Pinus taiwanensis from Different Origin

对黄山松天然林与人工林的群落学对比分析表明：黄山松林的植物种类天然林为１９～２９种，人工林仅有９～１７种；天然林下木层和草本层的多样性格数分别为２．８２４２～２．８７６３和１．７９９８～１．８３６６，而人工林分别为１．６０７３～２．０７７５和１．８３６６～１．９３９４。天然林胸径生长量比人工林低０．４７ｃｍ／ａ，树高连年生长量最高峰出现在第２０年，比人工林晚５ａ，材积在第４０年以后增长明显加快（＞０．０１ｍ３／ａ），比人工林迟２０ａ。文中以Ｓｈａｎｎｏｎ－Ｗｉｅｎｅｒ多样性指数及其均匀度、群落系数和相似度系数等指标为判别尺度，揭示了黄山松天然林与人工林之间的群落学差异。

Through the field investigation and analysis of Pinus taiwanensis communityfrom the natural forest and plantation,it can be seen that the biodiversity in the natural for-est was obviously higher than that in the plantation,and there was a difference of speciescomposition with 19～29 species in natural forest and 9～17 in plantation.Shannon-WienerDiversity Indices of the undergrowth and herb laver were 2.824 2～2.876 3 and 1. 7998～1.8366 in the natural forest,and 1.607 3～2.077 5 and 1.836 6～1.939 4 in the plantation,re-spectively. The DBH increment of the natural forest was 0.47 cm/a lower than that of theplantation.The maximum current annual increment of tree height in the natural forest hap-pened at the twentieth year,and it was 5 years later than that in plantation. The significantvolun、eincrement(>0.01 m3/a)of the natural forest occurred after the growth of 40 a,which was 20 a later than that of the plantation. Evenness Index,Coefficient of Community(CC),Coefficient of Similarity,and coenological difference of Pinus taiwanensis between themwere discussed,and tree growth process from two origins of stands was also compared andanalyzed.