公路沿线一重山景观树种与杉木混交生长效益研究

Study on selecting landscaping tree species in a mountain along avhighway and economic benefits of fir mixed forests

该文以尤溪县境内公路沿线一重山为例,调查了火力楠、米老排、木荷和闽粤栲等4种景观树种与杉木混交造林,结果显示:11年生混交林中不同阔叶树种平均树高、平均胸径、平均单株材积和单位面积蓄积生长量差异均达极显著水平,而杉木各生长指标无显著差异;混交林总蓄积量的高低排序为:木荷×杉木>米老排×杉木>火力楠×杉木>闽粤栲×杉木,表明公路沿线一重山造林中,木荷×杉木及米老排×杉木混交模式的生长效益较好。

Taking a mountain along a highway in Youxi county as a object of study, the author conducts a research on the tree species of Michelia macelurei, mytilaria laosensis,schimacrenata, Mingyue kawakamii and mixed fir forests. The research results are as follows： 11 years＇ mixed forests have remarkable discrepancy on their average tree height, DBH, volume of per plant and volume of unit area, while there is no substantial divergence on the growth indexes of fir; the sequence of total volume of mixed forest is （from high to low）： mytilaria laosensis＊fir 〉schimacrenata＊fir 〉 Michelia macelurei＊fir 〉 Mingyue kawakamii＊fir. The sequence demonstrates： mytilaria laosensis＊firx and schimacrenata＊fir have better economic benefits than those of the others＇.