不同坡向和坡位毛竹杉木混交造林效果分析

Mixed Afforestation Effects Analysis of Bamboo and Fir in Different Aspects and Slope Positions

在福建省清流国有林场开展不同坡向和坡位毛竹杉木混交造林对比试验,结果表明:坡向和坡位对毛竹、杉木的生长量具有极显著影响。坡向以阴坡的毛竹、杉木生长量和立竹量最大,毛竹的平均胸径、平均高和立竹量分别达10.9 cm、13.3 m、2160株.hm-2,杉木的平均胸径、平均高、平均保存株数、间伐材+立竹蓄积量分别达15.1 cm、11.1 m、285株.hm-2、208.531 m3.hm-2;毛竹、杉木的生长量和立竹量的高低顺序依次为阴坡>半阳坡>阳坡。坡位以下坡的毛竹、杉木生长量最大,毛竹的平均胸径、平均高和立竹量分别达10.7 cm、13.2 m、2152株.hm-2;杉木的平均胸径、平均高、平均保存株数、间伐材+立竹蓄积量分别达16.6 cm、11.2m、270株.hm-2、209.211 m3.hm-2;毛竹、杉木生长量的高低顺序依次为下坡>中坡>上坡。

Through the contrast experiment of mixed forestation of bamboo and fir in the different aspects and slope positions in Qingliu National Forest Farm of Fujian Province.The results showed that: the aspect and slope position had a very significant effect on the growth of bamboo,and fir.The shady slope had the largest growth amount of bamboo,fir and the bamboo amount.The bamboo average DBH,average height and the bamboo site amount were respectively up to 10.9 cm,13.3 m,and the 2160 plants / hm2.fir average DBH,average height,average saving strains,thinning wood + site bamboo stocking were up to 15.1 cm,11.1 m,285 plants / hm2,and 208.531 m3/ hm2;the order of the growth amount and the site bamboo amount of Moso bamboo,and fir were: shady slope > semi-sunny slope > sunny.The growth amount of bamboo,and fir were largest on the below slope.The bamboo average DBH,average height and average preserved bamboo amount were up to 10.7 cm,13.2 m,and 2152 plants / hm2;fir average DBH,average height,average saving strains,thinning wood + site bamboo stocking were up to 16.6 cm,11.2m,270 plants / hm2,and 209.211 m3/ hm2;the order of the growth amount of Moso bamboo,and fir were: downhill > midhill > uphill.