摘要
[目的]研究坡向对西南桦人工林造林的影响。[方法]在造林试验地内海拔约450、550和600 m处的阳坡、半阳坡、阴坡和半阴坡设置调查样地,重复3次,进行西南桦人工造林试验以评价坡向对西南桦生长的影响。[结果]坡向对西南桦高、径、材积生长均有显著影响。不同坡向平均树高从高到低排序为阴坡、半阴坡、半阳坡、阳坡,平均树高阴坡比阳坡高7.9%;不同坡向平均胸径从高到低排序为阴坡、半阴坡与半阳坡、阳坡,平均胸径阴坡比阳坡大11.1%;不同坡向平均单株材积从高到低排序为阴坡、半阴坡、半阳坡、阳坡,平均单株材积阴坡比阳坡多33.0%。[结论]坡向对西南桦的生长影响显著,阴坡西南桦的生长状况优于阳坡。
[ Objective ] The aim was to research the effect of exposure on the afforestation of man-made forest of Betula alnoides. [ Method ] The investigated plots of 3 repeats were set in sunny slope, half-sunny slope, shady slope and half-shady slope at elevations of 450,550 and 600 m re- sp. in experimental afforestation field and the afforestation experiment of man-made forest of B. alnoides was performed for evaluating the effect of exposure on the growth of B. alnoides. [ Result]All the test exposures showed significant effect on the height, diameter and capacity growth of B. alnoides. The order of average tree heights of different exposures was ： shady slope 〉 half-shady slope 〉 half-sunny slope 〉 sunny slope and the average tree height of shady slope was 7.9% higher than that of sunny slope. The order of average diameters at breast height of different expo- sures was： shady slope 〉 half-shady slope = half-sunny slope 〉 sunny slope and the average diameters at breast height of shady slope was 11.1% larger than that of sunny slope. The order of average single-plant capacities of different exposures was： shady slope 〉 half-shady slope 〉 half-sunny slope 〉 sunny slope and the average single-plant capacities of shady slope was 33.0% more than that of sunny slope. [ Conclusion] The effect of exposure on the growth of B. alnoides was significant and the growth of B. alnoides of shady slope was better than that of sunny slope.
出处
《安徽农业科学》
CAS
北大核心
2011年第18期10858-10859,10984,共3页
Journal of Anhui Agricultural Sciences
基金
广西壮族自治区林业厅"十五"科技项目"西南桦人工林丰产技术研究与示范"[桂林科字(2001)第80号]
关键词
西南桦
坡向
造林
试验
Betula alnoides
Exposure
Afforestation
Experiment
