作　　者： ; ; ; ; ; ;

机构地区： 广西生态工程职业技术学院

出　　处： 《安徽农业科学》 2011年第18期10858-10859,10984,共3页

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.

关 键 词： 西南桦 坡向 造林 试验

领　　域： [农业科学] [农业科学]