低山丘陵区坡向、坡位对泡桐幼龄林生长的影响  

Influence of Aspect and Position of Slope on Growth of Young Paulownia Plantations in Lower Hilly Region

作　　者：张顺平[1] 乔杰[2] 王保平[2] 孙向阳[1] 

机构地区：[1]北京林业大学,北京100083 [2]国家林业局泡桐研究开发中心

出　　处：《东北林业大学学报》2013年第12期1-4,共4页Journal of Northeast Forestry University

基　　金：国家林业公益性行业科研专项(201204705)

摘　　要：在湖北省咸宁市浅山丘陵区,为选择适宜泡桐生长的立地条件,对9501泡桐无性系幼林在不同坡向和坡位的生长指标和质量指标进行测定、比较和分析。结果表明:①坡向、坡位及其二者的交互作用对泡桐各项生长指标和质量指标的影响多达显著及以上程度。②选择其中11项指标的标准化数据进行聚类分析,可将12个坡向坡位划分为3类,第1类为东坡中部和东坡下部;第2类为北坡上部、北坡中部、北坡下部、南坡中部、南坡下部和西坡下部;第3类为南坡上部、东坡上部、西坡上部、西坡中部。③在此3类坡向坡位中,第1类苗的干部分各生长指标均为最高,苗干削度和接干削度均最小,为最适宜的坡向坡位;第2类的各项指标总体上明显优于第3类坡向坡位,为适宜的坡向坡位;第3类的各项生长指标和质量指标整体表现最差,不适应泡桐的生长。An experiment was conducted to study the suitable site conditions,measure,compare and analyze the growth indicator and quality indicator of the Paulownia clone 9501 Young forest on four slope aspect,three slope position,in Paulownia test base,Xianning of Hubei Province. All the growth indicators and the quality indicators of Paulownia are significant for slope aspect,slope position and interaction between slope aspect and position. By selecting the standardized data of 11 indicators for clustering analysis,the results are divided into three categories,the first category including lower part and middle part of east slope,the second category including the whole north slope,middle part and lower part of south slope and lower part of west slope,and the third category including upper part of southern slope,upper part of east slope,upper and middle part of east slope. Between three categories,the first category is the most suitable slope aspect and slope position, because its growth indexes of seedling are the highest,taper of trunk extension and taper of seeding are the smallest. The second category is much better than the third category,and can be considered as suitable slope aspect and slope position. The third category is not suitable for the growth of Paulownia,because the growth indicators and quality indicators of this category were least.

关 键 词：泡桐 幼龄林生长 坡向 坡位 聚类分析 

分 类 号：S181[农业科学—农业基础科学]