华北落叶松二年生苗年生长格局对光照变化的响应  

Effects of Light on Grouth Pattern of Larix Principis-cupprechitii

作　　者：张芸香[1] 韩有志[1] 郭晋平[1] 呼起跃[2] 

机构地区：[1]山西农业大学林学院,山西太谷030801 [2]山西省水利厅水保局,山西太原030002

出　　处：《山西农业大学学报（自然科学版）》2007年第2期113-115,共3页Journal of Shanxi Agricultural University(Natural Science Edition)

基　　金：国家自然科学基金(30470316);山西省自然科学基金(2006011084)

摘　　要：以华北落叶松为研究对象,研究了不同光照条件下幼苗生物生长速度及不同光照条件对苗木生物量的动态影响。结果表明:不同的光照条件对苗木的地上生物量、地下生物量以及总生物量有显著的影响,光照条件越好,苗木前期生长速度越快。苗木地上部分生长量也越高,较强的光照条件可促进苗木根系的生长,光照不足,会影响苗木根系的生长,且地上部分的生长与根系的生长呈交错的节律关系。This paper has the Larix seedlings as the research object, the growth in different light levels was studied, its dynamic influence on biomass was also studied. The result shows., the different light levels have the significant influence on the biomass above the ground, under the ground and the total biomass. The better the light is, the faster the growth speed is in the early stage of seedlings growth, the higher the biomass above the ground is . The intenser light can accelerate the growth of roots, while the poor light can decrease its growth. It is also found that the seedlings growth above the ground has the interlaced rhythm with the growth of roots.

关 键 词：华北落叶松 幼苗 地上生物量 地下生物量 动态 

分 类 号：S791.22[农业科学—林木遗传育种]