摘要
根据管道模型理论,以年轮为基本研究单位,利用生物染色剂染色试验对长白落叶松的水分输导模式进行研究发现:长白落叶松不同年轮的水分纵向输导能力差异很大;以最近3年生长的年轮输导能力最强,年轮间水分横向输导现象不明显。纵向输导在同一年轮内呈明显的管道状输导。依据胸高处最近5个年轮的横断面积建立了长白落叶松叶生物量估测模型,复相关系数达到了0.97。
Based on experiment of biological coloration and the theory of pipe mode, the model of water transpiration for Larix olgensis was studied by using the growth ring as basic unit. The results showed that the capacities of water transport upward for different growth rings were obviously different, and the highest occurred within three - year - old growth ring near the outside bark. The horizontal transport of water between growth rings was not obvious. In the same growth ring of stem, water transport upward showed in the pattern of pipe, At 1.3 meter height, an estimation model of biomass for L. olgensis was developed according to 5 cross - sectional areas of growth rings with the relative coefficient reaching to 0.97.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2005年第5期35-37,共3页
Journal of Northeast Forestry University
基金
吉林省教育厅基金项目(20030012)。
关键词
管道模型
年轮
生物量
染色试验
Pipe model
Growth ring
Biomass
Coloration experiment
