厚壁毛竹材积与地上生物量的垂直分布格局  

Studies on Vertical Patterns of Volume and Biomass of Phylostachy edulis ‘Pachyloen’

作　　者：黄兰[1] 欧阳明[1] 宋庆妮[1] 陈昕[1] 杨清培[1] 

机构地区：[1]江西农业大学/江西省竹子种质资源与利用重点实验室,江西南昌330045

出　　处：《江西农业大学学报》2016年第2期332-337,共6页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家自然科学基金项目(31260120;31460077);江西省自然科学基金项目(20122BAB204019)~~

摘　　要：材积和生物量不仅反映竹类植物生长状况,而且也是林分经济产量和生态功能评价的重要指标。在测量统计竹高、胸径、壁厚、含水率等指标的基础上,分析厚壁毛竹立竹材积、地上生物量的垂直分布特征。结果表明:(1)厚壁毛竹秆材含水量随着高度的增加而降低,由秆基的50%降到秆梢的30%,而秆材密度则呈上升趋势,由基部的0.6 g/cm3增加至0.8 g/cm3;(2)50%的材积和生物量集中在竹秆下部全长的1/5,90%的材积和生物量分布于中下部竹秆全长的2/3;(3)构建了厚壁毛竹竹秆实际秆壁材积、外径材积、地上各部分生物量与胸径的关系模型。研究结果为深入了解厚壁毛竹精确取材与生物量计量提供参考。Volume and biomass not only reflect the plant growth,but also are important indicators of economic yield and ecological function of forest.Based on the measurement and analysis of the height,diameter at breast height,culm wall thickness,water content and so on,the vertical distribution of volume and biomass of Phyllostachys edulis ‘Pachyloen＇were studied. The result showed that：（ 1） the water content of culm decreased along with height,dropping from 50% at base to about 30% at tip,but the biomass density increased from 0.6 g / cm3 to 0.8 g / cm3 showing an opposite pattern;（ 2） 50% bamboo culm volume and biomass accumulated at culm base（ 1 / 5 overall length）,and almost 90% of volume and biomass distributed at the lower part of cilm（ 2 / 3 overall length）;（ 3） the relationship models between actual culm wall volume,the outer diameter volume,biomass and DBH were effective. These results provide a theoretical reference for the culm sampling and biomass measurement,also are useful for understanding of Ph.edulis ‘Pachyloen’.

关 键 词：厚壁毛竹 材积 生物量 分布格局 取样技术 

分 类 号：S795.7[农业科学—林木遗传育种]