侧柏植株体积、叶面积的量测及其与株高、冠幅的关系  

Measurements of Plant Volume and Leaf Area of Platycladus Orientalis and Their Relations to Plant Height and Crown Width

作　　者：郑翠娟[1] 王勇[1] 于金丹[1] 戴立峰 白玲晓[1] 

机构地区：[1]内蒙古师范大学内蒙古节水农业工程研究中心,内蒙古呼和浩特010022 [2]乌兰察布市水土保持工作站,内蒙古乌兰察布012000

出　　处：《水土保持通报》2014年第2期182-185,191,共5页Bulletin of Soil and Water Conservation

基　　金：国家自然科学基金项目“基于绿量的北方城市常见绿篱树木耗水-景观-生态功能模型研究”(50969006);内蒙古应用技术研究与开发资金项目(20110524)

摘　　要：为了研究侧柏(Ptadtyctadus orientates)植株体积、叶面积的量测,及与株高、冠幅、叶面积指数间的定量关系,进行了相关的盆栽试验。试验结果表明,随长方体、圆柱体体积的增大,实体体积均呈线性极显著正相关。随冠幅的增大,实体体积、总叶面积分别呈线性(R=0.572)和开口向下的抛物线(R=0.450)规律变化。当冠幅73cm,圆柱体侧面积0.546m2,圆柱体横截面积0.329m2时,总叶面积对应达最大值,分别为3 581,3 639,3 523cm2。随总叶面积的增大,叶体积、枝体积、实体体积呈开口向下的抛物线规律变化,均呈极显著相关关系。随叶体积的增大,叶面积指数呈开口向下的抛物线(R=0.742)规律变化,叶体积338cm3时,达最大值6.1。A pot experiment was conducted to study the measurements of plant volume and leaf area of Ptadtyctadus orientates and their relations to plant height,crown breadth and leaf area index（LAI）.Results show that physical volume increased with the increase of cuboid and cylinder volume and had linear and extremely significantly positive correlation with cuboid and cylinder volume.With increasing crown width,physical volume and total leaf area presented linearity（R=0.572）and downward opening parabolas（R=0.450）. When crown width was 73cm,cylinder lateral area was 0.546m2 and cylinder cross sectional area was 0.329 m2,corresponding total leaf areas reached the maximum values of 3 581,3 639and 3 523cm2,respectively. With increasing total leaf area,leaf and branch volumes and physical volume presented downward opening parabolas,which all showed a significantly positive correlation with total leaf area.With increasing leaf volume,leaf area index presented an upward opening parabola.When leaf volume was 338cm3,leaf area index reached a maximum value of 6.1.

关 键 词：株高 冠幅 植株体积 总叶面积 叶面积指数 

分 类 号：S791.38[农业科学—林木遗传育种]