长白落叶松人工林热值及其能量现存量  

Caloric value and total standing crop energy of Larix olgensis henry gmelinii

作　　者：崔玉涛[1,2] 张启昌[1] 谢振财 杨军元[2] 轩志龙[1] 

机构地区：[1]北华大学林学院,吉林132013 [2]吉林省林业调查规划院,长春130022

出　　处：《生态学报》2016年第17期5452-5458,共7页Acta Ecologica Sinica

基　　金：中央财政林业科技推广示范跨区域重点推广示范项目([2011]TK022);吉林省重大科技发展计划项目(吉科合字20075012)

摘　　要：采用量热法对5个径级的长白落叶松各器官热值进行测定,结合生物量的数据,对长白落叶松的能量现存量进行研究。结果表明:长白落叶松各器官能量现存量模型W=aD^b最适推算长白落叶松的能量现存量。长白落叶松各器官热值的测定结果显示:枝>皮>干>叶>根。各器官的能量现存量呈现:干>根>皮>枝>叶的规律,能量现存总量1988.39×10~9J/hm^2,地上部分能量现存量远远高于地下部分,主要集中在0—12 m的树段,地下部分主要集中在粗根和根坨。对比5个径级根系的能量现存量,20径级根系的能量现存量最大(187.73×10~9J/hm^2),8径级根系的能量现存量最小(7.72×10~9J/hm^2)。对比5个径级长白落叶松的能量现存量,16径级的能量现存量最大(723.45×10~9J/hm^2),8径级的能量现存量最小(46.58×10~9J/hm^2)。对比长白落叶松和樟子松的能量现存量可知:长白落叶松小于樟子松。The caloric values of vegetation are indicative of energy conversion in the forest ecosystem, and serve as a measure of the energy that plants contain. Studies of seasonal changes in the caloric values of vegetation play a valuable role in promoting forest productivity and systemic energy input. Energy analyses are a method of evaluating the structure and function of a forest ecosystem, and contribute to the promotion of forest stand productivity by representing the amount of solar energy available to the vegetative community. Research on plant energy resource development has been conducted in the interest of alleviating the energy crisis and facilitating the conservation of the ecological environment. In this study, we conducted contrastive analyses of the caloric values and standing crop energy from different 5 diameter classes of organs of the 24-year-old Larix olgensis Gmelinii plantation on Mopan Mountain, in order to study their capacity to accumulate and store energy. The resulting knowledge of Larix olgensis Gmelinii plantation productivity will provide theoretical guidance for the improvement of Larix olgensis Gmelinii plantation management. Three healthy plants were sampled in plots on a Larix olgensis Gmelinii plantation, tree organs in 5 different diameter classes were collected, with 4 cm as one differentiating level. A Monsic layering and cutting method was adopted on the ground, to measure the characteristics of fresh trunk, bark, branch, and leaf material with 2 m as one differentiating level. A standard underground root evaluation method was adopted to measure the characteristics of roots. To ensure the accuracy of the data and effective, the following material was collected：trunk at breast height, 1- to 2-year-old branch bark, perennial branch bark, trunk bark, 1- to 2-year-old branches, and perennial branches. As for leaf material, the canopy was divided into 3 layers, and leaves were collected from the east, south, west, and north of each layer. To collect root material, the root system was

关 键 词：长白落叶松 径级 器官 热值 生物量 能量现存量 

分 类 号：S791.22[农业科学—林木遗传育种]