红花尔基沙地天然樟子松林生物量研究  

Biomass of Natural Pinus sylvestris var. mongolica stand in Honghuaerji Sandy Land

作　　者：张晓琳 孙亚娟 王家军 Zhang Xiaolin;Sun Yajuan;Wang Jiajun(Hulun-Beir Honghuaerji Forestry Bureau,Hulun-Beir 021112,Inner Mongolia;Qiqihar Branch,Heilongjiang Academy of Forestry Sciences,Qiqihar 161005,Heilongjiang)

机构地区：[1]呼伦贝尔市红花尔基林业局,内蒙古呼伦贝尔021112 [2]黑龙江省林业科学院齐齐哈尔分院,黑龙江齐齐哈尔161005

出　　处：《防护林科技》2022年第4期67-69,77,共4页Protection Forest Science and Technology

摘　　要：为了解樟子松天然林的生物量,对红花尔基的樟子松生物量进行了测定和分析,结果表明:樟子松叶面积指数一般为4.3~5.2,最高为7.7,最低为0.6736。在年龄相同、郁闭度相同条件下,单位面积生物量随平均胸径的增加而增加。樟子松地上生物量与地下生物量的比值随年龄增加而增加,比值为3.3~4.55,平均为3.92;根系生物量是全部生物量的1/5。樟子松的根系主要分布在0~15 cm土层,占全部根系的62.788%,>15~40 cm土层根系占14%,40 cm以下占23.78%。地上平均净生产力最高为2665.7 kg·hm^(-2)·a^(-1),最低为149.5 kg·hm^(-2)·a^(-1)。全部生物量最大净生产力为2394.8 kg·hm^(-2)·a^(-1)。叶面积与叶干质量比随年龄增加而下降。樟子松枝、叶、干、根的含水率平均为51.766%~55.35%,2年生球果含水率平均76.366%。In order to understand the biomass of natural Pinus sylvestris var.mongolica stand,the biomass of P.sylvestris var.mongolica of Honghuaerji were determined and analyzed,the results indicated that the leaf area index was between 4.3-5.2,which the highest value was 7.7 and the lowest value was 0.6736.Under the same age and canopy density,biomass per unit area increased with the increase of mean DBH.The ratio of aboveground biomass to underground biomass increased with age,ranging from 3.3 to 4.55,with an average of 3.92.The root biomass was 1/5 of the total biomass.The roots were mainly distributed in 0-15 cm soil layer,accounting for 62.788%of the total roots,and the roots accounted for 14%over 15-40 cm soil layer,and 23.78%below 40 cm.The highest aboveground net productivity was 2665.7 kg·hm^(-2)·a^(-1) and the lowest was 149.5 kg·hm^(-2)·a^(-1).The maximum net productivity of total biomass was 2394.8 kg·hm^(-2)·a^(-1).The ratio of leaf area to dry leaf mass decreased with age.The average moisture content of branches,leaves,stems and roots ranged from 51.766%to 55.35%,and average water content of 2-year cones was 76.366%.

关 键 词：红花尔基 樟子松天然林 生物量 

分 类 号：S791.253[农业科学—林木遗传育种]