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Position: Home > Articles > Study on the Coarse Root Biomass and Distribution Characteristics about Natural Larix Gmelinii Forest Forest Resources Management 2013 (5) 62-66,90

兴安落叶松天然林粗根生物量及分布特征的研究

作  者:
王晓宏;张秋良;郭玉东;邢婷婷;王飞;高孝威;吴晶
单  位:
内蒙古农业大学;乌拉特后旗林业局
关键词:
兴安落叶松;粗根生物量;根系分布
摘  要:
森林粗根生物量是森林生态系统生物量的重要组成部分,以兴安落叶天然林粗根生物量为研究对象,利用平均标准木法和全部挖掘法测定了不同年龄兴安落叶松天然林的粗根生物量,研究了粗根根系的空间分布格局,并建立了粗根生物量回归模型。结果表明:林分粗根生物量随林龄的增加而增加,幼龄林(26a,38a)的根系生物量为7.92 t/hm2,中龄林(49a,68a)为39.77 t/hm2,近熟林(96a)为49.80 t/hm2,成过熟林(132a)为74.11t/hm2;兴安落叶松根生物量占林木个体生物量的15.12%~27.25%,且根系生物量的65%以上集中分布在0~20 cm土壤层中;根生物量随着土壤深度的增加呈幂函数降低;建立的胸径—粗根生物量模型B=0.011314D2.7629达到极显著水平(R2=0.97)。
译  名:
Study on the Coarse Root Biomass and Distribution Characteristics about Natural Larix Gmelinii Forest
作  者:
WANG Xiaohong;ZHANG Qiuliang;GUO Yudong;XING Tingting;WANG Fei;GAO Xiaowei;WU Jing;Inner Mongolia Agricultural University;Wulatehou County Forestry Bureau;
关键词:
Larix gmelini,coarse root biomass,root distribution
摘  要:
The forest coarse root biomass is an important part of forest ecosystem. In this paper,we talk about coarse root biomass about natural Larix gmelinii forest,use the average standard tree and all mining method to determinate different age coarse root biomass and distribution pattern of larch forests,and build the coarse root biomass regression model. The results showed that with the increasing of stand age,stand coarse root biomass increased. The root biomass of young forest( 26 years,38 years) was 7. 92 t / hm2,middle-aged forest( 49 years,68 years) was 39. 77 t / hm2,near mature forest( 96 years) was 49. 80 t/hm2and mature forest( 132 years) was 74. 11t / hm2. In Larix gmelini individual biomass,the root biomass accounted for 16. 40 ~ 27. 25%. More than 65% of root biomass concentrated in the 0 ~ 20 cm soil layer. Root biomass increased,with soil depth power function decreased. Established DBH-coarse root biomass model B = 0. 011314D2. 7629reached significant levels( R2= 0. 97).

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