冀北山区山杨和白桦混交林生长差异比较分析
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摘要
为了给冀北山区山杨和白桦混交林的经营和管理提供相应的理论依据,选取河北省木兰围场国有林场管理局下辖的龙头山林场山杨和白桦混交林作为研究对象,运用标准地调查法、树木解析法,在样地随机伐取样木,将林木胸径、树高、材积等的连年生长量,以及平均生长量、生长率等作为评价标准,对冀北山区山杨和白桦混交林的生长差异进行比较分析。结果表明,山杨和白桦的混交林,树高变化在前期白桦大于山杨(其平均生长量和生长率分别高出0.05 m、1.3个百分点),中后期山杨大于白桦(分别高出0.05 m、0.14 m、1.3个百分点);胸径变化在前期山杨和白桦没有差别,但在中后期山杨大于白桦(平均和连年生长量差值分别为0～0.04 cm、0.01～0.21 cm);材积变化在前期山杨和白桦没有差别,但在中后期山杨大于白桦(平均和连年生长量差值分别为0～0.001 1 m~3、0～0.002 3 m~3)。
In order to provide a theoretical basis for the management of the mixed forest of Populus davidiana and Betula platyphylla in the northern Hebei province, the mixed forest of Populus davidiana and Betula platyphylla in the Longshan Forest Farm under the Mulanweichang State-owned Forest Farm Administration of Hebei Province was selected as the research object. The sample-plot investigation method and tree analysis method were used on randomly selected sample trees to analyze the growth differences of the mixed forest of Populus davidiana and Betula platyphylla with indicators like the annual growth,average growth and growth rates of the DBH,tree height,and volume as the evaluation criteria.The results showed that in the mixed forest of Populus davidiana and Betula platyphylla,the height change of Betula platyphylla was larger than that of Populus davidiana in the early stage(the average height and growth rate were 0.05 mand 1.3 percent higher,respectively);while the height change of Populus davidiana was larger than that of Betula platyphylla in the middle and late stages(0.05 m,0.14 mand 1.3 percent higher,respectively).There was no difference in DBH between Populus davidianaand Betula platyphyllain the early stage,but Populus davidiana was larger than Betula platyphyllain the middle and late stage(the difference of average and annual growth was 0～0.04 cm and 0.01～0.21 cm,respectively).There was no difference in volume change between Populus davidiana and Betula platyphylla Suk.in the early stage,but Populus davidiana was larger than Betula platyphylla Suk.in the middle and late stage(the difference of average and annual growth was 0～0.001 1 m~3 and 0～0.002 3 m~3,respectively).
In order to provide a theoretical basis for the management of the mixed forest of Populus davidiana and Betula platyphylla in the northern Hebei province, the mixed forest of Populus davidiana and Betula platyphylla in the Longshan Forest Farm under the Mulanweichang State-owned Forest Farm Administration of Hebei Province was selected as the research object. The sample-plot investigation method and tree analysis method were used on randomly selected sample trees to analyze the growth differences of the mixed forest of Populus davidiana and Betula platyphylla with indicators like the annual growth,average growth and growth rates of the DBH,tree height,and volume as the evaluation criteria.The results showed that in the mixed forest of Populus davidiana and Betula platyphylla,the height change of Betula platyphylla was larger than that of Populus davidiana in the early stage(the average height and growth rate were 0.05 mand 1.3 percent higher,respectively);while the height change of Populus davidiana was larger than that of Betula platyphylla in the middle and late stages(0.05 m,0.14 mand 1.3 percent higher,respectively).There was no difference in DBH between Populus davidianaand Betula platyphyllain the early stage,but Populus davidiana was larger than Betula platyphyllain the middle and late stage(the difference of average and annual growth was 0～0.04 cm and 0.01～0.21 cm,respectively).There was no difference in volume change between Populus davidiana and Betula platyphylla Suk.in the early stage,but Populus davidiana was larger than Betula platyphylla Suk.in the middle and late stage(the difference of average and annual growth was 0～0.001 1 m~3 and 0～0.002 3 m~3,respectively).
引文
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[2] 牛庆花,郭宇嘉,陆贵巧,等.不同坡位油松白桦混交林特征分析[J].林业与生态科学,2018,33(2):144-155.
[3] 赵山山.温带森林土壤有机碳特征初步研究[D].哈尔滨:东北林业大学,2013.
[4] 彭萱亦.不同演替阶段针阔混交林生物多样性评价指标体系研究[D].哈尔滨:东北林业大学,2014.
[5] 佚名.八大公山亚热带常绿落叶阔叶混交林主要树种细根形态及其空间分布[D].武汉:中国科学院研究生院(武汉植物园),2015.
[6] 何宗明,杨玉盛,郑志平.杉观混交林中杉木和纯林杉木生长特点差异[J].林业科学,2001,37(1):126-130.
[7] 夏成财,刘忠玲,王庆成,等.16年生落叶松白桦纯林与混交林林分生长量及生物量对比[J].东北林业大学学报,2012,40(10):1-3.
[8] 王鹏.马尾松人工混交林直径分布规律的研究[J].江西林业科技,2005(4):6-7.
[9] 张绘芳,李霞,王建刚,等.塔里木河下游植物群落结构特征分析[J].生态环境学报,2007,16(4):1219-1224.
[10] 梁文俊,丁国栋,包岩峰,等.冀北山地山杨白桦混交林林分空间结构研究[J].甘肃农业大学学报,2012,47(3):85-89.
[11] 邵方丽,余新晓,吴海龙,等.冀北土石山区天然次生林山杨、白桦种群的空间分布格局[J].林业科学,2012,48(6):12-17.
[12] 王金香,王立军,邵丽华.塞罕坝机械林场幼林抚育现状分析及对策[J].中国林业,2010(4):51-51.
[13] 邢闻涛.杨树人工林退化林分修复[J].山西林业科技,2017,46(1):55-56.
[14] 张弓乔,惠刚盈.森林经营试验样地的数据调查与分析方法研究——以京西山地人工侧柏林为例[J].林业科学研究,2017,30(4):633-639.
[15] 庞丽峰.基于目标树经营的林分收获分析及信息管理系统研究[D].北京:中国林业科学研究院,2015.
[16] 基于三角原理的森林测高器研制与应用[D].泰安:山东农业大学,2011.
[17] 董利虎,李凤日,贾炜玮.林木竞争对红松人工林立木生物量影响及模型研究[J].北京林业大学学报,2013,35(6):000015-22.
[18] 长白落叶松人工林树冠结构及生长模型研究[D].北京:北京林业大学,2013.
[19] 张二亮,宫宇,陈永军,等.华北落叶松生长规律初探[J].河北林果研究,2015(1):30-32.
[20] THOMAS Knoke,CHRISTIAN Ammer,BERND Stimm,et al.Admixing broadleaved to coniferous tree species:a review on yield[J].Ecological Stability and Economics,2008,127:89-101.
[21] 闫琰,张春雨,赵秀海.长白山不同演替阶段针阔混交林群落物种多度分布格局[J].植物生态学报,2012,36(9):923-934.
[22] 陈喜友.檫木不同混交方式生长情况研究[J].安徽林业科技,2015(4):9-11.
[23] 李积山.兰州市南北两山主要乔木树种生长适宜性分析[J].甘肃科技,2010,26(16):156-162.