不同年龄杉木人工林抚育成效分析——以江西省靖安县为例
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摘要
以5a(幼林)、12a(中龄林)、18a(近熟林)生杉木人工林为研究对象,分别设置抚育间伐与对照(不抚育)2种处理,分别于2013年底和2015年底对样地进行调查。结果表明:抚育间伐促进了胸径和单株材积的生长,年平均胸径生长量的增加值抚育比对照幼林多44.4%、中龄林多25.0%、近熟林多14.3%,年平均单株材积生长量的增加值抚育比对照幼林多59.3%、中龄林多31.0%、近熟林多19.9%,上述差异均达到显著水平(p<0.05);抚育间伐对树高生长有促进作用,但与对照比,其差异未达显著水平(p>0.05);抚育明显改善了杉木幼、中龄林的健康状况,健康等级抚育样地普遍比对照样地高一级;抚育提高了林下植被种类的丰度、高度和盖度,抚育样地植被的垂直结构明显;总体而言,抚育间伐对杉木生长、林下植物生长和林分健康的促进作用幼林好于中龄林,好于近熟林。试验结果为杉木人工林的科学抚育提供了参考依据。
In this study,two types of thinning and control(non-tending) treatments were set up in 5 yearold(young),12 year-old(middle-aged),18 year-old(near-mature) Chinese Fir plantations respectively on tending before(2013) and after thinning(2015).The results showed that tending thinning promoted the growth of DBH and individual volume,and the average DBH increment was 44.4%,25.0% and 14.3%higher than that of CK,with tending the average individual volume increment was 59.3%,31.0% and19.9% higher than that of the control,the difference was significant(P < 0.05); As for thinning on tree height growth,the promoting effect,compared with the difference,was not significant(P > 0.05); tending significantly improved the Chinese Fir young and middle aged forest health status and health level of tending plot generally higher than the control one; tending improved the forest species abundance,vegetation height and coverage and the vertical structure of vegetation plots significantly; Overall,the effects of thinning on the growth of young Chinese Fir forest,plant growth and forest health were better than those of the middle aged forest and near mature forest.The results provided reference basis for the scientific tending of Chinese Fir plantation.
In this study,two types of thinning and control(non-tending) treatments were set up in 5 yearold(young),12 year-old(middle-aged),18 year-old(near-mature) Chinese Fir plantations respectively on tending before(2013) and after thinning(2015).The results showed that tending thinning promoted the growth of DBH and individual volume,and the average DBH increment was 44.4%,25.0% and 14.3%higher than that of CK,with tending the average individual volume increment was 59.3%,31.0% and19.9% higher than that of the control,the difference was significant(P < 0.05); As for thinning on tree height growth,the promoting effect,compared with the difference,was not significant(P > 0.05); tending significantly improved the Chinese Fir young and middle aged forest health status and health level of tending plot generally higher than the control one; tending improved the forest species abundance,vegetation height and coverage and the vertical structure of vegetation plots significantly; Overall,the effects of thinning on the growth of young Chinese Fir forest,plant growth and forest health were better than those of the middle aged forest and near mature forest.The results provided reference basis for the scientific tending of Chinese Fir plantation.
引文
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[22]徐宪立,马克明,傅伯杰,等.植被与水土流失关系研究进展[J].生态学报,2006,26(9):3137-3143.
[2]中华人民共和国中央人民政府.国家林业局召开会议启动全国森林抚育补贴试点[EB/OL](2010-01-13)[2013-06-06].http://www.gov.cn/gzdt/2010-01/13/content-1509282.htm
[3]肖卫平,胡浩然,刘晓勇,等.江西省森林抚育补贴项目成效及对策研究[J].江西林业科技,2014,42(5):45-49.
[4]孙玉贵.中央财政森林抚育补贴试点项目效果及其对策研究——以浙江省为例[D].临安:浙江农林大学,2012.
[5]肖永华,黄春龙,李吉生,等.宁都县森林抚育补贴试点项目实施成效[J].江西林业科技,2011(S1):22-23.
[6]赵西哲.湘中南地区主要用材林森林抚育综合效益研究[D].长沙:中南林业科技大学,2013.
[7]李朝栋,陈友风,王春相,等.江西省杉木人工林二元立木材积表适应性研究[J].江西林业科技,1994(2):23-25.
[8]王忠春,亢新刚,罗仙仙,等.森林健康评价研究进展[J].西北林学院学报,2010(5):163-169.
[9]丁波,丁贵杰,李先周.抚育间伐对马尾松人工林生产力和生物量的影响[J].林业资源管理,2016(1):72-77.
[10]钟飞霞,王瑞辉,廖文婷,等.高温少雨期环境因子对油茶果径生长的影响[J].经济林研究,2015(1):50-55.
[11]张水松,陈长发,吴克选,等.杉木林间伐强度材种出材量和经济效果的研究[J].林业科学,2006,42(7):37-46.
[12]徐金良,毛玉明,郑成忠,等.抚育间伐对杉木人工林生长及出材量的影响[J].林业科学研究,2014,27(1):99-107.
[13]王慧,郭晋平.我国森林抚育间伐研究进展[J].山西林业科技,2008(2):29-33.
[14]李淑华,杨继承,刘妍妍,等.森林抚育间伐研究综述[J].黑龙江生态工程职业学院学报,2010,23(1):30-31.
[15]夏东华,方伟,张学祥.杉木中幼林抚育间伐经济效益分析[[J].安徽林业科技,2003(1):20-21.
[16]毛志宏,朱教君,刘足根,等.间伐对落叶松人工林内草本植物多样性及其组成的影响[J].生态学杂志,2006,25(10):1201-1207.
[17]王克勤,王斌瑞.黄土高原刺槐林间伐改造研究[J].应用生态学报,2002,13(1):11-5.
[18]雷相东,陆元昌,张会儒,等.抚育间伐对落叶松云冷杉混交林的影响[J].林业科学,2005,41(4):78-85.
[19]马履一,李春义,王希群,等.不同强度间伐对北京山区油松生长及其林下植物多样性的影响[J].林业科学,2007,43(5):1-9.
[20]李春义,马履一,徐昕,等.抚育间伐对森林生物多样性影响研究进展[J].世界林业研究,2006,19(6):27-32.
[21]蔡锡安,夏汉平.森林生态系统中草层植物的生态功能[J].热带亚热带植物学报,2003,11(1):67-74.
[22]徐宪立,马克明,傅伯杰,等.植被与水土流失关系研究进展[J].生态学报,2006,26(9):3137-3143.