应用森林土壤化学性质和枯落物持水性对不同改造模式效果的评价——以大兴安岭阔叶混交低质林为例  

Evaluation of Forest Soil Chemical Properties and Water Holding Capacity of Litter on Different Transformation Modes——Taking Low-quality Mixed Broad-leaved Forest in Daxing'an Mountain as An Example

作　　者：陈蕾 董希斌 Chen Lei;Dong Xibin(Key Laboratory of Forests Sustainable Management and Environmental Microorganism Engineering of Heilongjiang Province,Northeast Forestry University,Harbin 150040,P.R.China)

机构地区：[1]森林持续经营与环境微生物工程黑龙江省重点实验室(东北林业大学),哈尔滨150040

出　　处：《东北林业大学学报》2019年第2期8-11,16,共5页Journal of Northeast Forestry University

基　　金：国家重点研发计划项目(2017YFC0504103)

摘　　要：对大兴安岭阔叶混交低质林进行了块状改造(6个样地)和带状改造(4个样地);运用主成分分析法分析不同改造模式对森林土壤化学性质(有机质、pH值、全氮、全钾、全磷、水解氮、速效钾、速效磷)和枯落物(蓄积量、最大持水量)的影响。结果表明:块状改造的效果,由优到劣依次为G_3(15 m×15 m)、G_1(5 m×5 m)、CK(对照)、G_4(20 m×20 m)、G_6(30 m×30 m)、G_2(10 m×10 m)、G_5(25 m×25 m);带状改造效果,由优到劣依次为S_3(14 m)、S_2(10 m)、S_1(6 m)、S_4(18 m)、CK(对照)。当块状改造面积为225 m^2、带状改造带宽为14 m时,改造效果最佳,并且随着改造强度的逐步加大,改造效果呈现先上升后下降的趋势。Block transformation(six plots)and strip transformation(four plots)of low-quality mixed broad-leaved forest in Daxing’an Mountain were carried out.Principal component analysis was used to analyze the chemical properties of forest soil(organic matter,pH,total N,total K,total P,hydrolyzable N,available K,and available P)and litter(cumulative volume,maximum water holding capacity).The effect of block transformation from good to bad is G 3(15 m×15 m),G 1(5 m×5 m),CK,G 4(20 m×20 m),G 6(30 m×30 m),G 2(10 m×10 m),and G 5(25 m×25 m);the effect of strip transformation from good to bad is S 3(14 m),S 2(10 m),S 1(6 m),S 4(18 m),and CK.When the block transformation area is 225 m 2,and the belt transformation bandwidth is 14 m,the transformation effect is the best,and with the gradual increase of the transformation strength,the transformation effect will rise firstly,and then decline.

关 键 词：阔叶混交林 低质林 改造模式 土壤化学性质 森林枯落物 

分 类 号：S756.5[农业科学—森林经理学] S714.2[农业科学—林学]