燕山北部山地人工落叶松林与天然次生林物种多样性的比较  

Biodiversity between larch plantation and secondary poplar-birch forest in north region of Yanshan mountain

作　　者：纪晓林[1] 贾彦龙[2] 卢金平[1] 李倩茹[2] 许中旗[2] 

机构地区：[1]河北省木兰围场国有林场管理局,河北围场068400 [2]河北农业大学,河北保定071000

出　　处：《河北林果研究》2011年第3期217-221,共5页Hebei Journal of Forestry and Orchard Research

基　　金：河北省科技厅科技支撑项目(10236728);林业公益性行业科研专项(200804027-07)

摘　　要：为了解燕山北部山地华北落叶松人工林植被物种多样性维持功能的高低,选取13 a和30 a生人工落叶松林,以13 a和28 a生天然次生杨桦林作为对照,对两种林分的植被多样性进行调查和分析,并研究了间伐对人工落叶松林植被物种多样性的影响。结果表明,林龄相同或相近的两种林分类型相比,无论是乔木层、灌木层或是草本层,人工落叶松林丰富度、Simpson指数、Shannon-Weiner指数均表现出相当或略高于天然次生杨桦林(30 a生人工落叶松林乔木层多样性指数除外);间伐对人工落叶松林植被物种多样性的短期影响主要体现在乔木层,对林下灌木层和草本层无明显影响。燕山北部山地人工落叶松林具有较高的植物多样性维持功能,没有导致物种多样性的降低。In order to understand the biodiversity maintain function of Larch plantation, taking 13 - year, 30- year Larch plantation and 13 - year,28 - year secondary poplar- birch forest as research object,the biodiversity between them and the effects of thinning on Larch plantation biodiversity were investigated. Results showed that biodiversities in larch plantation had no significant differences with secondary poplar-birch forest except Simpson Index and Shannon-weiner Index of 30 - year Larch plantation. Thinning mainly reduced the diversity of tree layer in short time, but it had no significant effect on shrub and herb layer. Larch plantation in north region of Yanshan mountain could maintain high biodiversity.

关 键 词：人工落叶松林 天然次生杨桦林 物种多样性 

分 类 号：S718[农业科学—林学]