燕山北部山地绣线菊灌丛生物量研究  

Studies on biomass of Spiraea pubescens shrub in the north region of Yanshan mountain

作　　者：纪晓林[1] 刘乐乐[1] 李强[2] 许中旗[2,3] 

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]河北农业大学林学院,河北保定071000 [3]河北省林木种质资源与森林保护重点实验室,河北保定071000

出　　处：《河北林果研究》2012年第2期206-209,共4页Hebei Journal of Forestry and Orchard Research

基　　金：国家"十二五"科技支撑项目(2011BAD38B0605);河北省科技厅科技支撑项目(10236728)

摘　　要：绣线菊灌丛是燕山北部山地常见的退化生态系统类型,为了了解绣线菊灌丛的生长状况,对绣线菊灌丛的生物量进行了调查。结果表明:绣线菊灌丛地上生物量沿下坡-中坡-上坡的环境梯度有逐渐降低的趋势,下坡、中坡和上坡的总生物量分别为577.31g/m2、469.78g/m2和208.53g/m2;绣线菊灌丛中镶嵌分布的榛子灌丛的生物量和绣线菊灌丛也有相似的变化趋势,但榛子灌丛生物量明显高于绣线菊灌丛。绣线菊灌丛中草本层生物量也随坡度的增加有逐渐降低的趋势,其生物量的变化范围为118.92～276.72g/m2。该地区绣线菊灌丛生物量低于北方地区其他类型的灌丛。由此得出结论,绣线菊灌丛的生物量与地形条件密切相关,而且由于受到长期干扰,生物量处于较低水平。Spiraea pubescens shrub is of a common degraded ecosystem in the north region of Yanshan mountain. A study was conducted on the aboveground biomass of Spiraea pu- bescens shrub in order to understand the growth situation of Spiraea pubescens shrub. The results showed that the aboveground biomass of Spiraea pubescens shrub decreased along the environmental gradients of downslope-midslope-upslope. The total biomass of Spiraea pubescens shrub of lowslope, midslope, and upslope was 577.31,469.78 and 208. 53 g/mz , respectively. The Corylus heterophylla shrub distributed in Spiraea pubescens shrub also had a similar distribution trend, but the biomass of Corylus heterophylla shrub was significantly higher than that of Spiraea pubescens shrub. The biomass of herb in Spiraea pubescens shrub also decreased along the slope, ranging from 118.92 g/m^2 to 276.72 g/m^2. The bio-mass of Spiraea pubescens shrub in this region is lower than that of any other type of shrub in the northern region. In conclusion, the biomass of Spiraea pubescens shrub is closely re-lated to the terrain conditions, and the biomass of Spiraea pubescens shrub is in a low level due to long-term disturbance.

关 键 词：绣线菊灌丛 生物量 燕山北部山地 

分 类 号：S718.54[农业科学—林学]