冀北山地不同年龄华北落叶松人工林的生物量  

Studies on biomass of different age Larix principis-rupprechtii plantations

作　　者：李校[1] 于志勇 许中旗[3,4] 郝俊霞 刘乐乐[3,4] 

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]承德县红旗林场,河北承德067400 [3]河北农业大学林学院,河北保定071000 [4]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》2013年第3期226-228,232,共4页Hebei Journal of Forestry and Orchard Research

基　　金：河北省科技厅科技支撑项目(10236728);国家"十二五"科技支撑计划项目"华北中山区高效水土保持林构建技术研究与示范(2011BAD38B0605)

摘　　要：为了了解不同年龄华北落叶松人工林生物量的变化及分配规律,采用相对生长法(乔木)和样方收获法(灌木、草本、凋落物)对4个年龄的华北落叶松人工林生物量进行测定。结果表明,华北落叶松人工林总生物量随林龄的增加而增加,9、18、33、43年生华北落叶松人工林总生物量分别为43.67、67.7、110.38和281.66t/hm2,总生物量绝大多数集中于乔木层;华北落叶松人工林乔木层各器官生物量分配为,干量占25.85%～62.36%,根量占7.96%～13.38%,枝量占9.86%～11.30%,叶量占1.40%～5.54%,另外,干生物量总体上为随着树龄的增加而增大,而枝、叶的生物量则随着树龄的增加而减少;林下植被层生物量所占比例随着林分年龄的增大而减小;凋落物层生物量所占比例,除33年生外,均达到了20%以上。In order to understand the biomass and its allocation of Larix principis-rupprechtii planta- tions, the biomass of the four age Larix principis-rupprechtii plantations was studied based on the re- gression analysis （ for trees） and clear cutting （ for shrubs, herbs and litter）. Results showed that the biomass of Larix principis-rupprechtii plantations increased with the increase of plantation age, and the biomass of 9, 18, 33 and 43 year old plantations were 43.67, 67.7,110. 38 and 281.66 t/hm2 , re- spectively with the most biomass of the plantations concentrated on the tree layer. The biomass of the tree layer allocated in the organs was 25.85%-62.36%, 7.96%-13. 38%, 9. 86%-11.30% and 1.40%-5.54% of the total biomass in stems, roots, branches and leaves, respectively. Additionally, the biomass of stems increased with the increase of plantation age, while the biomass of branches and leaves decreased with the increase of plantation age; The biomass of understory vegetation decreased with the increase of plantation age; The proportion of litter layer biomass was above 20%, except for the plantation of 33 years.

关 键 词：华北落叶松 人工林 生物量 

分 类 号：S791.22[农业科学—林木遗传育种]