冀西北3种典型林分乔木层生物量研究  

Study on the Biomass of Arbor Layer in Three Typical Forest Stands in Northwest Hebei Province

作　　者：郭宾良 Guo Binliang(Baoding Forest Disease and Pest Prevention and Quarantine Station,Baoding 071000,China)

机构地区：[1]保定市森林病虫害防治检疫站,河北保定071000

出　　处：《防护林科技》2024年第4期66-68,76,共4页Protection Forest Science and Technology

基　　金：河北省林业和草原局科技推广示范项目“冀北山区森林生态系统健康经营技术推广示范”(冀LT〔2021〕004号)。

摘　　要：以冀西北庞家堡林场的3种林分为研究对象,对林下植被生物量进行比较研究,结果表明:(1)3种典型林分中乔木层生物量最大的是白桦纯林,最小的为油松杨桦混交林,大小排序为:白桦纯林>油松纯林>油松杨桦混交林。(2)3种典型林分的整体生物量和各树种生物量表现的规律是一样的,均为地下生物量小于地上生物量。(3)白桦、黑桦和蒙古栎3个树种,在3种林分中各器官的生物量大小规律是相同的,均表现为:树干>树枝>树根>树皮>树叶。(4)油松杨桦混交林中的油松和白桦的树干和树皮生物量占比均高于两个纯林。The comparative study was conducted on the biomass of understory vegetation with the three typical forest stands at Pangjiapu Forest Farm in northwest Hebei Province as the research objects.The results showed as the following four aspects.(1)Among the three typical forest stands,the highest biomass of the arbor layer was in the pure Betula platyphylla forest,and the lowest was in the mixed forest of Pinus tabulaeformis and poplar birch.The order of size was:pure Betula platyphylla forest>pure Pinus tabulaeformis forest>mixed forest of Pinus tabulaeformis and poplar birch.(2)The overall biomass and each tree species biomass of the three typical forest stands exhibited the same pattern,with underground biomass being lower than aboveground biomass.The biomass patterns of various organs in the three tree species of white birch,black birch and Quercus mongolica were the same in the three forest stands,all showing as follows:trunk>branch>root>bark>leaf.(4)The proportion of trunk and bark biomass of Pinus tabulaeformis and Betula platyphylla in the mixed forest of Pinus tabulaeformis and poplar birch was higher than that in the two pure forests.

关 键 词：冀西北 乔木层 生物量 

分 类 号：S718.55[农业科学—林学]