安徽农业科学2025，Vol.53Issue(5)：106-110,5.DOI:10.3969/j.issn.0517-6611.2025.05.021
不同造林地马大杂交相思人工林生物量及分配格局差异
Differences of Biomass and Distribution Pattern of Acacia mangium×A.auriculiformis Plantation Under Different Afforestation Sites
摘要
Abstract
[Objective]To explore the stand biomass and distribution pattern of Acacia mangium×A.auriculiformis plantation in two kinds of forest land.[Method]Taking 7-year-old A.mangium×A.auriculiformis plantation in coastal sandy land and hilly area as the research object,the aboveground part and root biomass of tree layer and its distribution pattern were analyzed by biomass harvest method.[Result]The results showed that the DBH,tree height,under-branch height,crown width and height-diameter ratio of hilly and mountainous A.mangium×A.auricul-iformis plantation were 53.81%,97.76%,67.83%,22.3%and 21.88%higher than those of coastal sandy land,respectively.The biomass of some organs in the hilly and mountainous A.mangium×A.auriculiformis plantation was trunk>dead branch>living branch>leaf,while that in coastal sandy land was trunk>living branch>dead branch>leaf.The biomass of dead branches,trunks and leaves of A.mangium×A.auricul-iformis plantation in hilly and mountainous areas was higher than that in coastal sandy land,but the biomass of living branches was lower than that in coastal sandy land.The root biomass of A.mangium×A.auriculiformis plantation in hilly and mountainous areas was higher than that in coastal sandy land,and the root biomass distribution of different diameter classes in coastal sandy land was as follows:root pile>coarse root>large root>fine root>middle root>small root.Hilly and mountainous areas showed root pile>coarse root>large root>middle root>small root>fine root.There was no significant correlation between soil physical properties and organ biomass(P>0.05),but there was a significant positive correlation between soil bulk density and trunk biomass(P<0.05).There was a significant positive correlation between non-capillary porosity and root pile biomass(P<0.05).[Conclusion]The hills and mountains are more suitable for the normal growth of A.mangium×A.au-riculiformis,which is beneficial to the growth and development of this tree species.关键词
马大杂交相思/造林地/生物量/分配格局Key words
Acacia mangium×A.auriculiformis/Afforestation site/Biomass/Distribution pattern分类
农业科技引用本文复制引用
陈锦祥..不同造林地马大杂交相思人工林生物量及分配格局差异[J].安徽农业科学,2025,53(5):106-110,5.基金项目
福建省林业科技项目(ZMGG-0709). （ZMGG-0709）
