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Position: Home > Articles > Biomass and Productivity of Eucalyptus urophylla ×E. grandis Plantations in Continuous Age Sequences in Southwest Guangxi Agricultural Research and Application 2016 (3) 6-11

桂西南连续年龄序列尾巨桉人工林的生物生产力

作  者:
杨卫星;何斌;卢开成;李春宁;廖倩苑;刘俊;滕秋梅
单  位:
广西国有派阳山林场;广西大学林学院
关键词:
尾巨桉人工林;生物量;生产力;年龄序列;桂西南
摘  要:
为了揭示桂西南尾巨桉人工林生长过程中的生物量和生产力的变化特征,本文采用固定标准地法对广西宁明县1、2、3和4年生尾巨桉人工林的生物量及生产力进行了研究。研究结果显示:尾巨桉人工林乔木层生物量随林龄的增大而逐步积累,分别为9.02、46.53、73.67和97.20t/hm~2,其中干材所占的比例随着林龄的增加而明显增大,树枝、干皮和树叶所占的比例则呈现相反的变化趋势。各林龄乔木层净生产力分别为每年9.02、23.26、24.56和24.30 t/hm~2,不同林龄净生产力的比例均以干材最大,其次是树根、树枝和树皮,最小是树叶。1~4年生尾巨桉人工林生林下植被生物量为5.42~8.62 t/hm~2,随林分生长过程而逐渐积累。研究结果可为该地区桉树人工林的经营管理提供科学依据。
译  名:
Biomass and Productivity of Eucalyptus urophylla ×E. grandis Plantations in Continuous Age Sequences in Southwest Guangxi
作  者:
Yang Wei-xing;He Bin;Lu Kai-cheng;Li Chun-ning;Liao Qian-yuan;Liu Jun;Teng Qiu-mei;Paiyangshan Forestry Farm;Forestry College, Guangxi University;
关键词:
Eucalyptus urophylla ×E.grandis plantation;;biomass;;productivity;;age sequence;;Southwest Guangxi
摘  要:
In order to reveal the variation characteristics of biomass and productivity of Eucalyptus urophylla × E. grandis plantation growing in southwest Guangxi, this paper studies the biomass and productivity of 1-year-old to 4-year-old Eucalyptus urophylla × E.grandis plantation growing in Ningming County,Guangxi, China by the standard plot method. The results showed that the tree biomass of 1-, 2-, 3- and 4- year-old stands were 9.02、46.53、73.67 and97.20 t/hm~2 respectively,the proportion of stem increased obviously with the increase of forest stand age, whereas, the proportion of branches, barks and leaves showed the opposite trend.The productivity of the tree layer of 1-, 2-, 3- and 4- years-old stands were 9.02、 23.26、24.56 and 24.30 t/(hm~2.a) respectively. Stem had the highest proportion of net productivity in different stand age, followed by root, branch, bark and leaf. The understory biomass of 1~4year old E. urophylla×E.grandis plantation was 5.42~8.62 t/hm~2, which gradually accumulated with the stand growth. The research results would provide a scientific basis for the management of Eucalyptus plantation in the region.

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