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[目的]探讨8年生卷荚相思人工林的生长规律、生物量和生产力。[方法]于2000年在广西南宁地区用卷荚相思实生苗造林,2008年设置3块标准地进行调查,分析卷荚相思的生长过程和生长量,测定其林分生物量,并调查林下植被生物量。[结果]卷荚相思胸径、树高的高生长期均在第2年,材积的成熟期在第7年后。8年生卷荚相思的胸径(带皮)、树高和单株材积分别为11.79cm、15.64m和0.08299m3。8年生卷荚相思生物量平均达到了80.48kg/株,其中干材的平均生物量最大,为45.82kg/株。单株器官的生物量所占比例的顺序为:干材>根>干皮>枝条>叶子。卷荚相思人工林乔木层总生物量达到112.52t/hm2,乔木层净生产力为12.50t/(hm2.年)。[结论]该研究为广西壮族自治区南部适地造林与卷荚相思的生长预测提供了科学依据。
[Objective] The research aimed to discuss the growth law, biomass and productivity of 8-year-old Acacia crassicarpa plantation. [Method] The seedling of Acacia crassiculla was planted in Nanning, Guangxi Province in 2000. Three standard plots were set up in 2008 to investigate the growth and growth of Acacia crassicarpa. The stand biomass was measured and the undergrowth Vegetation biomass. [Result] The DBH of Acacia crassicarpa and tree height were both in the second year and the maturity of volume was in the seventh year. The DBH of 8-year-old Volvariella volvacea was 11.79 cm, the height of the tree and the volume of single plant were 15.74 cm and 0.08299 m respectively. The largest amount of 45.82kg / strain. The order of the biomass of single organ was as follows: stem> root> stem> branches> leaves. The total biomass of the arbor layer of Acacia crassicarpa reached 112.52 t / hm2, and the net productivity of arbor layer was 12.50 t / (hm2. Year). [Conclusion] The study provided scientific basis for the growth prediction of afforestation and Acacia crassicarpa in southern Guangxi Zhuang Autonomous Region.