卷荚相思人工林生长规律·生物量及生产力研究  

Research on Growth Law,Biomass and Productivity of Acacia cincinnata Plantation

作　　者：黄勇 覃静[2] 李松昌 秦武明[2] 朱贤良 段文雯[2] 

机构地区：[1]广西高峰林场,广西南宁530001 [2]广西大学林学院,广西南宁530005

出　　处：《安徽农业科学》2010年第22期12050-12053,共4页Journal of Anhui Agricultural Sciences

基　　金："十一五"广西科技项目[桂林科字(2009)14号];高峰林场珍贵及优良乡土树种科研项目

摘　　要：[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 study aimed to discuss the growth law,biomass and productivity of 8-year-old Acacia.cincinnata plantation.[Method] In 2000 the A.cincinnata plantation was built with the seedlings in Nanning area of Guangxi Municipality and in 2008,3 standard lands were set up to make the standing forest investigation,analyze the growth process and increment of A.cincinnata,determine its standing forest biomass and investigate the vegetation biomass under the forest.[Result] The fast growth period of DBH and tree height was in the 2th year,and the maturity of the volume was after the 7th year.The DBH （with skin）,tree height,the volume per single plant of 8-year-old A.cincinnata were 11.79 cm,15.64 m,0.082 99 m3.The biomass of 8-year-old A.cincinnata reached to 80.48 kg per strain on average,among which,the average biomass of the dry wood was the largest,being up to 45.82 kg per strain.The biomass proportion for organs in single plant was in order as dry woods rootsbranchesleaves.The total biomass of the arbor layer of A.cincinnata plantation reached to 112.52 t/hm2,the net productivity was 12.50 t/（hm2·a）.[Conclusion] The study provided the scientific basis for building the plantation in suitable area in central and southern Guangxi Municipality and predicting the growth of A.cincinnata.

关 键 词：卷荚相思 生长量 生物量 生产力 

分 类 号：S725.7[农业科学—林木遗传育种]