三种速生人工林凋落物的持水性能  

Studies on the Water Holding Capacity of Three Kinds of Trees Litter

作　　者：陈文军 秦武明[2] 韦建晓[2] 黄勇 陆子珍 

机构地区：[1]广西国营钦廉林场,广西合浦536128 [2]广西大学林学院,广西南宁530005 [3]广西国营高峰林场,广西南宁530001 [4]广西斯道拉恩所林业有限责任公司,广西合浦536100

出　　处：《广西科学》2007年第2期177-179,共3页Guangxi Sciences

基　　金：广西高峰林业相思树短周期工业用材基地高产林试验与推广科研基金(X032069)资助项目

摘　　要：在广西国营高峰林场界牌分场选择立地条件、营林和管理措施、林分长势基本一致的5年生尾巨桉无性系3229(Eucalyptus3229)、厚荚相思(Acaciac rassicarpa)和马占相思(Acacia mangium)速生人工林,采集林下凋落物测定单位面积储量、持水量、持水率和持水速率,研究3种速生树种人工林下凋落物的持水性能。结果表明,厚荚相思凋落物的持水量和持水率最大,分别达18.40×103kg.hm-2和70%,尾巨桉3229的次之,分别为17.34×103kg.hm-2和50%,马占相思的最小,分别是13.49×103kg.hm-2和45%。厚荚相思和尾巨桉无性系3229的持水性能比马占相思的强。In the Jiepai Branch of Gaofeng state-owned Forest Farm of Guangxi, the five-years-old fast-growing plantation of Eucalyptus 3229, Acacia crassicarpa and Acacia mangium were chosen by the same sites, the same planting and management treatment and the alike growing status to study the water holding capacity of the litters of the three kinds of fast-growing plantation by measuring the standing crop, water holding, proportional water holding capacity and water holding rate. The results showed that the water holding and proportional water holding capacity of A. crassicarpa were the largest, and reached 18. 40 × 10^3 kg · hm^-2 and 70% respectively, followed by Eucalyptus 3228 ,were 17.34 × 10^3 kg · hm^-2 and 50% respectively,and the lowest in A. mangium, were 13.49 × 10^3 kg · hm^-2 and 45% respectively. The result indicated that Eucalyptus 3229 and A. crassicarpa plantation were stronger than A. mangium in water holding capacity.

关 键 词：人工林 凋落物 持水性能 

分 类 号：S714.7[农业科学—林学]