杉木萌芽次生林套种福建柏混交效果分析  

Analysis on the Mixed Effect of Interplanting Fokienia hodginsii With Cunninghamialanceolata Budding Secondary Forest

作　　者：马华茂 Ma Huamao(Litian Forestry Station,Qingliu County,Sanming City,Qingliu,Fujian 365300,China)

机构地区：[1]福建省清流县里田林业站,福建清流365300

出　　处：《绿色科技》2023年第17期145-150,共6页Journal of Green Science and Technology

摘　　要：报道了杉木萌芽次生林套种福建柏的混交效果。试验采用完全随机区组试验设计,三水平,三重复。3个水平分别是:LMH处理(较均匀保留杉木伐桩1000株/hm^(2),套种福建柏1000株/hm^(2));LMK处理(保留杉木伐桩2000株/hm^(2));HCK处理(不保留杉木伐桩,套种福建柏2000株/hm^(2))。结果表明:10年生混交林中福建柏与福建柏纯林比,平均胸径、平均树高和单株立木材积分别增加5.7%、5.6%和6.8%,但均未达到显著水平。混交林中杉木与杉木纯林比,平均胸径、平均树高和单株立木材积分别增加6.0%、4.9%和35.7%。平均胸径、树高两者间差异未达到显著水平,单株材积两者间在0.01水平上达到显著水平。混交林中杉木、福建柏与各自纯林生长进程比较基本相似,但生长量较大,而杉木萌芽林与福建柏生长进程存在明显差异,尤其是杉木萌芽林树高生长进程,第7~9年生连年生长量降至0.57~0.71 cm,生长率也迅速下降,呈现由快变慢,出现早衰。枯枝落叶量从大到小为:HCK>LMH>LMK处理,分解速率同样为:HCK>LMH>LMK处理。福建柏分解速率高于杉木,套种福建柏有利于改善土壤肥力,减少地力衰退。This paper reports the mixed effect of interplanting Fokienia hodginsii with Cunninghamia lanceolata budding secondary forest.The experiment adopted a completely randomized block design with three levels and three replicates.The three levels are:LMH treatment(1000 Cunninghamia lanceolata stumps/hm^(2) are evenly reserved and there are 1000 Fokienia hodginsii/hm^(2)),LMK treatment(there are 2000 Cunninghamia lanceolata stumps/hm^(2))and HCK treatment(2000 Fokienia hodginsii trees/hm^(2) were interplanted without Cunninghamia lanceolata stumps).The results showed that the average DBH,average tree height and single tree volume increased by 5.7%,5.6%and 6.8%,respectively,compared with the pure forest of Fokienia hodginsii and Fokienia hodginsii,but they did not reach significant levels.Compared with Cunninghamia lanceolata pure forest,the average DBH,average tree height and single tree volume in mixed forest increased by 6.0%,4.9%and 35.7%respectively.The difference between average DBH and tree height did not reach a significant level,but the volume per plant reached a significant level at the level of 0.01.The growth process of Cunninghamia lanceolata and Fokienia hodginsii in the mixed forest is basically similar to that of their pure forests,but the growth amount is relatively large,while there are obvious differences between the growth process of Cunninghamia lanceolata budding forest and Fokienia hodginsii,especially in the height growth process of Cunninghamia lanceolata budding forest.The annual growth amount dropped to 0.57~0.71cm in the 7th~9th year,and the growth rate also decreased rapidly,from fast to slow,with premature aging.The litter amount in descending order is HCK>LMH>LMK treatment,and the decomposition rate is also HCK>LMH>LMK treatment.The decomposition rate of Fokienia hodginsii is higher than that of Cunninghamia lanceolata,and interplanting Fokienia hodginsii is beneficial to improve soil fertility and reduce soil fertility decline.

关 键 词：杉木 福建柏 萌芽次生林 混交效果 

分 类 号：S7[农业科学—林学]