东山岛沙地木麻黄林下套种相思类树种试验

Trial on Interplanting Acacia Tree Species in Casuarina equisetifolia Forestry on Dongshan Island Sandy Land

在东山岛沙地木麻黄基干林带空地内套种绢毛相思、厚荚相思、纹荚相思和肯氏相思,研究相思树在木麻黄基干林带内适应性和生长效果及木麻黄林带套种相思树后防风效果。结果表明:绢毛相思、厚荚相思、纹荚相思和肯氏相思在沙地木麻黄基干林带内套种成活率和保存率较高,不同相思树的造林成活率、保存率、树高和胸径均存在明显差异,厚荚相思的造林成活率、保存率、树高和胸径最大,纹荚相思其次。木麻黄基干林带郁闭度对相思树的生长产生显著影响,表现为林带郁闭度越大,林下相思树的造林成活率、保存率、树高和胸径越小。套种厚荚相思的木麻黄林带防风效果最好,套种纹荚相思的木麻黄林带防风效果次之。

Based on interplanting A.holosericea,A.crassicarpa,A.aulacocarpa and A.Cunninghamii in Casuarina equisetifolia main shelterbelt on Dongshan Island sandy land,this paper studied the adaptability and growth effect Acacia tree species as well as the wind prevention effect after interplanting Acacia tree species in Casuarina equisetifolia Forestry.The results showed that the survival and preservation rate were high for Acacia tree species interplanted in Casuarina equisetifolia main shelterbelt on sandy land.The difference of the survival and preservation rate,height and diameter of different Acacia tree species was obvious,of which those of A.crassicarpa were the biggest and those of A.aulacocarpa followed.The canopy density of Casuarina equisetifolia main shelterbelt obviously affected the growth of Acacia tree species,which showed the greater the canopy density of the shelterbelt,the smaller the survival rate,preservation rate,height and diameter of the underforest Acacia afforestation.The wind prevention effect of Casuarina equisetifolia shelterbelt interplanted A.crassicarpa was the best and that of Casuarina equisetifolia shelterbelt interplanted A.aulacocarpa was the second.