福州市沿海木麻黄防护林更新迹地引种相思树种适应性分析

Analysis of Adaptability of Acacia Tree Species Introduced from Casuarina Shelter Forest Regeneration Cutover Land along the Coast of Fuzhou

对福州长乐市沿海木麻黄迹地引种的6种相思树种的适应性、抗逆性进行比较分析,结果表明,纹荚相思、肯氏相思、卷荚相思和厚荚相思的适应性较强,其中厚荚相思生长最好,8年生林分的平均树高、胸径、单株材积分别达9.53 m、10.48cm、0.0476 m3,分别比同龄的木麻黄提高4.15%、40.11%、126.67%;纹荚相思、肯氏相思、卷荚相思的生长情况也相对较好,8年生平均树高、胸径达6.5～7.0 m和6.3～6.6 cm。同时厚荚相思、纹荚相思、肯氏相思、卷荚相思的抗寒、抗风以及抗病虫害能力较强,林分保存率较高,适合作为沿海木麻黄防护林更新树种。

This paper analyzed the adaptability of 6 kinds of Acacia tree species introduced from Casuarina shelter forest generation cutover land along the coast of Changle,Fuzhou.Results showed that the Acacia aulacocarpa,Acacia cunninghamii,Acacia concinnatai,and Acacia crassicarp had stronger adaptability.And Acacia crassicarp exhibited best growth,its average tree height,DBH and volume were 9.53 m,10.48 cm,and 0.0476 m3 respectively for 8-year-old stand.Compared with the even aged Casuarina,the Acacia crassicarp was over 4.15%,40.11%,126.67% for the tree height,DBH and volume.Besides,these 4 kinds of Acacia tree species had stronger resistance of cold,wind and pest as well as higher survival rate.So we concluded that they were suitable for the renewal species of coastal Casuarina forestry.