摘要
采用多目标决策方法评价研究滨海沙地木麻黄防护林造林密度分别为1667,2500,3333,5000,6667,8333及10000株/hm2的林分抗风性及速生丰产性,结果表明:随造林密度增大,林分的抗风能力和速生丰产性下降.在木麻黄7种造林密度林分中,初植密度2500株/hm2的林分抗风能力和丰产性能最强;初植密度1667株/hm2的林分最速生,抗风能力和丰产性居第二.综合评价指标以造林密度1667株/hm2的林分为最高,2500株/hm2的林分居第二,建议滨海沙地木麻黄造林密度控制在1667～2500株/hm2.
The characteristics of wind-proof, fast-growing and high-yield of Casuarina equisetifolia plantations with densities of 1 667,2 500,3 333,5 000,6 667,8 333 and 10 000 tree/hm^2 respectively were evaluated by the method of polygonal decision. The results showed that the wind-proof, fast-growing and high-yield characteristics of the stands decreased along with the increment of plantation densities. Among the seven different densities studied for Casuarina equisetifolia, the best results of wind-resistance and high-yield properties were demonstrated by the stand with density of 2 500 tree/hm^2, whereas the stand with density of 1 667 tree/hm^2 showed the fastest growing speed and it produced the second to the best of characteristics of wind-resistance and high-yield. The comprehensive evaluation index value of the stand with density of 1 667 tree/hm^2 was the highest and that of the stand with 2 500 tree/hm^2 was the second. It was suggested that the rational plantation densities of Casuarina equisetifolia in sandy soil should be around 1 667 tree/hm^2 to 2 500 tree/hm^2.
出处
《西南林学院学报》
CAS
2004年第3期14-16,20,共4页
Journal of Southwest Forestry College
基金
国家"十五"攻关项目(2002BA516A16-15).
