桉树纸浆用材林经济效益分析

Study on Economic Benefits of Eucalypt Paper Pulp Plantation

通过雷州林业局现行14个桉树纸浆用材林培育模式的木材产量调查,用净现值、内部收益率和效益成本比3个财务动态评价指标进行分析,得出经济效益最高的培育模式是带垦整地方式、造林密度2505株.hm2、基肥为有机肥加P肥或1号肥的模式。不同无性系经济效益最高的是DH32-22,其次是LH1,再次是SH1和U6,最差是W5;不同经营区经济效益最高的是南部经营区,中部经营区次之,北部经营区最低;萌芽更新林分的经济效益明显高于植苗更新的林分。

Timber yield of 14 silviculture modes for eucalypt paper pulp plantations were investigated and 3 financial indicators including NPV, IRR and benefit- cost were analyzed, the results showed that the silviculture mode with strip land preparation, which was 2505 trees per hectare of planting density,base fertilizer of organic manure plus phosphorus or No l fertilizer, could get the highest economic benefits. Economic benefits of 5 clone plantations of DH32-22,LH1,SH1,U6 and W5 were different,the highest one was DH32-z2, the next was LH1, the third were SH1 and U6 , and the worst was W5 . Planting eucalypt in south region could achieve the best economic benefits l the second was midlands, the third was north region. Stands of regeneration from sprouts got more economic benefits than stands of tree planting.