福建中亚热带天然阔叶林与人工林对比评价 Ⅲ人促阔叶林与人工林经济效益

COMPARISON BETWEEN NATURAL BROAD-LEAVED FOREST AND MAN-MADE FOREST IN THE MID-SUBTROPICAL ZONE OF FUJIAN PROVINCE Ⅲ.ECONOMIC EFFECT BETWEEN NATURAL BROAD-LEAVED FOREST BY ARTIFICIAL MEASURES PROMOTING REGENERATION AND MAN-MADE FOREST

对福建人促阔叶林与人工林直接经济效益对比评价结果表明 :人促阔叶林投入少、营林成本低 ,经济效益显著高于人工林。因此 ,应改变观念、充分重视天然阔叶林的各方面价值 ,在实施保护的基础上 ,对福建天然阔叶林实施可持续经营。

Comparison of direct economic effect in silivicultural phase between natural broad_leaved forest(NBF) by artificial measures promoting regeneration (AMPP) and man_made forest in Fujian province shows:NBF by AMPR is of investing less and its direct economic effect is significantly better than man_made forest.The IRR (Internal Rate of Return)of short_rotation natural broad_leaved forest by 30 years management is 12.38%～22.87%.The IRR of NBF by AMPR is 8.69%.The IRR of Chinese fir forest of fast_growing and high_yield in central productive zone is 5.76%.The IRR of Pinus massoniana forest of fast_growing and high_yield in central productive zone is 4.36%.And the IRR of man_made broad_leaved forest in site type Ⅰ is only 0.78%.Therefore,the traditional view which the direct economic effect of management of man_made forest is significantly better than that of NBF by AMPR is wrong should be converted.The whole value of NBF should be taken attention to and the sustainable management of NBF in mid_subtropical zone of Fujian province should be implemented on the procondition of conservation.