防护林科技
防護林科技
방호림과기
PROTECTION FOREST SCIENCE AND TECHNOLOGY
2015年
7期
11-13
,共3页
香椿%造林效果%经济分析
香椿%造林效果%經濟分析
향춘%조림효과%경제분석
Toona sinensis%afforestation effect%economic analysis
以福安市1999年营造的香椿用材林林分为对象,进行造林效果和经济效益分析。结果表明：在不同的立地条件下,营造香椿用材林林分胸径、蓄积量差异显著,随着林分林龄的增大,香椿的胸径、蓄积量差异增大；Ⅰ、Ⅱ类地培育香椿用材林内部收益率在15.56%以上,能带来较好的经济效益,Ⅲ类地培育香椿用材林内部收益率在-5.31%,不能带来经济效益。培育香椿用材林应选择Ⅰ、Ⅱ类地造林,以选择Ⅰ类地最佳。
以福安市1999年營造的香椿用材林林分為對象,進行造林效果和經濟效益分析。結果錶明：在不同的立地條件下,營造香椿用材林林分胸徑、蓄積量差異顯著,隨著林分林齡的增大,香椿的胸徑、蓄積量差異增大；Ⅰ、Ⅱ類地培育香椿用材林內部收益率在15.56%以上,能帶來較好的經濟效益,Ⅲ類地培育香椿用材林內部收益率在-5.31%,不能帶來經濟效益。培育香椿用材林應選擇Ⅰ、Ⅱ類地造林,以選擇Ⅰ類地最佳。
이복안시1999년영조적향춘용재림림분위대상,진행조림효과화경제효익분석。결과표명：재불동적입지조건하,영조향춘용재림림분흉경、축적량차이현저,수착림분림령적증대,향춘적흉경、축적량차이증대；Ⅰ、Ⅱ류지배육향춘용재림내부수익솔재15.56%이상,능대래교호적경제효익,Ⅲ류지배육향춘용재림내부수익솔재-5.31%,불능대래경제효익。배육향춘용재림응선택Ⅰ、Ⅱ류지조림,이선택Ⅰ류지최가。
Taking Toona sinensis in Fuan city in 1 999 as objects,effects and economic analysis were conducted.Re-sult shows that under different site conditions,DBH,volume of Toona sinensis stand have significant differences;DBH,volume of Toona sinensis increase largely with the increase of the forest age.Cultivating timber of Toona sinensis can bring optimal economic (internal rate of return being more than 1 5.56% )in Ⅰ,Ⅱ-Grade land;culti-vating timber of Toona sinensis can’t bring optimal economic benefits(internal rate of return being more than-5. 31% )in Ⅲ-Grade land,which is operating at a loss.Ⅰ,Ⅱ-Grade land should be selected for cultivating Toona sinensis ,the optimal choice is the Ⅰ-Grade land.
