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《Journal of Beijing Forestry University》 1989-03
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A Study on the Felling Age of Artificial Larix gmelinii Rupr. Wood Trees

Lin Sichao Li Caide Piao Genwu(Institute of Forest Survey and Project, Heilongjiang Province)  
Larix gmelinii is the fundamental afforestation species in Hei-longjiang province. The age of artificial Larix gmelinii trees in various districts is 20-30 years at present. Some districts have grown the trees for more than 35 years, and various districts began have to fell and exploit them. Because the proper felling age is not everywhere the same, management is now quite confused. To reasonably determine the felling age of artificial Larix gmelinii trees, we investigated their growth, and got the following conclusions.1. the quantitative mature age of artificial Larix gmelinii trees is 31-40 years. 2. the technical mature age of artifi-cial Larix gmelinii trees is 25 years. 3. the trees which grow on the site indexes above 3 may breed middle diameter timber, the felling age of which 31-40s the trees which grow on the site index below 4 may breed pine pole stock, the felling age of which is 25 years.
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