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川西高山林区长期以来更新的主要树种是云杉、红杉,由于生长慢,更新效果差。为寻找比上两树种更速生的高山树种,从1970年起,省林科所从辽宁引种日本落叶松,育苗后,于1973年春在海拔3,100米的塔干采伐迹地造林。以后陆续在我省不同海拔地区如:汶川、峨边、马尔康、平武、南江、洪雅、邛崃等县扩大引种,均收到良好效果。现已有1千亩以上,生长旺盛,未发现有病虫害。
The main tree species that have been renovated in the western Sichuan high mountain forests for a long time are spruce and red cedar. Due to the slow growth, the regeneration effect is poor. In order to find alpine species faster than the last two species, from 1970 onwards, the provincial Forestry Branch introduced Japanese larch from Liaoning and nurtured it. In the spring of 1973, the plantation was started at the deforestation site of 3,100 meters above sea level. After successively in different parts of our province, such as: Wenchuan, Ebian, Malcolm, Pingwu, Nanjiang, Hongya, Qionglai and other counties to expand the introduction, have received good results. Now more than 1 acres, vigorous growth, no pests and diseases found.