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华北落叶松(Lαrix principisvαr.Rup-rechtii),是华北地区的主要山地造林树种,材质好,用途广,耐腐朽,生长快,且具优良生物学特性。对土壤有较强的适应性,并具有较强的抗风能力及涵养水源的功能。 落叶松在我县集中分布于2000米上下山地,而且大都是天然起源。本文试图从华北落叶松在我县不同海拔高度上的生长情况,探讨华北落叶松在我县的适生垂直带,分析和论述在我县发展落叶松人工用材林的可行性。 一、华北落叶松的分布状况
Larix principis-rupprechtii is the main afforestation species in North China. Its material is good, widely used, decay-resistant, fast-growing and has excellent biological characteristics. Strong adaptability to the soil, and strong wind resistance and water conservation function. Larch in my county concentrated in the 2000 meters up and down the mountain, but most are of natural origin. This paper attempts to explore the growth of Larix principis-rupprechtii at different altitudes in our county, discuss the suitable vertical belt of Larix principis-rupprechtii in our county, and analyze and discuss the feasibility of developing Larix gmelinii plantation in our county. First, the distribution of Larix principis-rupprechtii