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引言西伯利亚落叶松(Larix sibirica Ledeb.)和兴安落叶松(L.gmelinii Rupr.)的心材具有很强的耐腐性。这一点在科学调查以及考古发现和实际观察中已得以证明。腐朽的程度决定于活性微生物和环境条件。在接触土壤的相似腐朽条件下,落叶松心材比欧洲赤松(Pinus sylvestris L.)的心材腐朽少30%～50%。所有调查树种的腐朽程度均与木材密度紧密相关。广泛分布于俄罗斯的两种落叶松,即西伯利亚落叶松和兴安落叶松的天然耐腐性是心材的重要特性之一。较高的天然耐腐性和良好的机械性质使这种木材广泛应
Introduction The heartwood of Larix sibirica Ledeb. And L.gmelinii Rupr. Is highly resistant to decay. This is evidenced in scientific investigations as well as in archaeological discoveries and practical observations. The degree of decay depends on the active microorganisms and the environmental conditions. Under similar decay conditions in contact with soil, larch heartwood is 30% to 50% less heartwood decay than Pinus sylvestris L. The degree of decay of all investigated species is closely related to the density of wood. Two kinds of larch widely distributed in Russia, namely the natural decay resistance of Larix gmelinii and Larch is one of the important characteristics of the heartwood. The high natural corrosion resistance and good mechanical properties make this wood widely available