一、珍贵阔叶用材乡土树种的概念及种类 (一)、概念在自然界中,经过漫长的自然选择及生存竞争,能够在当地长期生存下来的树种,称为乡土树种。其中具有速生、丰产、优质的阔叶用材树种,即称为珍贵阔叶用材乡土树种。概括地说:珍贵阔叶用材乡土树种应具有一定的生态性状和经济性状。珍贵树种的广义概念:可谓之好而稀的树种,称为珍贵树种。 First, the concept of precious broadleaf timber native species and species (A), concept In nature, after a long period of natural selection and survival competition, can survive in the local long-term species, known as native tree species. Which has fast-growing, high yield, high-quality broad-leaved timber species, namely the precious broad-leaved timber native tree species. In a nutshell: Native species of precious broadleaf wood should have some ecological and economic traits. The general concept of precious species: can be described as good and rare species, known as precious species.