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油松(Pinus tabulaeformis Carr)是我国北方主要造林树种,它自然分布在北纬31°20′至43°33′之间,东径102°00′至124°45′之间,广达十二个省区。我省除河西走廊及其北山地带外,陇东、陇西高原及陇南山地均有天然的油松林,总面积约70万亩。油松不但分布广,而且营造范围大,在我省造林中占有重要位置。由于油松在地理上分布范围很广,受不同自然环境条件的长期影响而产生变异,形成了
Pinus tabulaeformis Carr is the main afforestation species in northern China. It is naturally distributed between latitudes 31 ° 20 ’and 43 ° 33’ and longitudes 102 ° 00 ’and 124 ° 45’ Provinces and provinces. In addition to the Hexi Corridor and its northern Beishan Strip, there are natural Pinus tabulaeformis forests in Longdong, Longxi Plateau and Longnan Mountains with a total area of about 700,000 mu. Pine is not only widely distributed, but also to create a wide range of afforestation in our province occupies an important position. Due to the geographical distribution of Pinus tabulaeformis broad, subject to long-term effects of different natural conditions and mutation, formed