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瑞典的森林面积为2230万公顷左右,为波兰森林总面积的三倍。主要是松树和云杉。橡林和水青冈林仅见于瑞典南部和中部的部分地区。南部和中部常见的混交阔叶树种,有桦树和山杨。瑞典气候严寒,林木的生长期比欧洲大陆短得多,但林况良好(天然更新好,人为扰乱少),因此,仅是某些森林害虫有大量出现的趋势,但分布面
Sweden has a forest area of about 22.3 million hectares, three times the total area of Poland’s forests. Mainly pine and spruce. The forests of Acacia and Merbau are found only in parts of southern and central Sweden. The common mixed broadleaf species in the southern and central parts are birch and aspen. Sweden has a very cold climate and its growing season is much shorter than that of the European continent. However, the condition of the forest is good (natural regeneration is better and human disturbance is less). Therefore, there are only a few forest pests that show a large number of emerging trends. However,