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一、森林概况及主要造林树种瑞典地处斯堪的纳维亚半岛的东部,位于北纬55°21′—69°04′之间。总上地面积4100多万公顷,湖泊、其它航道400多万公顷,沼泽地700多万公顷,森林面积2340万公顷,耕地300多万公顷,森林覆盖率为57%。瑞典南北气候相差悬殊,年平均气温:北部2—3℃,中部5—6℃,南部7—8℃。年降雨量:东北部为300—500mm,西南部为1000—1200mm,平均为600mm。林木生长期:北部90—100天,南部170天。但是,由于瑞典的气候受大西洋墨西哥暖流的影响,它的天气比同纬度的其它地方,如格陵兰岛的南部和阿拉斯加要暖和得多,气温高出10℃左右。加之瑞典气候受低气压影响大,雨雪较多,大气湿度高,森林
I. Forest Overview and Major Afforestation Species Sweden is located in the eastern part of the Scandinavian Peninsula at latitudes 55 ° 21’-69 ° 04’N. The total land area of more than 41 million hectares, lakes, other waterways more than 400 million hectares, more than 700 million hectares of wetlands, forest area of 23.4 million hectares, more than 300 million hectares of arable land, forest coverage rate of 57%. South-North Sweden climate disparities, the annual average temperature: 2-3 ° C in the north, 5-6 ° C in the middle and 7-8 ° C in the south. Annual rainfall: northeast 300-500mm, southwestern 1000-1200mm, with an average of 600mm. Forest growth period: 90-100 days in the north, 170 days in the south. However, due to the warm climate of the Atlantic Ocean in Mexico, Sweden’s climate is warmer than other parts of the same latitude, such as southern Greenland and Alaska, and the temperature is about 10 ° C higher. Coupled with the Swedish climate by the impact of low pressure, rain and snow more, high humidity, the forest