浑江市地处长白山西麓,属于吉林省东南部山区。该地区林业用地面积较大,占全市总面积的78.6％,其中:无林地及灌木林占10.5％,是培育后备森林资源的良好基地。建国以来全市利用无林地和灌木林地营造许多人工林,其中落叶松人工林占人工林面积的78.5％。在各种落叶松中,日本落叶松在印象中是较好的树种,为了对其作出客观的科学评价,我们结合森林资源复查,对日本落叶松生长情况进行了考察。现将考察结果初报如下: 一、日本落叶松的引种历史及方法日本落叶松(Larix leptolepts “siebetzuce” Gordon),原产日本本岛,所处的地理位置为北纬35°20′～38°10′,东经136°45′～140°30′的范围内,垂直分布在海拔1200～2500米 Hunjiang City is located in the western foot of Changbai Mountain, belonging to the southeastern Jilin Province mountains. The area of ​​forestry land in this area is larger, accounting for 78.6% of the total area of ​​the city, including 10.5% of non-forest land and shrubbery, which is a good base for cultivating reserve forest resources. Since the founding of the People’s Republic of China, many plantations have been built using non-woodland and shrub land, in which larch plantations account for 78.5% of the plantation area. Among various larches, Japanese larch is the better tree species in impression. In order to make an objective scientific evaluation, we conducted a review of the growth of Japanese larch with the review of forest resources. The first report of the investigation results are as follows: First, the introduction history and methods of Japanese larch Larix leptolepts (siebetzuce "Gordon), native to Japan, the island, the geographical location of 35 degrees north latitude 35 ° 10 ’east longitude 136 ° 45’ ~ 140 ° 30 ’within the vertical distribution of 1200 ~ 2500 meters above sea level