论文部分内容阅读
精河林场属中亚山地植被区系,在林场境内生长的主要乔木树种为云杉,几乎为纯林,仅在河谷等个别地段有少许杨树及桦木。因本区缺乏前山带,受艾比湖干旱气候的影响,气候干旱,针叶林下限上升到海拔2 100 m以上,垂直带600 m左右。林下木分布极少,不少林分几乎无林下木。随着社会的发展,环境的变化,林业有害生物对林业发展已经构成了致命的威胁。精河林场自1958年建场以来,没有进行过森林有害生物项目普查,
Jinghe Forest Farm is a Central Asia mountainous flora and fauna. The main tree species growing in the forest farm is spruce, almost pure forest, with a few poplars and birch trees only in some areas such as river valleys. Due to the lack of anterior mountains in this area, due to the arid climate in Lake Aibi, the lower reaches of the coniferous forest have risen to more than 2100 m above sea level and about 600 m in the vertical zone due to the arid climate. Very few forest understory distribution, many forest almost no forest under the wood. With the development of society and environment, forestry pests have become a deadly threat to the development of forestry. Since its establishment in 1958 in Jinghe Forest Farm, no census of forest pests has been conducted,