滇西北地区地形复杂,气候寒冷,每拔一般在2400米左右,部分地区甚至超过4500米,且地形起伏很大,形成典型的深阱峡谷地貌和典型的立体气候区域。但本区森林资源较为丰富,总面积1.3亿亩,森林畜积量3.76亿立方米,出材量1.17亿立方米。是全国主产木材的八大林区之一。此外,本地区处于我国的第一大江——长江的上游,因而,它不仅为国家提供木材产品,更重要的是为整个长江流域及毗邻地区提供良好的生态环境。但是,近三十年来,由于造林成活率低,经营粗放种种原因,森林资源的消耗仍超过生长量,这样下去是很危险的。如何提高滇西北高寒山区的造林成活率,我们想谈谈几点粗浅意见。首先,我们觉得,滇西北高寒山区造林中还存在一些问题: 1.适地适树。高寒山区由于自然条件的特殊性,树种的选择对造林成败有着直接关系,例如丽江县 In Northwest Yunnan, the terrain is complex and the climate is cold. Each pull is generally about 2,400 meters, even more than 4,500 meters in some areas, and the terrain fluctuates greatly to form the typical Deep Well Canyon landscape and the typical three-dimensional climate area. However, the area is rich in forest resources, with a total area of ​​130 million mu, a forest livestock stock of 376 million cubic meters and an output of 117 million cubic meters. It is one of the eight major forest areas that produce timber in China. In addition, the region is located in the upper reaches of the Yangtze River, the country’s largest river. Therefore, it not only provides timber products to the country, but more importantly, provides a good ecological environment for the entire Yangtze River and its adjacent areas. However, in the recent three decades, due to the low survival rate of afforestation and the extensive management, the consumption of forest resources still exceeds the growth, which is very dangerous. How to improve the survival rate of afforestation in alpine mountainous area in northwest Yunnan? We’d like to talk about some superficial opinions. First of all, we think there are still some problems in afforestation in alpine mountainous areas in northwestern Yunnan: 1. It is suitable for trees. Due to the particularity of the natural conditions in alpine mountainous areas, the choice of tree species has a direct bearing on the success or failure of afforestation. For example, Lijiang County