昌宁县不同地形因子对旱冬瓜生长影响研究

指出了旱冬瓜材质好、树皮厚且枝叶浓密，木材生产效益和蓄水绿化等生态效益都较好，可适用的造林范围广，宜于发展的地区较多，群众多喜欢用于造林，但旱冬瓜对湿度和温度的要求较高，在干旱和霜冻寒冷地区生长不良，总结了昌宁县不同海拔、坡向、坡度、坡位条件下旱冬瓜人工造林生长情况，供营林造林者参考。

Impact Study of Different Terrain Factors on the Growth of Alnus Nepalensis in Changning County

Alnus nepalensis, with good material, thick barks and dense foliage, has good ecological benefits, such as benefits of timber production,reservoir greening benefits, etcl. This kind of trees are often used for afforestation because of wide applicable range. But Alnus nepalensis has higher requirement of humidity and temperature, therefore, it cannot grow well in drought and frost cold regions. This article summarizes the growth conditions of Alnus nepalensis in Changning County under different conditions, such as different altitudes, slope directions, slope degrees and slope position, so as to provide references for afforestation.