摘要
以吉林省蛟河林业实验区管理局的森林为研究对象,利用GIS技术将林相图与DEM进行叠置分析,研究不同坡度森林分布的特征,结果表明:阔叶林在25°以下坡度所占比重为93.4%,25°～35°坡度范围内为5.5%,35°～45°坡度范围内为0.9%,45°坡度以上的为0.2%。幼龄林在不同坡度上分布基本一致,均为2%;中龄林随坡度的增加依次为31%、21%、19%、15%;近熟林所占比重在25°坡度以下为38%,在25°～35°坡度上为34%,在35°～45°坡度上为38%,45°以上为48%;成熟林依次为21%、34%、34%、32%;过熟林依次为5%、9%、7%、4%。
The characteristics of forestry distribution along slope were studied in Jiaohe forest management bureau of Jilin province.The overlay analysis of stock map and DEM was accomplished by the GIS technology.The results showed that the percentages of broad-leaved forest were 93.4%,5.5%,0.9% and 0.2% if the slope was lower than 25°,between 25°~35 °,between 35 °~45 ° and higher than 45 °.The percentage of juvenile forest was basically consistent on different slopes,which was about 2%.The percentages of middle-aged forest were 31% 、21% 、19% 、15% as the slope increased as above.The percentage of pre-mature forest were 37.8%,34.3%,37.5% and 47.5%,the percentage of mature forest were 21%,34%,34%,32%,and the;over-mature forest were 5%、 9%、 7% 、4%.
出处
《吉林林业科技》
2012年第1期23-26,共4页
Journal of Jilin Forestry Science and Technology
关键词
森林资源
GIS
坡度
分布特征
forest resource
GIS
slope
distribution characteristics
