作　　者： ; ; ; ; ;

机构地区： 中国科学院华南植物研究所

出　　处： 《东北林业大学学报》 2004年第2期26-28,共3页

摘　　要： 采用GIS技术对黑龙江省帽儿山林场老山生态实验站 1983年和 1999年的森林资源消长状况作了对比分析 ,结果表明 :老山生态实验站 16年间森林覆盖率降低 ;天然次生林分布范围缩小 ,人工林栽培面积增加 ;中龄林、近熟林、成熟林所占比例加大 ,幼龄林比例减少 ;主要优势树种樟子松、落叶松、红松、柞树的分布差异显著 ,落叶松分布面积缩小而红松分布范围扩大 ;胸径大于 10cm的优势树种 ,1999年的分布范围比 1983年有所增加。 A study was conducted to compare the changes of forest resources in Laoshan Experimental Ecological Station of Maoershan Forest Farm, Heilongjiang Province between 1983 and 1999 with the help of the Geographic Information System (GIS) technology. The result illustrates that the total forest distribution area in Laoshan Experimental Ecological Station has decreased. The distribution area of natural secondary forests has reduced while that of man-made forests has increased. The composition percentage of middle-aged forests, pre-mature forests and mature forests has increased but that of young stands has declined improperly. The distributions of the mainly dominant species such as Pinus sylvestris, Larix, Pinus koraiensis and Quercus mongolica have also changed in a certain degree. The distribution area of Larix has decreased and while that of Pinus koraiensis has extended. The distribution areas of some mainly dominant species with the average diameter at breast height larger than 10cm have increased.

关 键 词： 森林资源消长 地理信息系统 帽儿山林场 老山生态实验站 森林覆盖率 优势树种

领　　域： [农业科学] [农业科学]