摘要
西林吉林业局位于漠河县境内,东经121°29′-123°11′,北纬52°47′-53°20′;属中低山山地地貌,母岩以酸性侵入岩和中性火成岩为主,常见花岗岩;地带性植被为兴安落叶松(Larix gmelinii)林;年均气温-4.9℃,极端最低气温-52.3℃,极端最高气温达36.8℃≥10℃积温为1650.4℃,年均雨量约为403.4mm,集中在7-8月,无霜期约92d,属寒温带气候。
On the basis of investigation of sample plots, statistical analysis demons-trate the relationship between site factors and natural Larix gemlini growth.The dominant factors are found by three multiple statistical analysis (quantizedmodel-1, general variance analysis and principal component analysis). Theorder according to their importance is: copographical position, soil layer de-pth, slope aspect, slope gradient and soil moisture. Site type groups and sitetypes are divided according to the dominant factors. This investigation mayprovide the bases for predicting forest land productive forces and working outreasonable afforestation plan.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1993年第5期456-462,共7页
Scientia Silvae Sinicae
关键词
落叶松
兴安落叶松
立地条件
Forest site
Natural Larix gemlini forest
Site type
Multiple statistical analysis
