摘要
对秦岭９个不同海拔高度、７种不同类型植被下表土的花粉分析结果表明：秦岭各种类型植被下表土的花粉组合基本反映了相应的植被组成；松属花粉在秦岭散布的距离较远，表土中很高的花粉含量与植被组成中松的数量间缺乏相关性；在总的花粉产量中，相当数量的花粉是原地降落，如板栗、落叶松和冷杉等；冷杉花粉的代表性较低，传播距离很近，冷杉林下冷杉花粉仅占草本和木本花粉总量的１９．５％，占木本的２１．７％。
The results of pollen analysis of surface soil samples from the Qinling Mountains showed:1.Pollen assemblages of surface soil samples from different vegetation types generally reflected their vegetation composition.2. Pinus was a large pollen-producer and its pollen was easily to be disperesed. Therefore Pinus pollen was always over-represented. 3.A large amount of tree pollen fell in their original location, such as Carstanea,Larix, Abies ,etc.4. Abies pollen was under-represented and could spread only a short distance. Under Abies forest,the pollen made up only 19.5 per cent of the total pollen of herbs and trees, and 21.7 per cent of woody plants.
出处
《西北林学院学报》
CSCD
北大核心
1999年第1期1-5,44,共6页
Journal of Northwest Forestry University
基金
国家自然科学基金
关键词
秦岭
表土
植被
花粉分析
Qinling Mountains
surface soil sample
vegetation
pollen analysis
