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秦岭种子植物区系中的北温带区系成分研究
张秦伟
咸阳师范学院地理系 陕西咸阳712000
摘要:
北温带成分是秦岭种子植物区系组成中的优势成分 ,共有 2 2 5属 ,属数占秦岭所有种子植物总属数的 2 4 .0 8% ,占中国种子植物区系北温带成分总属数的 74 .5 0 %。该类成分在秦岭地区不仅丰富 ,而且是本区植被区系组成的优势成分 ,其起源则有明显的热带性质
关键词:  植物区系    北温带成分    性质    特点    起源    秦岭
DOI:
分类号:
Fund project:陕西省教育委员会自然科学基金资助项目 (95 JK0 41)
Abstract:
Key words:  
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