摘要
本文对宁夏大罗山主要植物群落建群种的区系组成进行详细分析 ,表明 :乔木林建群种 :油松、青海云杉是中国特有种 ,也是华北—西北特有成分 ;辽东栎、山杨、小叶杨是中国—日本分布种 ,皂柳、白榆是东亚种 ,白桦是温带亚洲分布种 ;灌丛大多数是原生植被破坏后的次生植被类型 ,植物区系成分复杂 ,有北温带成分、温带亚洲成分 ,旧大陆温带成分 ,东亚成分、中亚成分等 ;荒漠植被中的建群种都属于古地中海植物 ,并以中亚东部的植物地理成分占优势 。
This paper analysed the floristic structure of the dominative plant species in principal plant communities. The author finded that Pinus tabulatformis and Picea crossifolia are the endemic distributive types in China and especially in the North China——Northwest,Quercus liaotungensis, Populus davidiana and Populus simohii are the endemic distrbutive types of China——Japan.Salix wallichiana and Ulmus pumila are the endmic distributive types of East Asia. Betula platyphylla is the endemic distributed type of temperate zone of Asia in Daluo Mountain forest. The scrub forest in Daluo Mountain forms the secondary vegetation after destroying primary forest. Its floristic structure is complex. there are the endemic distributiive types of North Temperature. Temperate Asia, Old World Temperate, East Asia, Middle Asia in the scrub forst. The dominate plant species in the wilderness vegetation belongs the endemic distributive type of old Mediteranea. The geographical distributive type of East Middle Asia dominative in the wildernness vegetation. It showsed that the close relation of the floristtic structure between the wilderness vegetation in Daluo Mountain and Mediteranea vegetation.
出处
《宁夏农学院学报》
2000年第2期43-45,56,共4页
Journal of Ningxia Agricultural College
关键词
大罗山
区系成分
建群种
植物群落
Daluo Mountain floristic structure the dominate species in the plant communities
