| 摘要: |
| 基于野外实地调查、植物标本采集与鉴定及文献研究的方法，分析了屈吴山省级自然保护区维管植物组成和分布区类型。结果表明：屈吴山省级自然保护区内植物共计50科108属157种，其中蕨类植物1科1属1种；裸子植物4科8属13种；被子植物45科99属143种，蕨类植物和裸子植物比较贫乏。保护区内植物科的组成以单种科和寡种科为主，单种科23科76属，占该区维管植物总科数的46.00%；寡种科22科31属，占该区维管植物总科数的44.00%。以蔷薇科（Rosaceae）、禾本科（Gramineae）、菊科（Compositae）、豆科（Leguminosae）、卫矛科（Celastraceae）、榆科（Ulmaceae）和松科（Pinaceae）为优势科。在科级水平上，划分为9个分布区和2个变型，科以世界广布科和北温带分布占优势，温带科（42.00%）高于热带科（24.00%）；在属级水平上，划分为12个分布区和6个变型，温带属（75.93%）明显高于热带属（9.26%），温带地理成分占绝对优势，尤其以北温带分布为主。研究屈吴山省级自然保护区维管植物区系地理分布特征，为保护该区生物多样性和开展相关植物研究提供可靠依据。 |
| 关键词: 维管植物 植物区系 分布区类型 屈吴山省级自然保护区 |
| DOI：10.14188/j.ajsh.2023.01.008 |
| 分类号:Q948 |
| 基金项目:甘肃省财政厅甘肃省GEF/OP12项目办公室项目（03619078） |
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| Floristic characteristics of vascular plants in Quwu Mountain Provincial Nature Reserve |
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YANG Yanyan, ZHOU Xiaolei, LIU Xiaojuan, ZHOU Yuxia, SU Jingyi
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College of Forestry， Gansu Agricultural University， Lanzhou 730070， Gansu， China
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| Abstract: |
| This paper reports an analysis of the species composition and distribution types of vascular plants in Quwu Mountain Provincial Nature Reserve， based on field investigation， plant specimen collection and literature research. The results showed that there are 157 species of vascular plants present in the study area， which belong to 108 genera and 50 families， among which 1 species 1 genus and 1 family are pteridophytes， 13 species， 8 genera and 4 families are gymnosperms， and 143 species， 99 genera and 45 families are angiosperms. The pteridophytes and gymnosperms are relatively poor. The composition of plant families in the conservation area is dominated by monospecies families and oligospecies families. There are 23 families and 76 genera of monospecies families accounting for 46.00% of the total number of vascular plant families in the area. There are 22 families and 31 genera of oligospecies families accounting for 44.00% of the total number of vascular plant families in this area. Rosaceae， Gramineae， Compositae， Leguminosae， Celastraceae， Ulmaceae and Pinaceae are dominant families. At the family level， it is divided into 9 distribution types and 2 sub-types. The distribution families are dominanted by the cosmopolitan type family and the North Temperate family. The temperate families （42.00%） are higher than the tropical families （24.00%）.At the genus level， it is divided into 12 distribution types and 6 sub-types. The temperate genera （75.93%） are obviously higher than the tropical genera （9.26%）， and the temperate geographical distribution type is dominant ，especially those of North Temperate distribution. This study provide a reliable basis for biodiversity conservation and related plant research. |
| Key words: vascular plant flora distribution type Quwu Mountain Provincial Nature Reserve |
