库布齐沙漠种子植物区系研究

The Flora of Seed Plants in Kubuqi Desert

以2018年库布齐沙漠的植被调查结果为基础,结合采集的植物标本、中国自然标本馆(CFH)馆藏资料和相关文献对库布齐沙漠种子植物区系进行了分析。结果表明:(1)库布齐沙漠共有种子植物261种,隶属56科168属,相较于邻近地区植物种类较少,多样性不高,特异性较低。(2)在科的级别上分析,本区系以世界广布科为主;在属的层次上分析,本区系以温带成分占绝对优势,温带荒漠特征属、种的出现反映出本区系的温带干旱荒漠性质。(3)植物生活型以草本为主,灌木是主要的建群种和优势种;植物水分生态型主要为旱生、中生和旱中生,水生植物数量最少。

Based on the results of the vegetation survey in Kubuqi Desert in 2018,the flora of seed plants in Kubuqi Desert was analyzed in combination with the collected plant specimens, the Chinese Natural Herbarium(CFH) collection data and the related literatures. The results show that there are 261 species of seed plants in Kubuqi Desert, belonging to 168 genera and 56 families. Compared with the adjacent areas, there are fewer species, low diversity and low specificity. At the level of families, the flora is dominated by the world’s widespread families. At the level of genera, temperate elements are dominant in the flora, and the emergence of temperate desert characteristic genera and species reflects the feature of temperate drought and desert in the flora. Herbs are the main plant life forms, shrubs are the main constructive species and dominant species, while xerophytes, mesophytes and xerophytes are the main plant water ecotypes, and the number of aquatic plants is the least.