贵州省野生凤仙花属植物物种多样性与地理分布
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国家自然科学基金(31960328);


Species Diversity and Geographic Distribution of Wild Impatiens in Guizhou Province
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    摘要:

    该研究以贵州省野生凤仙花属植物为研究对象,在建立物种名录和地理分布数据库的基础上,对其物种多样性和地理分布格局进行研究。通过查阅文献资料和实地调查,从物种组成、特有性、水平分布、垂直分布和相似性等方面进行分析,最后采用筛除算法确定贵州凤仙花属植物分布的热点地区,为贵州省凤仙花属植物资源的研究和持续利用提供理论参考。结果表明:(1)贵州省凤仙花属植物共记载60种(含种下等级),分布于69个县级行政区,有55个中国特有种和10个贵州特有种,垂直分布以1 000~1 500 m海拔段最为丰富。(2)通过相似性系数分析,发现贵州与湖南的相似程度最高;并筛选得到9个热点县,共代表了86.67%的凤仙花属植物。(3)贵州省气候温暖湿润,具有典型的高原喀斯特地貌,凤仙花属植物的物种多样性和区域特有性明显。

    Abstract:

    In this study, the species diversity and geographical distribution pattern of wild Impatiens in Guizhou Province were studied based on the establishment of a list and geographical distribution database of wild Impatiens in Guizhou Province. Through the literature and a field investigation, we analyzed the species composition, endemism, horizontal distribution, vertical distribution and similarity. Finally, the hotspots of Impatiens in Guizhou were determined by a complementary algorithm,This study is of great significance to the conservation and sustainable utilization of Impatiens plant resources in Guizhou Province. The results show that: (1) there are 60 species (including subspecies) of Impatiens in Guizhou Province. These plants are distributed among 69 countylevel administrative districts. There are 55 species endemic to China and 10 endemic to Guizhou, and the vertical distribution is the most abundant at altitudes of 1 000~1 500 m. (2) The calculation of the provincial similarity coefficient showed that Guizhou and Hunan had the highest similarity. Finally, 9 hot spots were selected, representing 86.67% of the Impatiens plants. (3) Guizhou Province has a warm and humid climate with typical karst landforms, which have abundant Impatiens plant and have high species diversity and regional specificity.

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余 爽,李美君,袁桃花,等.贵州省野生凤仙花属植物物种多样性与地理分布[J].西北植物学报,2021,41(5):863-871

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  • 在线发布日期: 2021-06-22
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