Geographical Distribution and Relationship with Environmental Factors of Paphiopedilum Subgenus Brachypetalum Hallier (Orchidaceae) Taxa in Southwest China

doi:10.3390/d13120634

	Geographical Distribution and Relationship with Environmental Factors of Paphiopedilum Subgenus Brachypetalum Hallier (Orchidaceae) Taxa in Southwest China
	Ye, Pengcheng ; Wu, Jianyong ; An, Mingtai 1; Chen, Hui ; Zhao, Xiao ; Jin, Xiaohua2 ; Si, Qin
	2021
发表期刊	DIVERSITY-BASEL
卷号	13 期号:12
摘要	The determination of the geographic distributions of orchid species and their relationships with environmental factors are considered fundamental to their conservation. Paphiopedilum subgenus Brachypetalum is one of the most primitive, ornamental, and threatened groups of Orchidaceae. However, little is known about the distribution of Brachypetalum orchids and how they are influenced by environmental factors. In this study, we developed a database on the geographical distribution of Brachypetalum orchids based on a large-scale field investigation in the Guangxi, Guizhou, and Yunnan provinces of southwest China (2019-2020). Using this database, we first adopted the nonparametric Mann-Whitney U test to analyze the differences in the geographical distributions and growth environments of Brachypetalum orchids. In addition, we also used the method of principal component analysis (PCA) to explore distribution patterns of Brachypetalum orchids in relation to environmental factors (topography, climate, anthropogenic disturbance, productivity, and soil) in southwest China. Our results indicated that Brachypetalum orchid species were mainly distributed in the karst limestone habitats of southwest China. In general, there were 194 existing localities with the occurrence of seven target orchids in the investigated area. Of the discovered species in our study, 176 locations (~90.7%) were distributed primarily in the karst habitat. Among them, the range of 780-1267 m was the most concentrated elevation of Brachypetalum orchids. In addition, the findings also suggested that the distribution of Brachypetalum orchids in southwest China was relatively scattered in geographical space. However, the density of the distribution of Brachypetalum orchids was high, between 104 degrees and 108 degrees E and between 25 degrees and 26 degrees N. The results of the Mann-Whitney U test revealed that there are obviously different geographical distributions and growth environments of Brachypetalum in southwest China. More specifically, we found some extremely significant differences (p < 0.001) in elevation, mean diurnal range, precipitation of coldest quarter, solar radiation, and exchangeable Ca2+ between the provinces of southwest China. The PCA analysis revealed that elevation, solar radiation, temperature (mean diurnal range, annual temperature range) and precipitation (precipitation seasonality, precipitation of the warmest quarter) were found to be the most significant factors in determining Brachypetalum orchids' distribution. These findings have implications in assessing conservation effectiveness and determining niche breadth to better protect the populations of these Brachypetalum orchid species in the future.
关键词	biodiversity Brachypetalum conservation environmental factors Orchidaceae pattern southwest China threatened
学科领域	Biodiversity Conservation ; Ecology
DOI	10.3390/d13120634
收录类别	SCI
语种	英语
WOS关键词	SEED-GERMINATION ; CONSERVATION ; ELEVATION ; RICHNESS ; PATTERNS ; LATITUDE
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000736641300001
出版者	MDPI
文献子类	Article
出版地	BASEL
EISSN	1424-2818
作者邮箱	yepcnies@sina.com ; wujy10@hotmail.com ; gdanmingtai@126.com ; beisu423@yeah.net ; zerlina_23@163.com ; xiaohuajin@ibcas.ac.cn ; chaoyuesiqin@sina.com
作品OA属性	gold, Green Published
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/26545
专题	系统与进化植物学国家重点实验室
作者单位	1.Minist Ecol & Environm Peoples Republ China, Nanjing Inst Environm Sci, Nanjing 210042, Peoples R China 2.Guizhou Univ, Coll Forestry, Guiyang 550025, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Ye, Pengcheng,Wu, Jianyong,An, Mingtai,et al. Geographical Distribution and Relationship with Environmental Factors of Paphiopedilum Subgenus Brachypetalum Hallier (Orchidaceae) Taxa in Southwest China[J]. DIVERSITY-BASEL,2021,13(12).
APA	Ye, Pengcheng.,Wu, Jianyong.,An, Mingtai.,Chen, Hui.,Zhao, Xiao.,...&Si, Qin.(2021).Geographical Distribution and Relationship with Environmental Factors of Paphiopedilum Subgenus Brachypetalum Hallier (Orchidaceae) Taxa in Southwest China.DIVERSITY-BASEL,13(12).
MLA	Ye, Pengcheng,et al."Geographical Distribution and Relationship with Environmental Factors of Paphiopedilum Subgenus Brachypetalum Hallier (Orchidaceae) Taxa in Southwest China".DIVERSITY-BASEL 13.12(2021).

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