Phytogeographical relationships of the bryophytes between China and North America

doi:10.7523/j.issn.2095-6134.2001.6.005

Abstract

Abstract:

In this paper, we analysed in detail both hepatic flora and moss flora of China and North

America to have a better understanding of the bryological relationships between these two continents.

The results show that the similarity coefficient of the bryophytes between China and North America is

very high (up to 88.03%) at the family level, but very low (only 18.88%) at the species level.

Although the separation of the two ancient continents started in the late Cretaceous, the bryophytes

between China and North America with respect to the composition of families and genera are still

close. Nevertheless both continents have had their own endemic genera of liverworts and mosses.

There are five East Asiatic endemic genera of liverworts and 22 East Asiatic endemic genera of moss-

es in China, while there are four liverwort genera and five moss genera endemic to North America.

It is noteworthy that the bryological relationships between eastern North America and China show a

quite different pattern from those between western North America and China with respect to the fami-

lies, genera and species. The sexuality of plants and the size of spores of liverworts and mosses may

not be the main factors that have influenced the distribution of the bryophytes in China and North

America, although they are of some importance for the distribution of bryophytes. Various informa-

tion concerning the bryological relationships between China and North America (including the simi-

larity coefficients of the bryophytes of China and North America at different levels, their endemic

genera, the sibling species of the two continents, the geological history and physical geograhical

conditions of China and North America, and the biological characters of bryophytes) has been anal-

ysed. It is considered that there exist close bryological relationships between China and North Amer-

ica, although in these two separated continents some local and endemic genera had been formed after

the Cretaceous. Both bryofloras have been influenced by those of their neighbouring regions, and the

Bering Strait may not be a natural barrier to prevent the bryological exchange between China and

North America. In summary, the present relationships of the bryofloras between China and North

America have been formed not under the influence of one simple facter or event but under a compre-

hensive influence of many factors or events during the geological history.

Key words: Bryoflora, Floristic relationship, China, North America

WU Peng-Cheng, JIA Yu, WANG Mei-Zhi. Phytogeographical relationships of the bryophytes between China and North America[J]. , 2001, 39(6): 526-539.

[1]	ZHENG Yiru, ZHAO Junchao, GONG Shufang, WANG Jin. Effects of NaHCO₃ and Na₂CO₃ stress on seed germination, seedling growth, and physiological indexes of Puccinelia chinampoensis and Elymus dahuricus [J]. Journal of University of Chinese Academy of Sciences, 2021, 38(2): 228-239.
[2]	LI Jia, TANG He, RAO Weilong, ZHANG Lan, SUN Wenke. Influence of South-to-North Water Transfer Project on the changes of terrestrial water storage in North China Plain [J]. , 2020, 37(6): 775-783.
[3]	GU Yongjian, LI Yumei, HAN Long, SU Xin. Relationships between surface soil magnetic susceptibility and modern climatic factors in eastern China and their environmental significance [J]. , 2019, 36(4): 498-509.
[4]	BI Kaiyi, NIU Zheng, HUANG Ni, KOU Peiying. Effects of road network on landscape ecological risk: a case study of “China and Indochina Peninsula economic corridor” [J]. , 2019, 36(3): 347-353.
[5]	YANG Zhen, LEI Jun. Spatio-temporal pattern and influencing factors of urbanization development of cities at prefecture level and above in China [J]. , 2019, 36(1): 82-92.
[6]	LIU Xianzhao, ZHANG Yong, SU Qing, LI Zhenguo, FENG Teng, SONG Yan. Gradient variation of δ¹⁵N values in herbs and its indication to environmental information in the agro-pastoral ecotone in the north of China [J]. , 2018, 35(6): 749-760.
[7]	JIA Xiaoting, LEI Jun, ZHANG Xiaolei. Social spatial structure of Urumqi City during the period of Republic of China [J]. , 2018, 35(6): 795-804.
[8]	WANG Linfeng, ZHANG Pingyu, LI He, LIU Shiwei. Vulnerability of social-ecosystem in agro-pastoral ecotone in western Northeast China [J]. , 2018, 35(3): 345-352.
[9]	XIONG Lin, ZHANG Pingyu, TAN Juntao, LIU Wenxin. Spatial-temporal coupling characteristics between population structure and economic development in Northeast China [J]. , 2017, 34(3): 342-350.
[10]	CHANG Le, QIAN An, YI Shuang, XU Changyi, SUN Wenke. Sea level change in China adjacent seas studied using satellite altimeter, satellite gravity, and thermohaline data [J]. , 2017, 34(3): 371-379.
[11]	SHENG Yanwen, MA Yanji. Output efficiency and economic contribution of scientific and technological resources in the three provinces of Northeast China based on panel data of 34 prefectural cities [J]. , 2016, 33(5): 632-640.
[12]	HUANG Yawen, HUA Lijuan, ZHONG Linhao, FENG Shide. Characteristics of mesoscale eddies in South China Sea [J]. , 2016, 33(1): 97-106.
[13]	MA Xiaolei, MA Yanji. Efficiency evaluation of equipment manufacturing industries in Northeast China based on DEA model [J]. , 2015, 32(5): 627-634.
[14]	LIN Xueyan, LIN Jingqiang, GUAN Le, WANG Lei. China standard cryptographic algorithm implementation in virtual desktop system [J]. , 2015, 32(5): 701-707.
[15]	CHEN Xiaoqing, YU Xiangwei. Relocation of earthquakes in North China using absolute and relative earthquake relocation methods [J]. Journal of University of Chinese Academy of Sciences, 2015, 32(2): 243-251.

Phytogeographical relationships of the bryophytes between China and North America

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments