Biodiversity Science ›› 2011, Vol. 19 ›› Issue (4): 414-423.doi: 10.3724/SP.J.1003.2011.10289

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Geographic patterns of endemic seed plant genera diversity in China

Shengbin Chen1, Zhiyun Ouyang1*, Yu Fang1, Zhenji Li2   

  1. 1State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085

    2School of Life Sciences, Xiamen University, Xiamen, Fujian 361005
  • Received:2010-12-03 Revised:2011-04-16 Online:2011-07-29
  • Zhiyun Ouyang E-mail:zyouyang@rcees.ac.cn

Endemism describes the phenomenon that the distribution of individual species/taxa is critically restricted to a specific region. Seed plant genera endemic to China (endemic genera) are those with their main geographic distribution range within the borders of China. The geographic patterns of endemic genera can not only guide conservation planning, but these organisms are also important biological resources. We gath-ered data of 173 localities on environmental and spatial factors, and regional seed plant genera richness (GRN), endemic genera richness (EGRN) and endemic genera ratio (EGR), which was calculated by dividing EGRN by GRN. Multiple regression and variance partitioning were used to examine how environmental and spatial variables affect GRN, EGRN, and EGR. Our results showed that: (1) EGRN and EGR had stronger spatial variability than GRN, with highest values (richness and ratio) in central China and lower near national borders and continental edges. GRN exhibited an evident latitudinal gradient. (2) EGRN and EGR were mainly determined by habitat heterogeneity and spatial factors. Regional theoretical EGR was constrained by its geographical location, and was further adjusted by habitat heterogeneity (topographical complexity) and climatic factors. Geographical patterns of GRN, on the other hand, were mainly determined by climatic con-ditions and habitat heterogeneity rather than spatial factors. (3) Seed plant genera endemic to China could be rather difficult to define, and probably reflected inadequate information on phylogenetic evolution of local flora. Further studies are needed to examine the variance explained by spatial factors through a phylogenetic lense. Finally, flaws in the definition and classification of seed plant genera endemic to China were dis-cussed. Theoretically, genera endemic to China should not be defined according to the political borders. But, in practice, nearly all the lists of seed plant genera endemic to China proposed by several authors were based on the relationship between the geographic distribution of specific genus and national borders. Thus, we recommend that, the concept of seed plant genera endemic to China should be used carefully in both theo-retical research and biodiversity conservation practices.

Anderson S. (1994) Area and endemism. Quarterly Review of Biology, 69, 451-471.

Chang H(张宏达) (1997) Plant endemism and biodiversity. Ecologic Science (生态科学), 16, 9-17. (in Chi-nese with English Abstract)

Feng J, Zhu Y. (2010) On the genera of seed plants endemic to China in Yunnan. Ecology and Environ-mental Sciences (生态环境学报), 19, 621-625.

Hao R(郝日明) (1997) On the areal-types of the Chinese endemic genera of seed plants. Acta Phytotax-onomica Sinica (植物分类学报), 35, 500-510. (in Chinese with English Abstract)

Li X-W(李锡文) (1994) Two big biodiversity centres of Chinese endemic genera of seed plants and their characteristics in Yunnan province. Acta Botanica Yunnanica (云南植物研究), 16, 209-220. (in Chinese with English Abstract)

Shen Z-H(沈泽昊), Zhang X-S(张新时) (2000) A quantitative analysis on the floristic elements of the Chi-nese subtropical region and their spatial patterns. Acta Phytotaxonomica Sinica (植物分类学报), 38, 366-380. (in Chinese with English Abstract)

Wang H(王荷生), Zhang Y(张镱锂) (1994) The distribution patterns of spermatophytic families and genera endemic to China. Acta Geographica Sinica (地理学报), 49, 403-417. (in Chinese with English Abstract)

Wang H-S(王荷生) (1989) A study on the origin of spermatophytic genera endemic to China. Acta Botanica Yunnanica (云南植物研究), 11, 1-16. (in Chinese with English Abstract)

Wang H-S(王荷生), Zhang Y-L(张镱锂) (1994) The biodiversity and characters of spermatophytic genera endemic to China. Acta Botanica Yunnanica (云南植物研究), 49, 403-417. (in Chinese with English Ab-stract)

Ying T(应俊生) (1996) Areography of the endemic genera of seed plants in China. Acta Phytotaxonomica Sinica (植物分类学报), 34, 479-485. (in Chinese with English Abstract)

Ying T-S(应俊生) (2001) Species diversity and distribution patterns of seed plants in China. Biodiversity Science (生物多样性), 9, 393-398. (in Chinese with English Abstract)

Zhu H(朱华) (2008) Distribution patterns of genera of Yunnan seed plants with references to their bio-geographical significances. Advances in Earth Science (地球科学进展), 23, 830-839. (in Chinese with Eng-lish Abstract)

Zhu H, Ma Y-X, Yan L-C, Hu H-B. (2007) The relationship between geography and climate in the ge-neric-level patterns of Chinese seed plants. Acta Phytotaxonomica Sinica (植物分类学报), 45, 134-166.
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