Photosynthetica 2004, 42(2):219-227 | DOI: 10.1023/B:PHOT.0000040593.18169.18

Photosynthetic Pathways and Life Form Types for Native Plant Species from Hulunbeier Rangelands, Inner Mongolia, North China

R.Z. Wang1
1 Laboratory of Quantitative Vegetation Ecology, Institute of Botany, the Chinese Academy of Sciences, Xiangshan, Beijing, 100093, China, e-mail

Photosynthetic pathway Types (C3, C4, and CAM) and life forms of native species from Hulunbeier rangelands, north China were studied. Of the total 258 species, 216 species in 132 genera and 42 families had C3 photosynthetic pathway, including dominant herbs, e.g. Stipa baicalensis Roshev. and Leymus chinensis (Trin.) Tzvel., Filifolium sibiricum Kitam. and Arudinella hirta (Thunb.) Koidz. 38 species in 28 genera and 10 families were found with C4 photosynthesis, and 4 species in 2 genera and 1 family had CAM photosynthetic pathway. The occurrence of C4 species was common in Gramineae and Chenopodiaceae, and the two families were leading ones within C4 plants. More than 52 % of the total 258 species were in H form, 21 % in Th form, 19 % in G form; the other life form Types, e.g. Ch, M, N, and HH, formed less than 3 %. 68 % of C4 species were in Th form and 24 % in H form, indicating that these Types were the dominant life forms for C4 species in the rangeland region. The occurrence of C4 species was closely related with plant habitats, disturbed lands had the highest C4 abundance (55 % of the total C4 species), followed by grasslands and sandy soil, and forests had the lowest C4 abundance (8 %). Hence the occurrence of C4 species could be efficient indicator for rangeland dynamics in Hulunbeier rangelands.

Additional key words: C3, C4 and CAM plants; meadow and steppe

Published: June 1, 2004  Show citation

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Wang, R.Z. (2004). Photosynthetic Pathways and Life Form Types for Native Plant Species from Hulunbeier Rangelands, Inner Mongolia, North China. Photosynthetica, 42(2), 219-227. doi: 10.1023/B:PHOT.0000040593.18169.18
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