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Accueil du site → Doctorat → Allemagne → Water-use, discrimination and temporal variation of C4 plants in the Inner Mongolia grassland

Technischen Universitat Munchen (2010)

Water-use, discrimination and temporal variation of C4 plants in the Inner Mongolia grassland

Yang, Hao

Titre : Water-use, discrimination and temporal variation of C4 plants in the Inner Mongolia grassland

Wassernutzung, Diskriminierung und zeitliche Variation der C4 Pflanzen im Grasland der Inneren Mongolei

Auteur : Yang, Hao

Université de soutenance : Technischen Universitat Munchen

Grade : Doktors der Naturwissenschaften 2010

Résumé
The subject of present thesis was the variation of the carbon isotope discrimination of C4 plants in the Inner Mongolia grassland. The water use and discrimination of dominant C4 species and the discrimination and proportion of C4 annuals and C4 perennials were studied. The dominant C4 species, Cleistogenes squarrosa, mainly used surface soil water and its discrimination was influenced by biotic and abiotic factors that affect leaf nitrogen content. C4 annuals decreased and C4 perennials increased from 2001 to 2009. The average of C4 annuals was 45%. The mean of discrimination of C4 annuals and C4 perennials are 5.6‰ and 7.2‰. The value of 6.5‰ can be used as the discrimination of C4 plants.

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Page publiée le 1er janvier 2016, mise à jour le 10 janvier 2019