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J Integr Plant Biol, 1994, 36 (8): -, Research Article
Characteristics and Quantitative Analysis of K, Na, Ca, Mg and S Contents in the Dominant Plant Species on the Hutubi Cattle Stock Farm Area, Xinjing
Kong Ling-shao, Ma Mao-hua and Pan Dai-yuan
doi:
Abstract
The characteristics on K, Na, Ca, Mg and S contents of 25 plant species were analysed at the grassland on the Hutubi Cattle Stock Farm area, Xinjiang. The level of content is in the order of Na>S>K>Mg>Ca. Different plant species have considerable variation in contents of Na and S, for example, the contents of Na and S are more than 100000 ppm and 30000 ppm respectively in Suaeda physophara and Halocnemum strobilaceum and less than 30000 ppm and 4000 ppm respectively in Phragmites cornmunis and Aeluropus littoralis; their interspecific coefficient of variation (c. v. ) are 95.10 % and 63.16% respectively. The interspecific c. v. of K content, 34.42 %, is the lowest. The contents of K, Na, Ca and S in all innerspecific plants at different sites are less various than interspecific ones; the content of Mg in some innerspecific plants is more various than in interspecific ones. The analysis of correlation between contents of elements in plants and soil shows that Nitraria sibirica is the only plant specie whose coefficient of correlation (c. c. ) of Na content in plant with that in soil reaches the significant negative level in seven plant species; among 5 elements in plants, the c. c. between Na and Ca reaches the significant negative corrrelative level, the c. c. between Na and S reaches the significant positive correlation level. The results of classification and ordination of TWINSPAN and DCA of 25 plant species using the data of 5 elemental contents show that seven plant species, for example, H. strobilaceum, S. physophora, Kalidium foliatum, K. caspicum, etc. are Na and S type plant; Phragmites communis, Achnatherum splendens, etc. are Na and K type plant.
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