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Journal of Arid Land  2011, Vol. 3 Issue (4): 231-321    DOI:
Study of the Species Diversity of Plant Communities in the Northern Slopes of Karlik Range—Naomaohu
ZHANG Hai-yan 1, 2, QIAN Yi-bing 1, DUAN Shi-min 1,WANG Zhong-chen 1, 2,HUANG Cai-xia 3
(1. Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, CAS, Urumqi 830011, China; 2. Graduate School, Chinese Academy of Sciences, Beijing 100039, China; 3. Development and Reform Bureau, Yiwu County Xinjiang 839300, China)
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Abstract  Based on data from 22 sample sites, species diversity of plant communities in the northern slope of Karlike Range—Naomaohu were discussed. The Karlike Range is situated in the eastern section of the Tianshan Mountains, and Naomaohu is located between the Altai Mountains and Tianshan Mountains. The research on the botany has not been found in this region yet. Applying the analytical method of species diversity indices, the composition, species, and diversity of the vegetation in the study area are discussed this paper. The results show that the higher plants in this area have 33 families, 93 genera and 133 species, which are dominated by Compositae, Gramineae, Chenopodiaceae, Leguminosae, Ranunculaceae, Cyperaceae and so on. The composition of plant life-forms is mainly herbaceous. Principal component analysis of indices shows that, in terms of diversity indices, the species richness index (R), Pielou evenness index (Jsi), Shannon-Wiener diversity index (H) and Simpson dominance index (C) can better describe the characteristics of the plant communities in the study area. The vegetation types are varied in study area, but the vegetation vertical zonal spectrum is incomplete and there is no mountain meadow. Compared with other mountains on the northern slopes of the Tianshan Mountains, the distributing boundary of the grasslands in Karlik Range is high. Analyzing the species diversity indices of different plant communities indicates that the diversity index, species richness index and evenness index display a common trend, while the dominance index is on the contrary. The fluctuation of the evenness index is very slight, indicates that the distribution of species in different plant communities is quite uniform. The four types of species diversity indices can well reflect the differences between species composition and community organization of different plant communities. With the rising of elevations, the species diversity, evenness and richness increase gradually at first and then reduce. The plant species diversities are lower in the desert ecosystem and higher in the high mountain ecosystem and reach the maximum at the intermediate zone. This is due to the allocation of heat, temperature, precipitation and other environmental factors favorable in the intermediate zone.

Key wordsecosystem      self-organization      non-equilibrium thermodynamics      functional diversity      phenotypic diversity     
Published: 25 April 2011
Cite this article:

ZHANG Hai-Yan, QIAN Yi-Bing, DUAN Shi-Min, WANG Zhong-Chen, HUANG Cai-Xia. Study of the Species Diversity of Plant Communities in the Northern Slopes of Karlik Range—Naomaohu. Journal of Arid Land, 2011, 3(4): 231-321.

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