Photosynthetic Diurnal Changes of Dominant Species in Different Alpine Plant Communities and Their Relationships with Environmental Factors

doi:10.7522/j.issn.1000-694X.2018.00071

Journal of Desert Research ›› 2019, Vol. 39 ›› Issue (4): 46-53.DOI: 10.7522/j.issn.1000-694X.2018.00071

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Photosynthetic Diurnal Changes of Dominant Species in Different Alpine Plant Communities and Their Relationships with Environmental Factors

Shi Rui^1,2, Su Peixi¹, Zhou Zijuan¹, Ding Xinjing^1,2

1. Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2018-03-30 Revised:2018-07-02 Online:2019-07-20 Published:2019-07-12

Abstract

Abstract: In order to analyze the photosynthetic characteristics of dominant species in different alpine plant communities and explore the main environmental factors which affect the photosynthesis, three communities, swamp, wet meadow and dry meadow, were selected at the same latitude and altitude in the Zoige Plateau, and photosynthetic diurnal changes of their dominant species, Carex muliensis, Kobresia setchwanensis and Elymus nutans were compared. The results showed that:were the main environmental affecting factors of P_n. The P_n of dominant species in dry meadow was mainly affected by T_a and PAR. The leading factor which affect P_n in wet meadow was PAR.

Key words: Zoige Plateau, net photosynthetic rate, environment factor, path analysis

CLC Number:

Q945.79

Shi Rui, Su Peixi, Zhou Zijuan, Ding Xinjing. Photosynthetic Diurnal Changes of Dominant Species in Different Alpine Plant Communities and Their Relationships with Environmental Factors[J]. Journal of Desert Research, 2019, 39(4): 46-53.

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Photosynthetic Diurnal Changes of Dominant Species in Different Alpine Plant Communities and Their Relationships with Environmental Factors

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