JOURNAL OF NATURAL RESOURCES ›› 2019, Vol. 34 ›› Issue (11): 2415-2426.doi: 10.31497/zrzyxb.20191113

• Resource Ecology • Previous Articles     Next Articles

Effects of biodiversity, dominant species and soil factors on community productivity in Lishan Mountain meadow, Shanxi province

ZHAO Feng-xia1, ZHANG Rui1, XU Ming2,3, ZHENG Yun-pu4   

  1. 1. College of Geographical Sciences, Shanxi Normal University, Linfen 041004, Shanxi, China;
    2. Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China;
    4. School of Water Conservancy and Hydropower, Hebei University of Engineering, Handan 056038, Hebei, China
  • Received:2019-04-12 Revised:2019-07-31 Online:2019-11-28 Published:2019-11-28

Abstract: The productivity of natural ecosystem is closely related to many factors, such as biodiversity, functional traits of dominant species and soil property, thus is controlled by multi-variable process. In this paper, the effects of species diversity, functional diversity, functional traits of dominant species and soil factors on community productivity of Lishan Mountain meadow in Shanxi province were studied by using structural equation model. The results showed that species diversity had no effect on productivity (γ=0.10, P=0.69), but the functional traits of dominant species (γ=0.61, P=0.00), functional diversity (γ=0.47, P=0.04) and soil factors (γ=0.34, P=0.02) had a direct impact on productivity, and soil factors had an indirect effect on productivity by the functional traits of the dominant species and functional diversity, with the indirect effect coefficients being 0.35 and 0.27, respectively. The functional traits of dominant species were the best predictors of productivity, followed by functional diversity and soil factors. Therefore, understanding the change of natural ecosystem productivity should be based on the introduction of multiple methods, with emphasis on the functional traits of dominant species.

Key words: biodiversity, functional diversity, functional traits of dominant species, soil factors, structural equation model