Journal of Guangxi Normal University(Natural Science Edition) ›› 2020, Vol. 38 ›› Issue (5): 95-103.doi: 10.16088/j.issn.1001-6600.2020.05.012

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Relationship between Spatial Structure and Environment of Original Picea likiangensis var. linzhiensis Forest in Tibet

GAO Hui1,2,3,4,5,6, FANG Jiangping1,2,3,4,5*, LIU Lijuan6, LIU Xi6   

  1. 1. Research Institute of Tibet Plateau Ecology, Tibet Agricultural and Animal Husbandry University, Nyingchi Tibet 860000, China;
    2. Key Laboratory of Forest Ecology in Tibet, Ministry of Education, Nyingchi Tibet 860000, China;
    3. National Key Station of Field Scientific Observation and Experiment, Nyingchi Tibet 860000, China;
    4. Key Laboratory of Forest Ecology in Plateau Area, Tibet Autonomous Region, Nyingchi Tibet 860000, China;
    5. United Key Laboratories of Ecological Security, Tibet Autonomous Region, Nyingchi Tibet 860000, China;
    6. College of Environmental Science Engineering of China West Normal University, Nanchong Sichuan 637002, China
  • Received:2019-10-19 Online:2020-09-25 Published:2020-10-09

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Abstract: In order to further reveal the influence of the structure and function of typical primitive forest ecosystems in the Qinghai-Tibet Plateau, this article took the Tibetan native gymnosperm plant Picea likiangensis var. linzhiensis Cheng et L.K. Fu as the main subject of investigation. The field survey method was used to investigate the growth of trees, shrubs, and herbs in the spruce forest by setting up plots. The relationship between the spatial structure of the original P. likiangensis var. linzhiensis and the environment was analyzed and studied. The point pattern analysis shows that: in the small-scale range, P. likiangensis var. linzhiensis tends to be distributed in clusters; in the large-scale range, under the influence of environmental heterogeneity, P. likiangensis var. linzhiensis presents a random distribution. Among them, the small-diameter trees show as cluster distribution. Spatial structure research shows that the original P. likiangensis var. linzhiensis in Tibet has obvious layering phenomena such as tree layer, shrub layer, herb layer and moss layer. P. likiangensis var. linzhiensis is the absolutely dominant species in the community, with an individual number of more than 66%. The forest gap enhances the environmental heterogeneity of P. likiangensis var. linzhiensis. The spatial pattern of P. likiangensis var. linzhiensis is closely related to soil physical and chemical properties and topography. The soil physical and chemical properties in different regions also determine the distribution characteristics of the community spatial pattern.

Key words: Picea likiangensis var. linzhiensi, point pattern analysis, spatial structure, forest gap, environment

CLC Number: 

  • Q145.2
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