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Chinese Journal of Applied Ecology ›› 2011, Vol. 22 ›› Issue (01): 9-13.

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Distribution patterns of Picea schrenkiana var. tianschanica population in Tianshan Mountains.

LIU Gui-feng1,2, DING Yi2, ZANG Run-guo2, GUO Zhong-jun3, ZHANG Xin-ping3, CHENG Ke-wu4, BAI Zhi-qiang3, AYOUFU Bahaerguli3   

  1. 1College of Agronomy, Inner Mongolia University for the Nationalities, Tongliao |028000, Inner Mongolia, China; 2State Forestry Administration Key
    Laboratory of Forest Ecology and Environment, Institute of Forest Ecology Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China;3Institute of Forest Ecology, Xinjiang Forestry Academy, Urumqi 830000, China;4College of Landscape Architecture and Tourism, Agricultural University of Hebei, Baoding 071000, Hebei, China
  • Online:2011-01-18 Published:2011-01-18

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Abstract: A vertical transect investigation on Picea schrenkiana var. tianschanica forests was conducted at five different longitudinal sites (Zhaosu, Gongliu, Wusu, Urumqi, and Hami) in Tianshan Mountains, and the distribution pattern of P. schrenkiana var. tianschanica population at each site was analyzed based on theoretical distribution model and aggregation intensity index. On the whole, the P. schrenkiana var. tianschanica population in Tianshan Mountains presented a clumped distribution, and the distribution pattern and clustering intensity were affected by the developmental stages of stem and the ranges of altitude to some degree. The clustering intensity increased with the increasing size (DBH) or developmental stage of stem, and had the highest values at high altitudes.

Key words: Picea schrenkiana var. tianschanica, population, distribution pattern, altitudinal gradient, slope aspect, tree ring, Picea purpurea, Abies faxoniana, rapid warming, Tibetan Plateau.