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Scientia Silvae Sinicae ›› 2000, Vol. 36 ›› Issue (zk): 110-115.doi: 10.11707/j.1001-7488.2000S116

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STUDY ON PLANT DIVERSITY OF BETULA PLATYPHYLLA AND POPULUS DAVIDIANA FORESTS IN FOREST-STEPPE ECOTONE

Wang Qingsuo,Liu Tao,Feng Zongwei,Luo Juchun,Zhang Xihe   

  1. Institute of Animal Science,Chinese Academy of Agricultural Science Beijing 100094;Research Institute of Forestry,CAF Beijing 100091;Research Centre of Eco |Environment,Academia Sinica Beijing 100080;Forest Resources and Environment College, BFU Beijing 100083;Saihanba Mechanical Forestry Farm Hebei Province 068466
  • Received:1998-02-26 Revised:1900-01-01 Online:2001-01-25 Published:2001-01-25

Abstract:

Betula platyphylla and Populus davidiana forests of the forest-steppe ecotone in northern Hebei and eastern Inner Mongolia are abundant in plants,which are,at least,35 families,95 genera and 117 species.The plant species decrease and a diversity reduces from east to west in the ecotone because of gradually low precipitation.β diversity index reaches peak at the different limits such as those between the ecotone and the forest,and the steppe,and between the forest meadow and the meadow steppe zone in the ecotone.The plant diversity is closely related to climate,the community organization and succession.

Key words: Plant diversity, Betula platyphylla and Populus davidiana forests, Forest-steppe ecotone, China