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FOREST RESOURCES WANAGEMENT ›› 2018›› Issue (2): 138-145.doi: 10.13466/j.cnki.lyzygl.2018.02.022

• Research Bulletin • Previous Articles     Next Articles

Study on Spatial Structure of Quercus mongolica Forest in Sanhu National Nature Reserve

CHENG Fushan1(), HE Huaijiang2,3, LIU Qiang1, MU Huaizhi1, WANG Gerong1, LIN Lin1, ZHAO Peng4, XIA Fucai1()   

  1. 1. College of Forestry,Beihua University,Jilin 132013,China
    2. Jilin Provincial Academy of Forestry Sciences,Changchun 133033,China
    3. College of Forestry,Beijing Forestry University,Beijing 100083,China
    4. Baihe Forestry Bureau of Jilin Province,Changbai Mountain Protection and Development Zone 133613,China
  • Received:2018-03-15 Revised:2018-04-25 Online:2018-04-28 Published:2020-09-22
  • Contact: XIA Fucai E-mail:120019304@qq.com;xfc0707@163.com

Abstract:

Quercus mongolica was one of the main tree species in the secondary forests of Northeast China.There were a large number of Q.mongolica forests distributed in the northeastern forest area.The spatial structure of its stand played an important role in the sustainable utilization of the Q.mongolica forest resources in Northeast China.In this study,the typical Q.mongolica forests in the Sanhu National Nature Reserve in Jilin Province were taken as the research object,and field surveys and positioning experiments were conducted.The spatial structure of the forest was analyzed by using the three spatial structure parameters with mingling degree,uniform angle index and neighborhood comparison.The results showed that Q.mongolica,as the main tree species in the study area,presented an abundance of more than 62%,making the Q.mongolica forest in the Songhua Lake area close to pure forest.The overall diameter distribution of the forest stands took on a bimodal mountain-shaped curve,with a large number of young individuals and a good regeneration.The stand mingling degree was low (the mean value was 0.43),which is lightly mixed,and the stability of the stand was poor.The results of uniform angle index and neighborhood comparison showed that the Q.mongolica forest in this area was a forest community with a spatial structure that was randomly distributed and the spatial differentiation of tree species was relatively small.Based on the above findings,in order to maintain the health and stability of the Q.mongolica ecosystem in Sanhu National Nature Reserve,it was necessary to cooperate with a certain degree of management to increase mingling degree.The coniferous species were properly introduced and the coniferous and broad-leaved mixed forest ecosystem was established according to the natural growth process and succession of the community.

Key words: Quercus mongolica forest, mingling degree, uniform angle index, neighborhood comparison, distribution pattern, Sanhu National Nature Reserve

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