Journal of East China Normal University(Natural Science) ›› 2022, Vol. 2022 ›› Issue (3): 17-26.doi: 10.3969/j.issn.1000-5641.2022.03.003

• Ecological and Environmental Sciences • Previous Articles     Next Articles

Influence of habitat fragments on the richness of remnant natural forest species

Hong LIANG1(), Liangjun DA2, Kun SONG2, Chunling ZHOU1, Zhiwen GAO2, Kai WANG1,3,*()   

  1. 1. School of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao Shandong 266109, China
    2. School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
    3. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
  • Received:2021-08-10 Accepted:2021-12-10 Online:2022-05-19 Published:2022-05-19
  • Contact: Kai WANG E-mail:hslh24@163.com;dlwangkai@163.com

Abstract:

Based on the classical theory of island biogeography, thirteen remnant forest patches of fragmented urban habitats were chosen as islands, and the Lao Mountain as the mainland. Then, canonical correspondence analysis (CCA) was used to analyze the relationship between species composition and four factors — namely, patch area, distance to species pool, human disturbance intensity, and isolation degree. The lengths of vectors in CCA biplots were used as weights for each influencing factor to calculate the overall sum, named the isolated island index (III); an isolated island index evaluation system of forest patches in fragmented urban habitats was subsequently designed. The results indicated that the relationship between III and richness was significantly negative for native species, but not significant for alien species richness. There was a significant relationship found for bird dispersal and wind dispersal species. The linear function was determined to be the best simulating model.

Key words: remnant natural forests, habitat fragment, species richness

CLC Number: