Biodiv Sci ›› 2020, Vol. 28 ›› Issue (8): 1008-1017.DOI: 10.17520/biods.2020015

• Original Papers • Previous Articles     Next Articles

Spatial distribution pattern and interspecific correlation analysis of main species of Rosaceae in a deciduous broad-leaved forest in Yaoluoping

Dongdong Liang1, Jie Peng1, Gaili Gao3, Xin Hong3,*(), Shoubiao Zhou2,*(), Jun Chu4, Zhi Wang5   

  1. 1. School of Geography and Tourism, Anhui Normal University, Wuhu, Anhui 241000
    2. School of Ecology and Environmental, Anhui Normal University, Wuhu, Anhui 241000
    3. School of Resources and Environmental Engineering, Anhui University, Hefei 230601
    4. Yaoluoping National Nature Reserve Administration Committee, Anqing, Anhui 246133
    5. Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042
  • Received:2020-01-09 Accepted:2020-02-28 Online:2020-08-20 Published:2020-09-01
  • Contact: Xin Hong,Shoubiao Zhou

Abstract:

In order to discuss community construction and succession mechanism in Dabie Mountains, three main species of the Rosaceae in the Yaoluoping National Nature Reserve were taken as the object of study by using nearest-neighbor analysis and different zero models. An 11.56 ha forest dynamic plot was established in the Yaoluoping National Nature Reserve according to CTFS technical standards. Sorbus alnifolia, Cerasus serrulata and Photinia chinensis were the three most abundant tree species. The three species were divided into three age groups: small tree, adult tree and old tree according to DBH frequency distributions. Based on nearest neighbor analysis, O-ring functions, Monte Carlo fitting and zero model selection, spatial distribution patterns and interspecific correlations of the three main species were analyzed and compared. This study found three major conclusions: (1) The three species were aggregated across all age stages, although aggregation weakened with increasing age. (2) In the DBH range of 0-50 m, trees of the three species were clustered on small scales (≤ 10 m), while adults and older trees were mostly randomly distributed. Additionally, habitat heterogeneity decreased tree aggregation and tree species aggregate on smaller scales (≤ 4 m). (3) Most of the three species were negatively correlated or not significantly correlated with other age groups. Competitive and density-dependent effects seemed to impact species negatively on a small scale as well (≤ 10 m), though correlation decreased with scale. In conclusion, Rosaceae plants in the deciduous broad-leaved forests of Dabie Mountains are mostly aggregately distributed depending on tree age, though habitat heterogeneity impacts aggregation.

Key words: Yaoluoping National Nature Reserve, broadleaved deciduous forest, Rosaceae, nearest neighbour analysis, O-ring function, spatial distribution pattern