Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2020, Vol. 41 ›› Issue (5): 1048-1056.DOI: 10.3969/j.issn.1000-2561.2020.05.027

• Ecology • Previous Articles     Next Articles

Characteristics and Succession Trend of Soil Seed Bank in the Next Forest Community Treated with Different Cutting Vines

TONG Siyuan1,2,CHEN Guode2,ZHONG Shengyun2,FU Rong2,FU Shengbo2,LIN Chengbo1,2,YU Xuebiao1,*()   

  1. 1. College of Forestry / Wuzhishan National Long Term Forest Ecosystem Monitoring Research Station, Hainan University, Haikou, Hainan 570228, China
    2. Hainan Academy of Forestry, Haikou, Hainan 571100, China
  • Received:2019-08-02 Revised:2019-09-27 Online:2020-05-25 Published:2020-06-15
  • Contact: YU Xuebiao

Abstract:

In this paper, the low-altitude secondary forest community with serious damage to vines in Wuzhishan City were used as the research object. The combination of field vegetation survey and indoor seed germination test was used to analyze the soil seed bank characteristics and species diversity of secondary forest communities under different vines. Its similarity with the understory vegetation was studied. Artificial vine removal could increase the seed germination quantity and speed of the soil seed bank in the study area, and also prolong the seed germination days. A total of 74 plants were found in the soil seed bank under different vines treatments, belonging to 67 genera in 35 families, among which the proportions of Asteraceae, Rubiaceae and Gramineae were higher, while the Eupatorium odoratum were dominant species in the soil seed bank under different vines treatment. The composition of life type was dominated by herbaceous plants. Artificial vine removal could increase the number of species of trees and shrubs in the soil seed bank. The seed density and species number of soil seed bank under different vines with the deepening of the depth of the soil layer, the seed density in the soil of 2-5 and 5-10 cm soils in the study area increased significantly. There was no significant difference in the species diversity index of soil seed bank under different vines treatments, and the similarity coefficient (0.173-0.302) between soil seed bank and understory vegetation was generally lower. However, with the extension of the age of cutting vines, the similarity of soil seed bank and understory vegetation species composition increased, and the community treated by vine for 3 years was significantly larger than the untreated community. In summary, artificial vine removal can improve the recovery potential of vegetation and improve the natural regeneration ability of the soil seed bank in the study area, and help to promote the positive recovery succession of the secondary forest community in the area.

Key words: artificial vine removal, secondary forest community, characteristics of soil seed ban, restoration succession

CLC Number: