Chin J Plan Ecolo ›› 1996, Vol. 20 ›› Issue (4): 310-321.

Special Issue: Mangrove

• Research Articles • Previous Articles     Next Articles

Studies on the Mangrove Communities in Yineluo Bay of Guangxi

Ling Shi-chu   

  • Online:1996-04-10 Published:1996-04-10
  • Contact: Yun Rui

Abstract: This paper deals with the characters of the flora, type, physiognomy, structure, species diversity and succession of the mangrove communities in Yingluo Bay of Gauangxi. In this district ,the mangrove communities consist of 6 species belonging to 6 genera in 4 families. Using clustering analysis, twenty two plots of the mangrove communities were classified into eleven formations. The classification results are: (l) Form Bruguinera gymnorrhiza, (2)form Bruguieira gymnorrhiza+ Rhizophora stylosa, ( 3 ) Form Rhizophora stylosa , (4) form Rhizophora stylosa+ Kandelia candel, ( 5 )form Kandelia candel, ( 6 )Form Kandelia candel+ Aegicerad corniculatum, ( 7 ) Form Kandelia candel + Avicennia marina, (8)Form Aegiceras corniculatum , ( 9 )Form Avicennia marina, ( 10 ) Form Avecennia marina + Aegiceras corniculatum and ( 11 ) Form Excoecaria agallocha. The physiognomy of the mangrove communities was dominated by both the life form (Rannkiaer’s system,1967)with phanerophyte and the leave characters with mesophylls,coriaceous texture,single form and entire margin. The structure of the mangrove communities was rather simple, one layer or two layers. The constructive species and dominant species of the mangrove communities were evident. Compared with those of terrestrial plant communities, the species diversity indices of the mangrove communities were much low. Under the influence of soil texture, nutrition, environment salinity as well as the mangrove’s adaptability to the salt environment, various types of the mangrove communities form evident ecological series. Along with the relative reduction of sea level and physical and chemical amendment of the soils, the mangrove community succession was gradual and progressive, from simple pioneer stage to the ultimate or terrestrial stage. The succession change was brought about by the mangrove themselves an the habitat. At each succession stage, the mangrove species modified the environment to be less suitable for themselves but more suitable for others. Thus the species replacement was orderly and predictable, and permited directionality for succession. With the modification of the soils from sandy, silt to clay, the changes of the mangrove communities were sequential. On the basis of their development and zonation, the typical successive series of the mangrove communities in Yingluo Bay are as Fig. 2.

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