Chin J Plan Ecolo ›› 2006, Vol. 30 ›› Issue (6): 931-940.doi: 10.17521/cjpe.2006.0118

• Research Articles • Previous Articles     Next Articles

POPULATION DYNAMICS DURING SUCCESSION OF SECONDARY NATURAL FOREST IN DAQINGSHAN, GUANGXI, CHINA

KANG Bing1,2; LIU Shi_Rong2*; WEN Yuan_Guang3; ZHANG Yue_Jin1; JIANG Zai_Min1; CHANG Jian_Guo2   

  1. 1 College of Life, Northwest Sci-Tech University of Agriculture and Forestry, Y angling, Shaanxi 712100, China; 2 Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China; 3 Forestry College, Guangxi University, Nanning 530001, China
  • Online:2006-11-30 Published:2006-11-30
  • Contact: LIU Shi_Rong

Abstract:

Background and Aims Secondary evergreen broad-leaf forest is abundant after large-scale destruction of virgin forests in subtropical areas. Restoration depends largely on natural processes, but these rarely have been studied in Daqingshan, Guangxi. We studied population dynamics of second-growth natural forest over 26 years of succession to explore: 1) patterns of variation in population characteristics and interspecific correlations, 2) the zonal climax vegetation type and 3) effective restoration of degraded secondary forest. 
Methods We used methods of population ecology to measure and analyze changes in intra-population structure and spatial distribution, in terms of the population type, importance value, niche breath and distribution pattern. The original investigation on this site took place in 1980 and provided the historic data used for our analysis. 
Key Results The heliophytes dominant in early succession changed from highly contagious to random distributions, and their niche breaths decreased accordingly. The mesophytes and shade-adapted tree species, however, had the reverse changes , from random to highly contagious, in concomitance with increasing niche breaths. The number of tree species increased from 32 to 65, of which 35 were late-successional, exhibiting rich species diversity. Niche overlap and interspecific association were analyzed to ascertain the mutual adaptation and evolution of species relationships. Values of niche overlap among the light-adapted populations of Castannopsis fleuryi, Aphanamixis grandifolia, etc. generally dropped, while values for mesophytic populations, such as Eurya nitida, Eberhardtia aurata, Schefflera octophylla, Knema guangxiensis, etc., increased slightly. Values for mesophytes partial to the shaded habitats were enhanced greatly and these species have become dominants, e.g., Beilschmiedia percoriacea, Adinandra millettii, Actinodaphne pilosa, etc. Results of interspecific association analysis were consistent with those of niche overlap analysis, i.e., the species pairs with closely positive associations had large niche overlap, indicating that these species tended to utilize environmental resources similarly. 
Conclusions This study shows obvious species changes during the natural restoration process, especially in the quantities and distributions of many dominant species. Results indicate that current communities are increasing in ecological stability as the secondary communities approach the zonal climax through natural succession over 26 years.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] Liu Chu-tsin;Zhou Wen-hua;Gao Feng and Huang Shu-mei. A study on the sweet principle from the leaves of Rubus suavissimus S. Lee[J]. Chin Bull Bot, 1983, 1(01): 33 -37 .
[2] Ting Gao Jintun Zhang. Individual and Modular Biomass of Lespedeza bicolor Turcz. Populations in Western Mountain Areas of Beijing[J]. Chin Bull Bot, 2007, 24(05): 581 -589 .
[3] Zhou Shi-gong. Applications of Lanthanum in Botanical Research[J]. Chin Bull Bot, 1992, 9(02): 26 -29 .
[4] Juan Gao, Ying Zeng, Shan Lu. Research Progress in Aromatic Prenyltransferases[J]. Chin Bull Bot, 2010, 45(06): 751 -759 .
[5] Hou Song-sheng Chen Shi-yun. Recent Advances in the Production of Secondary Metabolites by Plant Cell Cultures[J]. Chin Bull Bot, 1991, 8(03): 30 -33 .
[6] . [J]. Chin Bull Bot, 1996, 13(专辑): 105 .
[7] Shi He-ping. Selenium and Its Physiological Roles in Plants[J]. Chin Bull Bot, 1995, 12(增刊): 31 -36 .
[8] Wang Ya-fu;Xu Qing;Lu Wei;Wang Lun-shan;Li Zhi xiao and Zhang Li. The Changes of ODAP and Some Macromolecules Content During the Development of Lathyrus Sativus Seed[J]. Chin Bull Bot, 1990, 7(03): 37 -41 .
[9] SHOU Sen-Yan WANG Qiao-Mei. Progress of Study on Sex Differentiation in Higher Plants[J]. Chin Bull Bot, 2000, 17(06): 528 -535 .
[10] Ma Ke-ping. Studies on the Structure and Function of Calamagrostis angustifolia Grassland Dominant Species Calamagrostis angustifolia[J]. Chin Bull Bot, 1995, 12(专辑2): 9 -48 .