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 Jun;ZHAO Lan-Yong;FENG Zhen;ZHANG Mei-Rong;WU Yin-Feng. Optimization Selection of Genetic Transformation Regeneration System from Leaves of Dendranthema morifolium[J]. Chin Bull Bot, 2004, 21(05): 556 -558 .
[2] Luo Jian-ping and Ja Jing-fen. Structure and Function of Plant Oligosaceaharins[J]. Chin Bull Bot, 1996, 13(04): 28 -33 .
[3] YANG Qi-He SONG Song-Quan YE Wan-HuiYIN Shou-HuaT. Mechanism of Seed Photosensitivity and FactorsInfluencing Seed Photosensitivity[J]. Chin Bull Bot, 2003, 20(02): 238 -247 .
[4] CUI Yue-Hua;WANG Mao and SUN Ke-Lian. Morphological Study of Gutta-containing Cells in Eucommia ulmoides Oliv.[J]. Chin Bull Bot, 1999, 16(04): 439 -443 .
[5] . Advances in Research into Low-Phytic-Acid Mutants in Crops[J]. Chin Bull Bot, 2005, 22(04): 463 -470 .
[6] Cong Ma, Weiwen Kong. Research Progress in Plant Metacaspase[J]. Chin Bull Bot, 2012, 47(5): 543 -549 .
[7] Chang’en Tian, Yuping Zhou. Research Progress in Plant IQ Motif-containing Calmodulin-binding Proteins[J]. Chin Bull Bot, 2013, 48(4): 447 -460 .
[8] Huawei Xu, Dianyun Hou. Research Advances in Protein Transport into Chloroplasts in Plant Cell#br#[J]. Chin Bull Bot, 2018, 53(2): 264 -275 .
[9] Li Jiandong, Zheng Huiying. ?ber die Anwendung der Braun-Blanquet's Methode in der Steppen-Untersuchung[J]. Chin J Plan Ecolo, 1983, 7(3): 186 -203 .
[10] Cheng Changdu. Proposals on Some Problems to Develop the Agriculture, Forestry, Animal Husbandry and Fishery as well as Sideline Culture from the View-point of Ecological Balance[J]. Chin J Plan Ecolo, 1981, 5(1): 65 -71 .