Dynamics of Dominant Population and Its Influence on Karstification in Southwest Guangxi, China

详细信息   

• 责任者：Li Xiankun（Guangxi Institute of Botany ; Guangxi Zhuang Autonomous Region and the Chinese Academy of Sciences ; Guilin 541006 ; China） ; Jiang Zhongcheng
• 刊名：Acta Geoscientica Sinica
• 出版年：2008
• 卷期：29(2)
• 关键词：岩溶环境 ; karst environment ; 生态系统 ; ecological system ; 广西 ; Guangxi
• 页码：p.253-259
• 图表：2 illus., 4 tables， 21 refs.
• 分类号：1800
• issnNo：ISSN1006-3021
• isbnNo：CN11-3474/P

摘要

///In this paper, the authors studied the population dynamics of Excentrodendron hsienmu in the process of vegetation succession and its effects on karstification dynamics of the environment based on seven field plots in Nonggan National Park of Guangxi, aiming to understand the interaction between the succession development in this seasonal rain forest and the karst base, hence to find methods to protect this endangered species and seek ways to restore the vegetations in degradation areas nearby. The results show: 1) in the pioneer communities where big individual trees were absent but saplings and seedlings were abundant; 2) in climax communities where the number of individual plant appeared rationally within each size class with high proportion of seedling and sapling but less big trees; and 3) strong karstification was correlated to developed root systems of mature vegetation; the epikarst spring water properties reflected the vegetation effect on karstification in which concentrations of free CO₂, HCO^-3 are questionable.