Dominant species population structure and dynamics of natural secondary forest in Mulan-weichang, China

Ying yong sheng tai xue bao = The journal of applied ecology
Qian ChenXue Hua Xu

Abstract

To explicate the structure and dynamics of dominant tree populations of the natural se-condary forest in Mulanweichang, the canopy stratum composition, diameter class structure, static life table, survival curve, mortality curve, survival function and the time series prediction were studied. The results showed that there were 9 populations in canopy stratum, with Acer mono, Quercus mongolica, Tilia mandshurica and Betula platyphylla as the dominant populations. The survival curve of A. mono and T. mandshurica populations approximately belonged to Deevey-2 type, while that of Q. mongolica population and B. platyphylla population belonged to Deevey-3 type and Deevey-2 type, respectively. With the increase of diameter class, the mortality rate curves and the vanishing rate curves of all tree populations changed similarly. The maximum mortality rate and va-nishing rate of A. mono, Q. mongolica and T. mandshurica populations appeared in 4,1and1diameter class, respectively. B. platyphylla changed little over all diameter classes. The 4 survival functions showed that A. mono, Q. mongolica and T. mandshurica populations declined at early stage, but became relatively stable at intermediate and late stages. The B. platyphylla population ...Continue Reading

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