Key Laboratory of Genetic Resources of Forest and Forest Protection of Hebei Province

Hebei, China

Key Laboratory of Genetic Resources of Forest and Forest Protection of Hebei Province

Hebei, China
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Chen Q.,Agricultural University of Hebei | Chen Q.,Key Laboratory of Genetic Resources of Forest and Forest Protection of Hebei Province | Yang Y.,Agricultural University of Hebei | Yang Y.,Key Laboratory of Genetic Resources of Forest and Forest Protection of Hebei Province | And 4 more authors.
Chinese Journal of Applied Ecology | Year: 2017

To explicate the structure and dynamics of dominant tree populations of the natural secondary 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-II type, while that of Q. mongolica population and B. platyphylla population belonged to Deevey-III type and Deevey-II 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 vanishing rate of A. mono, Q. mongolica and T. mandshurica populations appeared in IV, I and I diameter 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 had no obvious change. The time series prediction showed that the number of small-sized (I-II) individuals of B. platyphylla decreased gradually and tended to decline, while the populations of A. mono, Q. mongolica and T. mandshurica were fairly stable. We suspected that A. mono, Q. mongolica and T. mandshurica would finally dominate within this natural secondary forest. © 2017, Science Press. All right reserved.


Tian C.,Agricultural University of Hebei | Tian C.,Key Laboratory of Genetic Resources of Forest and Forest Protection of Hebei Province | Yang X.-B.,Agricultural University of Hebei | Yang X.-B.,Key Laboratory of Genetic Resources of Forest and Forest Protection of Hebei Province | And 2 more authors.
Chinese Journal of Applied Ecology | Year: 2011

Edge effect is an important concept in ecology and biological conservation, playing an important role in the study of ecological processes such as energy and material flow at ecosystem scale and landscape scale. This paper expatiated the connotation, features, quantitative evaluation (basis of quantitative analysis, strength, impact zone, and models, etc.), and applied aspects of edge effect, summarized the impacts of edge effect on forest ecosystem, analyzed the deficiencies in the study of edge effect, and prospected related research directions, aimed to provide references for forest and protected area management.

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