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In order to explore the natural smelly cypress (Sabina vulgaris) population growth condition, survival mechanism and the development of the law, this article Mu Us Sandy Land Natural Sabina vulgaris populations for study, Sabina vulgaris community in the update process, the gross Ukrainian prime sandy of Natural Sabina vulgaris community divided into four developmental stages that developmental stage Ⅰ, Ⅱ, Ⅲ, Ⅳ. WinDENDRO TM the rings image analysis system measuring smelly cypress disk age and ring width, Mu Us Sandland different developmental stages of the growth characteristics of Sabina vulgaris Populations, population specific life table, population age structure variation and community succession law research and analysis, the results show that: 1. Sabina vulgaris in 30a inner diameter to the annual increment of curve was unstable fluctuations, the coefficient of variation of 48.61%; 10a previously slow radial growth; 11 ~ 20a Sabina vulgaris radial growth of the fast-growing period; After With increasing age, the amount of annual radial growth downward trend. Mean ring width showed four developmental stages: the developmental stage II> developmental stages I> developmental stage III developmental stage IV. Exponential function relationships in the initial stage of growth, Sabina vulgaris Drive and age, the mature stage, between the ground diameter with age was significant linear correlation (P <0.01). 2. Sabina vulgaris stolon elongation process performance, the initial elongation slow growth, reaches a maximum around 20a Health After that, with increasing age, the amount of elongation growth rapidly declined and stabilized. By the model fitting showed that growth in line with the linear function, stolons in the Young, the maturity growth tends to be in the form of a power function, correlation coefficients were 0.74 and 0.85 at the 0.01 level. Sabina vulgaris plant the individual's age and shrub area was a significant linear relationship between the correlation coefficient of 0.82 (P <0.01). Sabina vulgaris populations two deaths peak of the first peak of 1 ~ 10a age class, a mortality rate of 94%, the second peak period from 51 ~ 60a age class, a mortality rate of 27% to 47 %. Sabina vulgaris populations disappearance rate and mortality trend is basically the same. Sabina vulgaris populations survival curves Deevey Ⅲ type, that the growth trend of the population is a growth in population. Sabina vulgaris populations age structure is divided into three types: developmental stages I the Ⅱ age structure diagram performance pyramid-type, an expansion of the population; developmental stage III age structure of the cone is stable populations; developmental stage IV the age structure of the performance of the inverted pyramid, is a declining population. The 5. Sabina vulgaris Community succession of three stages, from the beach to the top of a dune Sabina vulgaris Community in Mu Us Sandland early successional successional stabilization period and Succession recession.
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