Differences Between Fluctuations and Successions

Differences Between Fluctuations and Successions
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波动和连续之间的差异

DOI:
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发表时间:
1974
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影响因子:
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通讯作者:
T. Rabotnov
T. Rabotnov
中科院分区:
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文献类型:
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作者:
T. Rabotnov

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每年都有独特的气象、水文和其他条件,对植物生长很重要,因此,植物群落的变化每年都发生,或者从一个时期到另一个时期。植物群落的这种动态形式被称为波动。波动在草原中特别明显,许多植物生态学家研究了它们(Pachosky 1917,Ramensky 1925,Shennikov 1930,1941,Rabotnov 1955等)。与演替不同,波动的特征是:(a)植物群落每年或从一个时期到另一个时期的不同方向的变化,(B)变化的可逆性,(c)在典型情况下,植物区系组成的稳定性,没有新物种的入侵。
Every year is peculiar in meteorological, hydrological and other conditions, important for plant growth, and as a consequence of this the changes in phytocoenoses occur from year to year or from one period to another one. This form of dynamics of phytocoenoses is named fluctuation. Fluctuations are especially pronounced in grassland, where they were studied by many plant ecologists (Pachosky 1917, Ramensky 1925, Shennikov 1930, 1941, Rabotnov 1955 and others). Fluctuations, as differentiated from successions, are characterized by (a) differently orientated changes in phytocoenoses from year to year or from one period to another one, (b) reversibility of changes, (c) in typical cases stability of floristic composition, absence of invasion of new species.