THE FRACTAL CHARACTER OF THE DISTRIBUTION PATTERN OF DEYEUXIA ANGUSTIFOLIA POPULATION I. Box Dimension. THE ABOVEGROUND BIOMASS DYNAMICS OF DEYEUXIA ANGUSTIFOLIA POPULATION IN TYPICALELL MEADOW ON SANJIANG PLAIN DYNAMICS OF HEIGHTS OF DEYEUXIA ANGUSTIFOLIA POPULATION THE FRACTAL CHARACTER OF THE DISTRIBUTION PATTERN OF DEYEUXIA ANGUSTIFOLIA POPULATION Ⅱ. Information Dimension and Correlation Dimension STUDY ON SEASONAL DYNAMICS OF ABOVEGROUND BIOMASS AND GROWTH RATE OF DEYEUXIA ANGUSTIFOLIA POPULATION IN MARSH MEADOW ON SANJIANG PLAIN STUDY ON THE BIOMASS OF ABOVEGROUND ORGANS AND LAYER STRUCTURE OF DEYEUXIA ANGUSTIFOLIA IN TYPICAL MEADOW ON SANJIANG PLAIN