A Study On Adaptability Of Drepanostachyum Luodianense (Yi Et R.S. Wang) Keng F Clonal Populations To Different Karst Conditions

This dissertation studied the clonal plant ecology of Drepanostachywn luodianense (Yi et R. S. Wang) Keng f. to provide a theoretical basis and information. The main results were as follows:1. Both spacer length and intensity of branching's of Drepanostachywn luodianense (Yi et R. S. Wang) Keng f. within different habits are obviously difference. They have obviously relationship with water. The rhizome branch angle has no notable difference in different habits. It has relationship to number of branch. Entire subterranean stem system assumes a sector extending scattering.2. Both spacer length and intensity of branching's has obviously difference in natural and man-made forests. Spacer are longer and intensity of branching's are smaller in man-made forests with its strong competition. The rhizome branch angle has no notable difference in two habits.3. The aboveground modular biomass is obviously difference both in different habits and different age-class. The modular biomass in superiority habits is higher than in bad habits. The distribution of modular biomass in each age-class is descend follow age-class add. The underground modular biomass is obviously difference both in different habits and in different age-class too.4. Each age-class and each modular caloric value in prophase, phases and anaphase of bamboo shoot are surveyed. The biomass allocations is culm > branch > leaf > rhizome > root The modular's biomass are difference in different age-class and different period. Standing crop of energy of each age-class modular put up different change across bamboo shoot.5. It was explored the spatial distributions by seven measurement. It shows that the congregate tends to gradually increase as the sampled area increases without reference to population or clonal population. The distribution pattern of quadrennial is distinct clump. Then the congregate tends to gradually decrease as the age-class adds.