Effects of Nyssa yunnanensis Litter on Its Nature Regeneration
In order to explore the endangered mechanism of Nyssa yunnanensis and make effective protection, we used in-situ experiment in field and manipulated greenhouse experiments to examine the physical and allelopathic effects of litter on N.yunnanensis natural regeneration.The seed germination and seedling growth of N.yunnanensis were significantly inhibited by the litter in the field.Different thickness and different seed-sowing positions of litter had significant physical effects on seed germination and seedling growth.Allelochemicals in the litter also inhibited seed germination and seedling formation, which was evidenced by the fact of different concentrations of the litter extractions.Different concentrations of litter had significant negative allelopathic effects, and the inhibition degree of seed germination rate and seedling growth were aggravated with the increasing of the concentration.The inhibition of N.yunnanensis seedling growth may be due to the inhibition of AMF symbiosis ion in the N.yunnanensis root.Therefore, the litter in the forest has physical and chemical impacts on seed germination and seedling growth of N.yunnanensis, and the conservation strategies should be dedicated to ameliorating the effects of litter and enhancing natural regeneration through regularly cleaning up the natural forest litter.
NETL
NSTL
万方数据
维普
