关键词: 臭柏, 种子产量, 种子更新, 沙地

Abstract:

Using the sample survey, this paper presents the results of a research on the fruit yeild, seeds hidden under ground, and number and distribution of seedlings. The results show that cones of Sabina vulgaris are mainly distributed within 3 metres around the centre of bush of S. vulgaris. There are usually 1506 seeds under the bush of S. vulgaris, but their fine seed rate are only 25.84 per cent. Although 3~9 seedlings per square metres distributed averagely under S. vulgaris bush at the moist interdune low lands and the foot of sand dune where ground water table is 40~60cm, water content in surface soil 16.7 %, and the depth of litter layer 1~3cm. These seedlings are usually 1~3-year-old and their natural regeneration is difficult. The seedlings of S. vulgaris always regenerate at moist bottomland where some plants such as Salix cheilophila bushes are growing, the bottomland has seasonal water, and the surface soil water content is about 30 %.The ages of these seedlings are different and their natural regeneration is easy. The seeds are spread mainly from the bush of S. vulgaris to the sand by the sand run-off. and then spread to other bushes by wind, run-off, birds, of animal.

Key words: Sabina vulgaris, Seed yeild, Seed regeneration, Sand