Effects Of Habitat Disturbance And Seeds Cold-wet-stratification On The Seedling Emergence And Establishment Of Plants From Subalpine Meadow

The research, which aimed at plant communities of different stages,that is abandoned field succession and Alpine meadow were used to analyze the germination characteristics and seedling emergence, for a purpose of providing insights into the rules of individual establishment in various microsites. The results as shown follows:1. Single factor or combination of factors had effects on germination of most species. Study is essential to understand the germination behavior and dormancy mechanism of plant species under specific conditions.2. Our field results showed that cold stratification and disturbance treatment affected the seedling emergence. As a consequence, we indicated that successful establishment of plant species is mainly affected both by available seeds and safe sites.3. Different disturbances created specific microsites and provided the seeds with ecological factors what they require during germination, seedling emergence. Different disturbances affected seedling ratio of most species. And most species have higher seedling emergence in suitable disturbance rather than in severe disturbance.4. Seeds Cold-wet-stratification also have the significant effects on the rate of most specie's seedlings emergence and establishment. In subalpine Kobresia humilis meadow Cold-stratification inhibited the seedling emergence of most speices. But in abandoned land more speices have higher seedling emergence by Cold-stratification.