The Seed Bank of the Forest Community at the Pinnacles of Maolan Karst Hilly Area in Guizhou

At the pinnacles of Maolan Karst hilly area,there are 36 spermatophyte species in the 900 m2 sample plot among which 21 have being reproductived and produce ripe seeds by 520.9 seeds per square meter annually.The seed rain of the community is 910.3 seeds per square meter.The number of the germinative seeds in the seed rain which enable the community to regenerate is 314.7 seeds per square meter.The regenerative potential of the community is good because there are lots of germinative seeds of many existed plants in the seed bank at the beginning of the germination of the seed bank.In the natural environment,the germinative seeds in the seed bank germinate from the first ten days of Jan.to the second ten days of May.In the germination season,18 kinds of the germinative seeds in the 900 m2 sample plot germinate to form seedling with the number 7 245.And the number of the survival seedling is 2 970.The community regenerate well.The gymnospermae, Pinus kwangtungensis,Pseudotsuga brevifolia and Calocedrus macrolepis, adapt themselves well to the pinnacles of Maolan Karst hilly area,and will exist for long time.