Study on the artificial revegetation succession law of the deserted quarry of the north of China

摘要

For many years,large amounts of Huangyuan village quarry loose deposits by disordered quarrying caused serious threat to the regional ecological environment security,and also the extremely hard things of vegetation restoration and reconstruction.In this paper,the authors took the north of China—Beijing Huangyuan deserted quarry as an example,surveyed the revegetation conditions including the communities and characters and the life form composition; dividing the vegetation communities into different site types by the order of the ummed dominance ratio methods; analyzing the diversities and succession characters of the vegetation communities under three factors.It would have the extreme important scientific value to realize the revegetation restoration and ecological environment improvement.The main findings are as follows: 1) there were 25 families,43 genera and 58 species in the area,and the plant species were mainly Asteraceae,Chenopodiaceae,Convolvulaceae and Grassy.The herbaceous was dominant,which accounts for more than 70％,and the trees represents 10-15％,only the shrubs and vines were scarce.However,there was a gradual trend towards grass-shrub and tree-shrub layer succession; 2) The authors also summarized three major types for the appropriate vegetation succession in the deserted quarry; 3) The plant communities diversity variation was: the cover and the index value of diversities was highest of the compaction area higher than the platform area and slope areas.