tailieunhanh - Báo cáo lâm nghiệp: Forest reclamation of dumpsites of coal combustion by-products (ccb)

Tuyển tập những bài báo cáo nghiên cứu khoa học hay nhất được đăng trên tạp chí JOURNAL OF FOREST SCIENCE đề tài: Forest reclamation of dumpsites of coal combustion by-products (ccb). | JOURNAL OF FOREST SCIENCE 54 2008 6 273-280 Forest reclamation of dumpsites of coal combustion by-products CCB P. Cermak Research Institute for Soil and Water Conservation Prague Czech Republic ABSTRACT The present paper describes the reclamation of dumpsites of coal ash - coal combustion by-products CCB generated by the burning of brown coal in thermal power plants. It evaluates the soil properties of formed Anthroposols and growth vitality of the forest tree species Quercus robur L. Quercus rubra L. Pinus sylvestris L. Betula verrucosa Ehrh. Populus tremula L. Populus nigra L. Salix fragilis L. Salix alba L. Alnus glutinosa L. Gaertn. The best growth vitality at these sites was reached in tree species of seed origin from the vegetation series of primary succession. Deformations of the taproot taproot laterals in trees under 10 years of age were observed on Anthroposol from coal ash in Salix alba L. Salix fragilis L. Populus tremula L. Populus nigra L. and Populus alba L. and in the overlaying of the compacted stabilizate with a layer of reclaimable soil up to m in Pinus sylvestris L. Alnus glutinosa L. Gaertn. and Quercus rubra L. Keywords forest reclamation Anthroposol coal-ash dumpsite coal combustion by-products soil properties growth vitality root system The reclamation of coal ash before reforestation coming from the combustion of different types of coal in thermal power stations and deposited in settling pits by hydraulic sluicing was most frequently done in the Czech Republic before 1990 by the overlaying of its surface with suitable reclaimable soils topsoil pressmud 5-10 cm in thickness and by grassing down. Taxa Spiri k 1973 Maly Spirik 1975 usable on all types of coal ash coming from black and brown coal including lignite were considered as suitable tree species with higher ameliorative effects. This group most frequently comprised Alnus incana L. Moench. Alnus glutinosa L. Gaertn. Populus tremula L. Populus alba L. Tilia cordata Mill. Robinia .