摘要
通过实地观测,对煤矸石山人工植物群落的生长规律、生产力水平和土壤理化特性的影响及其制约因素进行了研究.结果表明:矸石山植被经过9a的自然演替和生长过程,其种类及数量发生了较大变化,已形成了由15个乔木树种、12个灌木树种和18种草本组成的人工植物群落,混交林中木本植物(乔、灌木)种群密度达到11220株/hm^2,植被具有明显减小矸石山渗透速率、提高保水和持水能力的作用,刺槐林分还能防止矸石山酸化和增加矸石山全氮量并促进氮素的有效化。
The growth, population density, stand productivity, soil ecological effects of vegetation and their limiting factors were studied in coal waste piles after 9 years' growth. The results show that the plants species consists of 15 kinds of trees, 12 kinds of shrubs and 18 kinds of grasses and population density of woody plants (trees and shrubs) in mixed forest is about 11220 trees/hm2. Since successful re-vegetation of the pile, properties of the 'soil' in the pile such as infiltration and water-holding capacity have been improved, i. e. , slowing down infiltration rate and increasing water-holding capacity. Successful vegetation could also prevent acidification of coal waste piles and increase the quantity of total N and plant-available N.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2003年第5期491-495,499,共6页
Journal of China University of Mining & Technology
基金
国家自然科学基金(40071045
49701010)
中国博士后科学基金(2002-11-31)
关键词
煤矸石山
植物种群
土壤理化特性
植被恢复
矿区土地复垦
coal waste piles
vegetation reclamation
stand productivity
soil physical and chemical property
