In China, coal mine spoils have traditionally been dumped in cone-shaped heaps that have the potential to pollute air, soil and water environments. The coal waste pile occupies lots of arable land and endangers the ec...In China, coal mine spoils have traditionally been dumped in cone-shaped heaps that have the potential to pollute air, soil and water environments. The coal waste pile occupies lots of arable land and endangers the ecological system in the coal mine district. Vegetation restoration is an efficient approach for controlling the environment pollution of coal waste pile, and is also a topic of current interest in restoration ecology and degradation system ecology. This study focused on the distribu- tion pattern and limiting factors of vegetation in coal waste pile of Xinzhuangzi Coal Mine in Huainan. The results show that two stable plant communities (Synodon dactylon+Erigeron bonariensis.L+Setaria viridis community and Humulus scan- den+Erigeron bonariensis. L community) exist at the bottom of the pile. Synodon dactylon and Erigeron bonariensis. L have much higher values of summed dominance ratio, which denote that these two species can be used for restoration of coal waste piles. The high levels of pH (8.77) and salinity, low levels of total P and total K in coal mine spoil can be the limiting factors for the residence and growth of vegetation.展开更多
Mining activities produced a lot of abandoned mine land. This paper introduced the theoretical and technical progress of ecological restoration of surface coal mines, mining subsidence land and coal waste piles in Chi...Mining activities produced a lot of abandoned mine land. This paper introduced the theoretical and technical progress of ecological restoration of surface coal mines, mining subsidence land and coal waste piles in China and discussed some key problems for research in the future. Ecological restoration of abandoned mine land was related to many disciplines, and multi-disciplinary theories might make great contributes to it. Some practical techniques of ecological restoration of abandoned mine land and their demonstration bases in China were introduced. Ecosystem succession process and mechanism, structure optimization of land use and new technologies of ecological restoration of abandoned mine land should be focused on in research activities.展开更多
文摘In China, coal mine spoils have traditionally been dumped in cone-shaped heaps that have the potential to pollute air, soil and water environments. The coal waste pile occupies lots of arable land and endangers the ecological system in the coal mine district. Vegetation restoration is an efficient approach for controlling the environment pollution of coal waste pile, and is also a topic of current interest in restoration ecology and degradation system ecology. This study focused on the distribu- tion pattern and limiting factors of vegetation in coal waste pile of Xinzhuangzi Coal Mine in Huainan. The results show that two stable plant communities (Synodon dactylon+Erigeron bonariensis.L+Setaria viridis community and Humulus scan- den+Erigeron bonariensis. L community) exist at the bottom of the pile. Synodon dactylon and Erigeron bonariensis. L have much higher values of summed dominance ratio, which denote that these two species can be used for restoration of coal waste piles. The high levels of pH (8.77) and salinity, low levels of total P and total K in coal mine spoil can be the limiting factors for the residence and growth of vegetation.
基金National Twelve Five-year Plan Science and Technology Program (2012BAC04B03).
文摘Mining activities produced a lot of abandoned mine land. This paper introduced the theoretical and technical progress of ecological restoration of surface coal mines, mining subsidence land and coal waste piles in China and discussed some key problems for research in the future. Ecological restoration of abandoned mine land was related to many disciplines, and multi-disciplinary theories might make great contributes to it. Some practical techniques of ecological restoration of abandoned mine land and their demonstration bases in China were introduced. Ecosystem succession process and mechanism, structure optimization of land use and new technologies of ecological restoration of abandoned mine land should be focused on in research activities.