Taking a reclaimed ecosystem in dump of Pingshuo opencast coal mine for 20 years as the research object

the implementation effects of ecological rehabilitation technologies were analyzed including soil reconstruction

screening pioneer species

vegetation succession and changes of animal

microorganism and soil nutrient.Results showed that the particular reclamation technologies-dump surface were covered directly by loess parental material

then ripened by fertilizing

were developed in Pingshuo mine.Many vegetation configuration modes were screened with Caragana korshinsk×Robinia pseudoacacia×Pinustabulaeformis

Robinia pseudoacacia×Pinus tabulaeformis and Robinia pseudoacacia×Hippophae rhamnoides etc.With the increasing of reclamation years

wild species invaded

soil seed bank gradually formed and species diversity has increased.Moreover

vegetation communities tended to stability and animal

microbial and soil nutrient presented the increasing trend.All these changes indicated that the ecological system have entered a normal succession process.But duo to the influence of special habitat and natural objective conditions

some problems such as diseases and pests

intraspecific and interspecific moisture competition etc

have resulted in vegetation degeneration.So ecological management of plants succession needed to be study in detail.