In China

forest coverage has been enhanced by a big margin and ecological environment has been obviously improved.Thus the vegetation restoration in sites the most difficult to be afforested in a coal pile wasteland becomes the main tasks for foresters.In order to screen out the species and reclamation measures adaptive to coal pile wasteland

The survival rate of different plants

the effects of vegetation and different reclamation measures on soil chemical properties

the effects of different reclamation measures on DBH and tree height net growth of per year were studied in Fushun city

Liaoning province.The results showed that(1) The survival rate of different plant was from 21% to 85%.The survival rate of Ulmus pumila and Astragalus adsurgens was 81% and 85% respectively and that of Populus simionii

Robinia pseudoacacia and Rekoelreuteria panaiculata was about 70%.(2) Vegetation can improve the contents of organic matter

total N

P_2O_5 in different soil depths

but the degree of improvement changed with soil depths

nutrient varieties and reclamation time.(3) At the same soil depth

Biological compound fertilizers

biopreparate

absorbent polymers can improve the contents of organic matter and decrease that of P_2O_5;Only absorbent polymers can result in the increase of soil total kalium contents;(4) Biological compound fertilizers

biopreparate

absorbent polymer can increase the DBH and height net growth of per year

but effect degree of absorbent polymer is the highest.