The variation of organic-mineral complex content and the distribution characteristics of organic carbon fractions in black soil plough layer under different tillage periods;

The study results of the content variation of organic carbon and its component in black soil during different tillage period show that both the content of TOC and its component decreasing and the soil Kos value increasing in ploughing layer and ploughing bottom layer are rapid at first 50 years cultivation.

Comparison of Several Reclamation Modes for Land Discarded by Iron Mines around Anshan;

Ecological Effect of Reclamation and Afforestation in Coal Refuse Pile;

Classification of Mines to Be Reclaimed in Sichuan and Research on Countermeasures for Their Reclamation;

Research of waste disposal and rehabilitation plan of extension in Malanzhuang Iron Mine;

Having adopted the most advanced "three-unders" coal mining and land rehabilitation techniques,the author carried out rehabilitation of waste filling to some mining sinkholes of Lǚjiatuo Branch,created a good ecological environment as the new location of the relocation villages,and solved th.

The rehabilitation of subsidence lands of coal extraction has been one of the important questions cared by ecology, environment, economics and society for many years.