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| Soil Quality of Surface Reclaimed Farmland in Large Open-cast Mining Area of Shanxi Province |
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| KeyWord:reclamation of dump site; farmland; soil quality; open-cast mining |
| Author Name | Affiliation | | CAO Yin-gui | School of Land Science and Technology, China University of Geosciences, Beijing 100083, China
Key Lab of Land Consolidation, LMR, Beijing 100035, China | | BAI Zhong-ke | School of Land Science and Technology, China University of Geosciences, Beijing 100083, China
Key Lab of Land Consolidation, LMR, Beijing 100035, China | | ZHANG Geng-jie | School of Land Science and Technology, China University of Geosciences, Beijing 100083, China | | ZHOU Wei | School of Land Science and Technology, China University of Geosciences, Beijing 100083, China
Key Lab of Land Consolidation, LMR, Beijing 100035, China | | WANG Jin-man | School of Land Science and Technology, China University of Geosciences, Beijing 100083, China
Key Lab of Land Consolidation, LMR, Beijing 100035, China | | YU Qin-fei | School of Land Science and Technology, China University of Geosciences, Beijing 100083, China | | DU Zhen-zhou | School of Land Science and Technology, China University of Geosciences, Beijing 100083, China |
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| Abstract: |
| To assess the impacts of land reclamation on soil quality in mining area, we compared the physicochemical properties of surface soils from reclaimed farmlands with those from the un-reclaimed lands and undamaged farmlands using a total of 18 plots with different land types and reclamation duration. All reclaimed farmlands had higher soil bulk density, field moisture capacity, pH, total phosphorus, total potassium, available phosphorus and available potassium, but lower organic matter and total nitrogen than the undamaged farmlands did. For both reclaimed and undamaged agriculture lands, soils had lower density and pH, but better soil fertility at 0~10 cm than at 10~20 cm layers. Most of the physicochemical properties of soils at the depth of 0~10 cm were higher in the reclaimed cultivated lands and reclaimed woodlands than in the undamaged cultivated lands. Soil bulk density and available potassium of the cultivated lands with 13 year reclamation were not significantly different from those of the undamaged farmlands. Most of the physicochemical properties of the woodlands with 19 years reclamation were better than those of the undamaged woodlands. Taking together, reclaiming lands in mining areas would improve soil quality. |
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