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- Title
Variation of Nutrients and Selected Soil Properties in Reclaimed Soil of Different Ages at a Coal-mining Subsidence Area on the Loess Plateau, China.
- Authors
Tingliang Li; Jiwei Gao; Jianping Hong; Yinghe Xie; Zhiqiang Gao; Huisheng Meng; Li Li; Lixia Meng
- Abstract
Reclaiming the subsidence area that results from coal-mining could alleviate the shortage of arable land in China. This study examined the effects of fertilization and reclamation age on soil nutrients and other properties in the 0-100 cm profile at an underground coal mine site on the Loess Plateau of China. Soil samples were collected representing three successive reclamation ages (1, 3 and 7 years) and an undisturbed reference farmland soil. Treatments included chemical fertilizers only (CF), organic fertilizers only (OF), a combination of 50% chemical fertilizers and 50% organic fertilizers (COF) and a no-fertilizer control (CK). The study showed that Soil pH and electrical conductivity ranged from 8.03 to 8.43 and 0.11 to 0.25 dS/m, respectively, and no significant differences were found due to any soil depths, fertilizer treatments, reclamation ages. Nutrient contents tended to increase over time as a whole. Additionally, applying manure had a better effect on increasing, available phosphorus and potassium, organic matter and cation exchange capacity in the 0-20 cm soil layer (topsoil) than did applying only chemical fertilizer or a combination of chemical and organic fertilizer; however, no obvious change was found in the properties of the 20-100 cm soil layers for any treatments. Given the above, it is feasible for coal-mining subsidence areas to be reclaimed and returned to farmland on the Loess Plateau of China.
- Subjects
COAL mining; ORGANIC fertilizers; SOIL testing; PHOSPHORUS in soils; POTASSIUM
- Publication
Ekoloji Dergisi, 2018, Issue 106, p547
- ISSN
1300-1361
- Publication type
Article