| Autor: |
Weijie Dai, Ping Zhang, Fen Yang, Min Wang, Huixian Yang, Zhiying Li, Mei Wang, Renlu Liu, Yuanying Huang, Song Wu, Genhe He, Jing Zhou, Chaoyang Wei |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
The Science of the total environment. 850 |
| ISSN: |
1879-1026 |
| Popis: |
The mining of ionic rare earth elements in Ganzhou left large area of barren tailings with severe vegetation destruction in pressing needs of remediation. However, the remediating effects of soil additives combined with revegetation on the preservation of nutrients in the tailings and microbial communities were rarely studied. For this purpose, pilot experiments were implemented in a field, with the control group (CK) only cultivating plants without adding materials, and three treatments including peanut straw biochar composite (T1), phosphorus‑magnesium composite (T2) and modified zeolite composite (T3) along with the cultivation of Medicago sativa L., Paspalum vaginatum Sw. and Lolium perenne L. Soil pH and organic matter in CK significantly decreased from 4.90 to 4.17 and from 6.62 g/kg to 3.87 g/kg after six months, respectively (p ≤ 0.05), while all the treatments could effectively buffer soil acidification (over 5.74) and delay the loss of soil organic matter. Soil cation exchange capacity was still below the detection limit in all the groups except T2. The results of rainfall runoff monitoring indicated that compared with CK, only T2 could significantly reduce the runoff loss of soil NO |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect