[1]SONG Dacheng,WANG Lide,WANG Fei,et al.Characteristics of Soil Enzyme Activities and Nutrients Evolution of Different Artificial Hippophae Rhamnoides Plantations in Coal Gangue Area[J].Research of Soil and Water Conservation,2023,30(05):162-168,174.[doi:10.13869/j.cnki.rswc.2023.05.036.]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 05
Page number:
162-168,174
Column:
Public date:
2023-08-10
- Title:
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Characteristics of Soil Enzyme Activities and Nutrients Evolution of Different Artificial Hippophae Rhamnoides Plantations in Coal Gangue Area
- Author(s):
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SONG Dacheng1,2,3, WANG Lide1,2,3, WANG Fei1,3, WU Hao1,3, ZHAO Heran1,2,3, WANG Zixuan1,2,3
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(1.Gansu Desert Control Research Institute, Lanzhou 730070, China; 2.Gansu Hexi Corridor Forest Ecosystem National Research Station, Wuwei, Gansu 733000, China; 3.State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating, Wuwei, Gansu 733000, China)
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- Keywords:
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coal gangue; vegetation restoration; soil nutrient; enzyme activity; comprehensive evaluation
- CLC:
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S158; S153.6
- DOI:
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10.13869/j.cnki.rswc.2023.05.036.
- Abstract:
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[Objective] This study aims to investigate the characteristics of soil enzyme activity and nutrient evolution in artificially planted Hippophae rhamnoides forests during different afforestation periods in the abandoned mining area of Shuanglonggou, Haxi. The main environmental factors affecting changes in soil enzyme activities in the region are elucidated, providing a theoretical basis for the protection, restoration, and improvement of the ecological environment of Qilian Mountains and similar mountainous areas with mining waste. [Methods] Based on soil test data from four afforestation periods and three soil profiles in the region, multiple factor correlation analysis and redundancy analysis were used to investigate the characteristics of soil enzyme activity and nutrient evolution in Hippophae rhamnoides forests in the mining waste hills. [Results] Significant differences in soil enzyme activities were observed among the different areas, with a general trend of afforestation for 10 years>afforestation for 5 years>afforestation for 2 years>control barren land. With the restoration of the artificially planted Hippophae rhamnoides forests, the activities of sucrase, alkaline phosphatase, catalase, and urease in the soil increased by 7.93% to 238.73%, and agglomeration phenomenon was observed in the surface soil(0—5 cm). The contents of soil organic matter, total nitrogen, available potassium, nitrate nitrogen, and ammonium nitrogen increased continuously in the surface soil, while the fluctuation of available phosphorus decreased and the change in total phosphorus was not significant. Soil sucrase and alkaline phosphatase activities were significantly and extremely significantly positively correlated with ammonium nitrogen content, respectively, and catalase activity was extremely significantly negatively correlated with organic matter. Urease activity was extremely significantly positively correlated with total nitrogen, available phosphorus, and ammonium nitrogen. Total nitrogen was identified as the main environmental factor affecting soil enzyme activity in the region. [Conclusion] Artificial planting of Hippophae rhamnoides can effectively improve species diversity, promote plant community construction, increase soil nutrient accumulation, and enhance soil enzyme activity in the region.