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Construction and Application of Ecological Remediation Technology for Sandy Soils in Northwest China

文献类型： 外文期刊

作者： Jiang, Jing 1 ; Wang, Qian 1 ; Zhao, Jinmei 2 ; Zhang, Jun 3 ; Dong, Bo 3 ; Huang, Xin 1 ;

作者机构： 1.Gansu Agr Univ, Sch Management, Lanzhou 730070, Peoples R China

2.Gansu Agr Univ, Coll Forestry, Lanzhou 730070, Peoples R China

3.Gansu Agr Univ, Coll Resources & Environm Sci, Lanzhou 730070, Peoples R China

4.Gansu Acad Agr Sci, Inst Dryland Agr, Lanzhou 730070, Peoples R China

关键词： northwest Sichuan; soil remediation; enzyme activity; organic carbon; soil nitrogen; ammonia; active enzyme regulation

期刊名称：SUSTAINABILITY （ 影响因子：3.9； 五年影响因子：4.0 ）

ISSN：

年卷期： 2023 年 15 卷 20 期

页码：

收录情况： SCI

摘要： This study investigated the impact of three ecological restoration methods: PRS, OLRS, and NRM, on the soil quality and ecological environment of the cold plateau area in northwest Sichuan, China. Over a period of 3 years, these restoration modes were applied, and their effects on soil enzyme activity, organic carbon, and nitrogen were critically analyzed. The results demonstrated that PRS was the most effective restoration method, enhancing soil water content, organic activity, and enzyme content the most, followed by OLRS and NRM, respectively. In the 0 similar to 60 cm soil layer, each restoration model was able to improve the vegetation characteristics, and the modification effects were PRS > ORRS > NRM > UMD in descending order. After the restoration, the summer surface temperature decreased from 41.3 degrees C to 23.1 degrees C. The average moisture content of the soil increased from 3.11% to 5.86%. The average moisture content of the soil increased from 3.11% to 5.86%, and the bulk density decreased from 1.47 g/m(3) to 1.40 g/m(3), resulting in a more rational soil structure. This research offers invaluable insights into the nutrient restoration mechanism of sandy lands, emphasizing the significant role of appropriate vegetation restoration measures in ecological restoration. The findings further suggest the potential application of the PRS model for optimal soil repair effects in similar ecological settings.

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