Affiliation:
1. School of Management, Gansu Agricultural University, Lanzhou 730070, China
2. College of Forestry and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China
3. College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China
4. Institute of Dryland Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China
Abstract
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 0~60 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 °C to 23.1 °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/m3 to 1.40 g/m3, 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.
Funder
key R&D Project in Gansu Province
Gansu Province Higher Education Institutions Industrial Support Program Project
National Key Technology Research &Development Program of China
Subject
Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment,Geography, Planning and Development,Building and Construction