Volume 1 (2025) 

The effects of grassland degradation and temperature changes on soil organic phosphorus mineralization characteristics and temperature sensitivity in alpine regions

Huixia Li, Xiaofeng Hu, Yuguo Jiao, Xiaoyan Guan

Volume 1 (2025), Article ID: eip1v0517a 

Published: 2025-05-17 (Received: 2025-02-18; Revised: 2025-04-30; Accepted: 2025-05-15)

DOI:  https://doi.org/10.5281/zenodo.15636610  

Citation

Li H, Hu X, Jiao Y, Guan X. The effects of grassland degradation and temperature changes on soil organic phosphorus mineralization characteristics and temperature sensitivity in alpine regions. Engineering Innovation and Practice, 2025, 1, eip1v0517a.

Abstract

Grassland degradation is one of the major environmental issues threatening alpine ecosystems globally, profoundly affecting soil nutrient cycling and ecological functions. This study investigated the impacts of grassland degradation and temperature gradients (5°C, 10°C, 15°C) on soil organic phosphorus (P) mineralization characteristics and temperature sensitivity through an isothermal and moisture-controlled incubation experiment. The study was conducted in the Zoige Plateau, focusing on non-degraded meadows (ND), lightly degraded meadows (LD), moderately degraded meadows (MD), and heavily degraded meadows (HD). The results showed that the soil organic P mineralization rate and potential varied significantly over incubation time across different degradation levels, with interactive effects of degradation and temperature playing a critical role in the mineralization process. At high temperatures (≥15°C), grassland degradation significantly reduced net mineralization rates and mineralization potential, with MD and HD soils exhibiting a 55.8% and 57.2% reduction in net mineralization rates and a 29.5% and 40.4% decrease in mineralization potential (B₀ values) compared to ND soils, respectively. Additionally, the temperature sensitivity coefficient (Q₁₀) of soil organic P mineralization decreased with increasing degradation levels, with ND soils showing significantly higher Q₁₀ values than degraded soils, indicating that grassland degradation weakened the soil’s response to temperature changes. This study highlights the negative effects of grassland degradation on soil organic P mineralization and its temperature sensitivity, emphasizing that temperature is a crucial driver regulating soil organic P mineralization. Furthermore, it discusses the potential risks of exacerbated phosphorus cycle imbalances under global warming scenarios due to grassland degradation. The findings provide a scientific basis for ecological restoration and soil phosphorus management in alpine grasslands, contributing to the sustainable development of grassland ecosystems under climate change.

Keywords

grassland degradation, soil organic phosphorus, temperature sensitivity, alpine ecosystems, phosphorus cycle

References

[1] Allah D. Research progress of grassland ecosystem: A case study of China. Advances in Resources Research, 2023, 3(2), 51-64. 

[2] Lu X. Degraded grassland vegetation and soil characteristics: Challenges, opportunities, and sustainable development. Advances in Resources Research, 2024, 4(2), 205-220. 

[3] Wen Z. Impacts of grazing activities on grassland ecosystems. Geographical Research Bulletin, 2023, 2, 234-237. 

[4] Ma Y, Zhang D. Research progress on the regulatory mechanisms of rhizosphere processes on nutrient cycling in grasslands. Acta Prataculturae Sinica, 2020, 29(11), 172-182. 

[5] Zeng Q, Xiong C, Yin M, et al. Advances in the ecological functions and community assembly processes of plant microbiomes. Biodiversity Science, 2023, 31(4), 182-198. 

[6] Hou T, Yu D, He X, et al. Effects of climate warming on soil organic carbon transformation from a microbial perspective. Soil Science, 2025, 13(1), 58-67. 

[7] Zhang L, Li J. Sustainable land management and degraded grassland restoration: Key measures for vegetation and soil health. Resources Data Journal, 2024, 3, 175-178. 

[8] Liu J, Zhou J, Li X, et al. Research progress on the analysis methods of soil organic phosphorus forms and mineralization rate. Soil Bulletin, 2023, 54(5), 1215-1225. 

[9] Han X, Guo N, Li D, et al. Effects of nitrogen addition on biomass and soil carbon and nitrogen dynamics in different grasslands of Inner Mongolia. Acta Prataculturae Sinica, 2022, 31(1), 13-25. 

[10] Wang C, Long R, Wang Q, et al. Responses of plant diversity and productivity to changes in soil nutrient conditions under grazing disturbance in alpine meadows. Acta Ecologica Sinica, 2008, 28(9), 4144-4152. 

[11] Dong X, Chen Q, Zang S, et al. Effects of temperature and moisture on soil organic carbon mineralization in permafrost forest areas of the Greater Khingan Mountains. Acta Scientiae Circumstantiae, 2019, 39(12), 4269-4275. 

[12] Qian H, Pu Y, Lang S, et al. Responses of soil organic phosphorus mineralization characteristics to meadow degradation and temperature in alpine regions. Acta Prataculturae Sinica, 2023, 32(10), 15-27. 

[13] Yang W, Zeng L, Li X. Research progress on carbon sink effects and their influencing factors. Advances in Earth Science, 2023, 38(2), 151-167. 

[14] Tian Q, Liu D, Liao X, et al. Effects of nitrogen application on biogenic binding agents and stability of soil aggregates in alpine grasslands. Acta Prataculturae Sinica, 2024, 33(11), 46-57. 

[15] Fan D, Kong W. Effects of fencing on soil prokaryotic microbial diversity in different grassland types on the Qinghai-Tibet Plateau. Acta Ecologica Sinica, 2024, 44(2), 651-661. 

[16] Li Y, Chen Y, Yang S, et al. Effects of organic acids secreted by plant roots on soil carbon and nitrogen mineralization. Journal of Ecology and Environmental Sciences, 2024, 33(9), 1362-1371. 

[17] Song L, Ma W, Li G, et al. Effects of temperature changes on soil nitrogen mineralization at different degradation gradients in Gahai Wetland. Acta Prataculturae Sinica, 2021, 30(9), 27-37. 

[18] Chen X, Zhou Y, Yang Y, et al. Effects of different mulching measures on temperature, humidity, and survival of stripped sod stacks in alpine regions. Journal of Glaciology and Geocryology, 2021, 43(5), 1334-1343. 

[19] Ding Y, Liu X, Guo L, et al. Effects of shrub encroachment on soil organic carbon, nitrogen, phosphorus nutrients, and enzyme activities in grasslands on the Loess Plateau. Bulletin of Soil and Water Conservation, 2024, 44(5), 243-250. 

[20] Zhang Y, Yan J, Cheng X. Research progress on the effects of climate change and human activities on wetlands on the Qinghai-Tibet Plateau. Acta Ecologica Sinica, 2023, 43(6), 2180-2193. 

[21] Wen M, Mao X, Yang J, et al. Soil nutrient and nitrogen cycling functional gene abundance characteristics in natural and artificial vegetation of desert grasslands. Arid Zone Research, 2024, 41(12), 2027-2034.