Effects of degradation level and vegetation recovery age on soil erodibility of alpine grasslands on the Qinghai-Tibetan Plateau

NWIPB OpenIR

	Effects of degradation level and vegetation recovery age on soil erodibility of alpine grasslands on the Qinghai-Tibetan Plateau
	Li, Yuanze; Lu, Bingbing; Zhou, Huakun; Zhang, Yue; Zhao, Ziwen; Chen, Wenjing; Wu, Yang; Guo, Ziqi; Jiang, Jun; Xue, Sha
	2023
发表期刊	JOURNAL OF SOILS AND SEDIMENTS
摘要	PurposeThe study of soil erodibility is an important step in understanding the mechanism of soil erosion, and is crucial to the sustainable development of grassland ecosystems. However, few studies have investigated the potential effects of different degradation levels and restoration ages on soil erodibility on the Qinghai-Tibetan Plateau where many alpine grasslands suffering from severe degradation have been restored for different years.Materials and methodsIn order to quantify the impact of alpine grassland degradation and restoration on soil erodibility, we selected different degradation levels (non-degraded, lightly degraded, moderately degraded, and heavily degraded) and restored ages (3, 8, 13, and 19 years) on the Qinghai-Tibet Plateau. Soil sampling was carried out at different depths, and the microaggregate fractal dimension (D-v), multifractal theory (D-m) and erodibility factor (K) were measured and calculated to quantify the soil changes in erodibility.Results and discussionWith the degree of degradation increased, the K value in the surface soil changed little, but the D-v value increased significantly. On the grassland recovery sequence, the K value showed a trend of increasing first and then decreasing, and the K factor and D-m of 19-y restored grasslands was reverted to the same level as that of the non-degraded site. Furthermore, the K value and D-v value increased with the increase in soil depth. Our result also shows that root biomass, microorganisms, and soil physicochemical properties including SOC, TN, TP, PSD, and MSD were all significantly correlated with K value.ConclusionsOur research proves that restoration of alpine grassland on the Qinghai-Tibet Plateau helps reduce soil erodibility, and reveals that plant roots, soil physical and chemical properties, and microorganisms play an important role in reducing soil erodibility, further deepening the influence on soil erodibility. This understanding can provide a certain theoretical basis for the sustainable development of grassland ecosystems.
收录类别	SCIE
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/61608
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Li, Yuanze,Lu, Bingbing,Zhou, Huakun,et al. Effects of degradation level and vegetation recovery age on soil erodibility of alpine grasslands on the Qinghai-Tibetan Plateau[J]. JOURNAL OF SOILS AND SEDIMENTS,2023.
APA	Li, Yuanze.,Lu, Bingbing.,Zhou, Huakun.,Zhang, Yue.,Zhao, Ziwen.,...&Xue, Sha.(2023).Effects of degradation level and vegetation recovery age on soil erodibility of alpine grasslands on the Qinghai-Tibetan Plateau.JOURNAL OF SOILS AND SEDIMENTS.
MLA	Li, Yuanze,et al."Effects of degradation level and vegetation recovery age on soil erodibility of alpine grasslands on the Qinghai-Tibetan Plateau".JOURNAL OF SOILS AND SEDIMENTS (2023).