Affiliation:
1. Department of Herbage Breeding, Prataculture Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150081, China
2. State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081, China
Abstract
Understanding the effects of short-term artificial revegetation on preventing soil degradation in erosion gullies of black soil areas is essential to choosing the most suitable species of vegetation for controlling the development of erosion gullies. A field experiment with short-term artificial revegetation with herbaceous species (Medicago sativa L., Glycyrrhiza pallidiflora Maxim., Elytrigia repens (L.) Desv. ex Nevski, Rheum palmatum L., Asparagus officinalis L., Trifolium repens L., Bromus inermis Leyss., Elymus dahuricus Turcz.) and a runoff scouring test were conducted in a typical erosion gully in a black soil area. Soil erosion, physicochemical characteristics, and shoot/root characteristics were measured to evaluate the effects of short-term artificial revegetation. Short-term artificial revegetation significantly decreased (p < 0.05) sediment yield by 91.1% ± 7.2% compared with that of bare soil. Soil total nitrogen (TN), total potassium (TP), available phosphorus (AP), cation exchange capacity (CEC), water-stable aggregates > 0.25 mm (WR0.25), and aggregate mean weight diameter (MWD) and mean geometric diameter (GWD) were significantly correlated with vegetated treatments, indicating they were factors sensitive to short-term artificial revegetation. Except for total potassium (TK), the other soil characteristics decreased in vegetated treatments. In addition to increasing TK, vegetated treatments also increased soil available nitrogen (AN)/TN ratios in the short term. The overall effects of different herbaceous species on soil and water conservation, soil quality, and vegetation growth were evaluated, and Trifolium repens L. is the most suitable for preventing soil degradation in an erosion gully. The results of this study will provide a reference for the restoration and protection of the ecological environment in black soil areas with gully erosion.
Funder
National Key Research & Development Program of China
Provincial Key Research and Development Program of Heilongjiang
Program of Scientific and Technological Innovation Project in the Heilongjiang Academy of Agricultural Science
Scientific Research Operation Expenses for Provincial Scientific Research Institutes in Heilongjiang Province
Young Scientist Group Project of Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences
Reference53 articles.
1. Changes of soil quality induced by different vegetation restoration in the collapsing gully erosion areas of southern China;Wen;Int. Soil Water Conserv. Res.,2021
2. Response of gully morphology and density to the spatial and rainy-season monthly variation of rainfall at the regional scale of the Chinese Loess Plateau;Chen;Catena,2024
3. Liu, X., Li, H., Zhang, S., Cruse, R.M., and Zhang, X. (2019). Gully Erosion Control Practices in Northeast China: A Review. Sustainability, 11.
4. Gully erosion: Impacts, factors and control;Valentin;Catena,2005
5. Goss, M.J., and Oliver, M. (2023). Water induced soil erosion. Encyclopedia of Soils in the Environment, Academic Press. [2nd ed.].