National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Engineering Research Center for Non-point Source Pollution Control, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, China; College of Ecology, Resources and Environment, Dezhou University, Dezhou, Shandong, 253023, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China; International Institute of Soil and Water Conservation, Meizhou, 514000, China.
National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Engineering Research Center for Non-point Source Pollution Control, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, China; International Institute of Soil and Water Conservation, Meizhou, 514000, China.
J Environ Manage. 2021 May 1;285:112165. doi: 10.1016/j.jenvman.2021.112165. Epub 2021 Feb 15.
Grasses and shrubs occupy large areas of fragile ecosystems following ecological restoration. Therefore, it is increasingly important to assess and monitor the environmental safety of pastures. However, previous studies on this topic lacked systematicity and directionality. In this study, we reviewed the literature on runoff and erosion to summarise the core issues for future research, resolve the current research bottleneck, and promote the balance of soil, water, and energy in fragile ecological areas. The results of the review indicate that coverage remained the main vegetation feature considered when characterising rangeland slope erosion and runoff. Erosion energy should be comprehensively considered based on the influence of vegetation on rainfall distribution and runoff erosivity. Rangeland slope erosion and runoff changes can only be explained by integrating the above- and below-ground characteristics of vegetation. Additionally, the impact of vegetation on runoff separation and the sediment transport processes at different erosion stages under rainfall conditions vary. Therefore, studying the comprehensive indicators of vegetation at different erosion stages in response to erosion and runoff will be vital in rangeland erosion research. From the perspective of disciplinary development, this study can promote the further development of soil erosion, ecology, soil science, hydrology, hydraulics, and other disciplines.
草地和灌丛在生态恢复后占据了大面积的脆弱生态系统。因此，评估和监测牧场的环境安全性变得越来越重要。然而，以前关于这个主题的研究缺乏系统性和方向性。在这项研究中，我们回顾了有关径流和侵蚀的文献，以总结未来研究的核心问题，解决当前的研究瓶颈，并促进脆弱生态地区的土壤、水和能源平衡。综述结果表明，在表征草地坡面侵蚀和径流时，植被覆盖仍然是主要的植被特征。应综合考虑植被对降雨分布和径流侵蚀力的影响来确定侵蚀能。只有综合考虑植被的地上和地下特征，才能解释草地坡面侵蚀和径流的变化。此外，植被对降雨条件下不同侵蚀阶段的径流分离和泥沙输移过程的影响也不同。因此，研究植被在不同侵蚀阶段对侵蚀和径流的综合响应指标将是草地侵蚀研究的关键。从学科发展的角度来看，本研究可以促进土壤侵蚀、生态学、土壤科学、水文学、水力学等学科的进一步发展。
