Xi Lin , Shengwei Zhang , Xingyu Zhao , Ruishen Li , Shuai Wang , Lin Yang , Xinghui Chen
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引用次数: 0
Abstract
Runoff generation is intimately related to topography, climate, and vegetation. However, the combined impacts of different vegetation restorations on runoff under global climate change have not been quantitatively assessed. When climate exceeds specific thresholds, the inhibitory effect of vegetation restoration on runoff may diminish. Here, we collected 771 observations for meta-analysis and used segmented regression to determine the global threshold response of vegetation restoration for climate-related variables on runoff and soil erosion. We found the effect of vegetation restoration in inhibiting soil erosion and runoff increased when MAP (mean annual precipitation) exceeded the thresholds of about 331 mm and 540 mm, respectively. Furthermore, at rainfall intensity above the threshold of 48 mm/h, the effect of vegetation restoration on erosion control increases. Comprehensive analysis indicates that grassland revegetation is more successful in decreasing of runoff and soil erosion in the North Temperate Zone. Temperature and precipitation directly or indirectly influenced the effects of shrubland runoff reduction, and the relationship varied with changes in temperature and precipitation. Our findings contribute to guiding regional governments and decision makers in developing and implementing rational vegetation restoration measures for sustainable water resource management in the future.
期刊介绍：
The Journal of Hydrology publishes original research papers and comprehensive reviews in all the subfields of the hydrological sciences including water based management and policy issues that impact on economics and society. These comprise, but are not limited to the physical, chemical, biogeochemical, stochastic and systems aspects of surface and groundwater hydrology, hydrometeorology and hydrogeology. Relevant topics incorporating the insights and methodologies of disciplines such as climatology, water resource systems, hydraulics, agrohydrology, geomorphology, soil science, instrumentation and remote sensing, civil and environmental engineering are included. Social science perspectives on hydrological problems such as resource and ecological economics, environmental sociology, psychology and behavioural science, management and policy analysis are also invited. Multi-and interdisciplinary analyses of hydrological problems are within scope. The science published in the Journal of Hydrology is relevant to catchment scales rather than exclusively to a local scale or site.
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