Potential For Vegetation-Based River Management In Dryland, Saline Catchments

摘要: The approaches used to manage rivers have been developed and adapted many different problems settings. Because of their relatively low cost, vegetation-based implemented at the reach, landholder catchment scales become foundation for river management in most landscapes. In dryland agricultural catchments, secondary (anthropogenic) salinity caused by clearing native vegetation has resulted rising saline groundwater, streamflow values that exceed seawater severe degradation riparian communities. potential effectiveness strategies these landscapes remains largely unknown, yet are still widely pursued. This study initially investigated patterns recovery recolonization following a large flood disturbed system. A conceptual model was describe spatial where types had regrown recovered relation controls exerted salinity, surface texture characteristics, topography reach morphology. Using this model, options reaches were developed, stabilizing using 1-D hydraulic modelling approach. finds with high stream (20000-93000mgL ), there is strong successful management, but only selected reaches. Results showed changes power channel velocity not associated areas degradation. Rather, complex interplay between morphology, slope places growth within reach. paper outlines an approach evaluate success It identifies need prioritize investment based on following: understanding factors controlling revegetation potential, likely impact mitigating adverse proximity high-value infrastructure biodiversity assets.