Implementing the Riparian Nitrogen Model to assess the role of riparian buffers in the Maroochy Catchment
نویسنده
چکیده
Riparian zones can provide a protective buffer between streams and adjacent land-based activities by removing nitrate from shallow groundwater flowing through them. Catchment-scale waterquality models are useful tools for predicting catchment behaviour under various climatic conditions and land-use scenarios. In this paper, we use the Riparian Nitrate Model (RNM) to investigate the potential role for riparian zones in the Maroochy catchment to reduce nitrate loads to streams. The RNM operates as a filter (plug-in) module within E2; the latter is a node-link catchment-scale model capable of predicting the hydrologic behaviour of catchments.
منابع مشابه
Nitrogen retention in the riparian zone of catchments underlain by discontinuous permafrost
1. Riparian zones function as important ecotones that reduce nitrate concentration in groundwater and inputs into streams. In the boreal forest of interior Alaska, permafrost confines subsurface flow through the riparian zone to shallow organic horizons, where plant uptake of nitrate and denitrification are typically high. 2. In this study, riparian zone nitrogen retention was examined in a hig...
متن کاملRiparian buffer strips as a multifunctional management tool in agricultural landscapes: introduction.
Catchment riparian areas are considered key zones to target mitigation measures aimed at interrupting the movement of diffuse substances from agricultural land to surface waters. Hence, unfertilized buffer strips have become a widely studied and implemented "edge of field" mitigation measure assumed to provide an effective physical barrier against nitrogen (N), phosphorus (P), and sediment tran...
متن کاملHillslope hydrologic connectivity controls riparian groundwater turnover: Implications of catchment structure for riparian buffering and stream water sources
[1] Hydrologic connectivity between catchment upland and near stream areas is essential for the transmission of water, solutes, and nutrients to streams. However, our current understanding of the role of riparian zones in mediating landscape hydrologic connectivity and the catchment scale export of water and solutes is limited. We tested the relationship between the duration of hillslope‐ripari...
متن کاملEvaluating hillslope and riparian contributions to dissolved nitrogen (N) export from a boreal forest catchment
Catchment science has long held that the chemistry of small streams reflects the landscapes they drain. However, understanding the contribution of different landscape units to stream chemistry remains a challenge which frequently limits our understanding of export dynamics. For limiting nutrients such as nitrogen (N), an implicit assumption is that themost spatially extensive landscape units (e...
متن کاملMeta-analysis of nitrogen removal in riparian buffers.
Riparian buffers, the vegetated region adjacent to streams and wetlands, are thought to be effective at intercepting and reducing nitrogen loads entering water bodies. Riparian buffer width is thought to be positively related to nitrogen removal effectiveness by influencing nitrogen retention or removal. We surveyed the scientific literature containing data on riparian buffers and nitrogen conc...
متن کامل