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Increasing anthropogenic nitrogen inputs and riverine DIN exports from the Changjiang River basin

Our result indicates that anthropogenically enhanced N inputs dominate and will continue to dominate river DIN yields under changing human pressures in the basin. Therefore, nitrogen pollution is and…

Consequences of the cultivation of energy crops for the global nitrogen cycle

We quantified the impact of the production of energy crops on the global N cycle for the recently published OECD “Global cooperation for environmental policy” (GC) scenario. We project that large…

Global nitrogen and phosphate in urban wastewater for the period 1970 to 2050

This paper constitutes the first spatially explicit, global assessment of sewage N and P emissions to surface water for the period 1970 to 2000, and the first projection of such N and P emissions for…

Global patterns of dissolved silica export to the coastal zone: Results from a spatially explicit global model

This study presents a model for river export of dissolved SiO 2 , with river-basin spatial scale and an annual temporal scale. The model is based on four variables with a significant influence on DSi…

A framework to identify appropriate spatial and temporal scales for modeling N flows from watersheds

Many different large-scalewatershed nitrogen (N) flowmodels exist, which describe processes related to the horizontal movement of N through large drainage networks of river basins. Equations of such…

Denitritication across landscapes and waterscapes: a synthesis

Both newly fixed N and recycled N (e.g., manure) are processed by terrestrial ecosystems. A substantial portion of this recycled N is subsequently transferred to groundwater, wetlands, lakes, rivers…

Nitrate leaching in agriculture to upper groundwater in the sandy regions of the Netherlands during the 1992-1995 period

The Dutch National Monitoring Programme for Effectiveness of the Minerals Policy (LMM) was initiated to allow detection of a statutory reduction in nitrate leaching caused by a decreasing N load. The…

Environmental effects of manure policy options in the Netherlands

This study explores the effects of manure policy options for agricultural land in The Netherlands on nitrate leaching to groundwater, ammonia and nitrous oxide emissions to the atmosphere and on…

Economic and environmental effects of the manure policy in the Netherlands: synthesis of integrated ex-post and ex-ante evaluation

This paper summarises the results of both an ex-post evaluation of the Dutch Mineral Accounting System (MINAS) and an ex-ante evaluation of the effect of different levy-free surplus values.

Fuzzy modeling of cyanobacterial surface waterblooms: validation with NOAA-AVHRR satellite images

Surface waterblooms of toxic cyanobacteria (scums) interfere with the use of lakes, for instance in the production of drinking water or for recreation. Routine monitoring data are not sufficient for…