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- W2181317323 abstract "New Zealand currently intends to ratify the Kyoto Protocol. Anticipating the future need for New Zealand to report on sources and sinks of carbon (C), which may include erosion- related losses, a preliminary estimate of soil C delivered to oceans was made at the national scale. Using estimates of C concentrations delivered to rivers by different erosion processes and estimates of sediment yields for New Zealand rivers, the potential transfer of C to the ocean by erosion was estimated to be in the range of 3—11 Mt C y -1 . A national-scale programme has subsequently been established to reduce this large uncertainty in the effect of erosion on the national C budget. Nationally, we need to know how much eroded soil C is sequestered annually in land and marine environments and lost annually to the atmosphere as CO2, as well as what proportion of these fluxes is anthropogenic. Physically based models for simulating the erosion, transport, deposition, and decomposition of soil C in the landscape, as influenced by land cover, are currently being calibrated in catchment systems. Catchments selected for calibration have well-constrained sediment budgets. Measurements of C flows in riverine environments, and C partitioned between storage in sediments and loss as CO2 are being conducted. Preliminary results from this programme suggest that C transfer to the ocean environment, especially those related to anthropogenic erosion, will be at the lower end of" @default.
- W2181317323 created "2016-06-24" @default.
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- W2181317323 date "2002-01-01" @default.
- W2181317323 modified "2023-09-24" @default.
- W2181317323 title "Towards a National Assessment of Erosion-Related Soil Carbon Losses in New Zealand" @default.
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