Plants & GHGs
The NZAGRC’s former nitrous oxide and soil carbon work streams were combined into one programme this year. This ensures a strong overall framework, closer communication and full GHG analyses across the programme. The programme focusses on three key areas:
1. Identifying and prioritising plant traits for low GHG emissions;
2. Mitigation practices to maintain soil carbon and reduce nitrous oxide emissions at paddock scale; and
3. Defining the achievable soil carbon stabilisation capacity of New Zealand grassland soils.
Current progress and research stories
Professor Louis Schipper
Louis Schipper is a Professor at the University of Waikato who investigates soil biogeochemical processes at landscape scales and how they might be manipulated to achieve improved environmental performance while maintaining production. For the last decade, Louis has led teams determining changes in carbon stocks of pasture soils at paddock to national scales. This research demonstrated that while carbon in the majority of pastures on flat land was at steady state, some of our important soils had lost substantial carbon while hill-country soils have gained large amounts. These data have been central to developing a national picture of New Zealand’s carbon budget. They have also used micro-meteorological approaches to evaluate high-resolution fluxes of carbon at farm scales to identify practices that increase carbon stocks, generating in-depth understanding of climatic effects (e.g., drought, rainfall) and management impacts (pasture renewal, cultivation, new pasture species). Louis is an elected fellow of the New Zealand and American soil science societies with multiple awards from the NZ Society. He has published >130 papers (Scopus H-index of 36), supervised ~40 PhD/MSc students, and developed substantial soil and environmental resources for schools.
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