title: Land use efficiency: anticipating future demand for land-sector greenhouse gas emissions abatement and managing trade-offs with agriculture, water, and biodiversity.
abstract: Competition for land is increasing, and policy needs to ensure the efficient supply of multiple ecosystem services from land systems. We modelled the spatially explicit potential future supply of ecosystem services in Australia's intensive agricultural land in response to carbon markets under four global outlooks from 2013 to 2050. We assessed the productive efficiency of greenhouse gas emissions abatement, agricultural production, water resources, and biodiversity services and compared these to production possibility frontiers (PPFs). While interacting commodity markets and carbon markets produced efficient outcomes for agricultural production and emissions abatement, more efficient outcomes were possible for water resources and biodiversity services due to weak price signals. However, when only two objectives were considered as per typical efficiency assessments, efficiency improvements involved significant unintended trade-offs for the other objectives and incurred substantial opportunity costs. Considering multiple objectives simultaneously enabled the identification of land use arrangements that were efficient over multiple ecosystem services. Efficient land use arrangements could be selected that meet society's preferences for ecosystem service provision from land by adjusting the metric used to combine multiple services. To effectively manage competition for land via land use efficiency, market incentives are needed that effectively price multiple ecosystem services.
authors.affiliation: CSIRO, Waite Campus, Urrbrae, SA, 5064, Australia.
authors.forename: Brett A
authors.initials: BA
authors.lastname: Bryan
authors.affiliation: CSIRO, Waite Campus, Urrbrae, SA, 5064, Australia.
authors.forename: Neville D
authors.initials: ND
authors.lastname: Crossman
authors.affiliation: CSIRO, Waite Campus, Urrbrae, SA, 5064, Australia.
authors.forename: Martin
authors.initials: M
authors.lastname: Nolan
authors.affiliation: CSIRO, Waite Campus, Urrbrae, SA, 5064, Australia.|College of Tourism and Environment, Shaanxi Normal University, Xi'an, Shaanxi, 710062, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.affiliation: CSIRO, EcoSciences Precinct, Dutton Park, Qld, 4102, Australia.
authors.forename: Javier
authors.initials: J
authors.lastname: Navarro
authors.affiliation: CSIRO, Waite Campus, Urrbrae, SA, 5064, Australia.
authors.forename: Jeffery D
authors.initials: JD
authors.lastname: Connor
mesh_terms: D000383:Agriculture / Q000191:economics; D000397:Air Pollution / Q000032:analysis / Q000191:economics* / Q000517:prevention & control; D001315:Australia; D044822:Biodiversity; D002244:Carbon / Q000032:analysis / Q000191:economics; D003132:Commerce; D003247:Conservation of Natural Resources / Q000191:economics / Q000379:methods*; D017753:Ecosystem; D017752:Greenhouse Effect / Q000191:economics* / Q000517:prevention & control; D008962:Models, Theoretical; D014867:Water / Q000032:analysis
chemical_list: D014867:Water; D002244:Carbon
keywords: carbon sequestration; climate change; ecosystem services; food security; land use change; scenarios; trade-offs; water resources