Research on Water-Energy-Carbon Nexus of Land Use:Theoretical Framework and Key Issues
The purposes of this study are to construct a research framework of water-energy-carbon nexus(WEC nexus)of land use,to propose key issues to deepen the interdisciplinary research of land disciplines from the perspective of multi-element coupling,and to provide reference for land use optimization for multi-objective trade-offs.The research methods include literature review,theoretical analysis and comprehensive analysis.The results show that:1)land serves as the fundamental resource,spatial carrier and rigid element of human economic and social activities.The structure,function,intensity and layout of land use directly determine the pattern and intensity of water-energy-carbon interaction,and in turn profoundly influence the water-energy-carbon nexus.2)The core of the research on water-energy-carbon nexus of land use lies in the pattern-process-mechanism-optimization-regulation of water-energy-carbon nexus at different spatiotemporal scales,reveals the influencing mechanism of land use and its change on the correlation intensity,combination pattern,coupling characteristics and embodied flow of water-energy-carbon elements from the dual perspectives of nature-society,elucidates the interaction and feedback mechanism between land use and water-energy-carbon based on element-space-system,identifies the risk of water-energy-carbon nexus system,and proposes collaborative optimization schemes and configuration countermeasures based on land use.In conclusion,in the future,from the perspective of land use change and land use transformation at different scales,the research on water-energy-carbon nexus should be conducted in the aspects of influencing mechanism,embodied flow,refined simulation,optimization and regulation and multi-element trade-offs.The influencing mechanism concerning water-energy-carbon nexus of land use should be elucidated from the multi-scales and multi-perspectives,and should explore optimization schemes for land use patterns under the synergistic constraint of water-energy-carbon.
land usewater-energy-carbon nexustheoretical frameworkkey issue