摘要
土壤有机碳不但是土壤肥力形成、粮食生产和土壤健康的基础,而且在全球碳平衡中起着关键的作用,因此,明晰土壤有机碳时空变化规律对于保障土壤健康和粮食安全、发挥土壤生态系统服务功能和应对气候变化等均具有重要意义。本文首先介绍了土壤有机碳时空变化的主要驱动因素和估算方法,随后分析了全球及国家等相对较大尺度上土壤有机碳时空变化研究的主要进展,最后从土壤有机碳模型结构改进、驱动数据分辨率提升、不确定性量化评估等方面综合分析了未来土壤有机碳时空变化研究需亟待解决的重要科学问题。
Soil organic carbon(SOC)forms the basis of soil fertility,food production,and soil health,and plays a key role in global carbon balance.Consequently,accurate characterization of SOC spatio-temporal changes is extremely important for ensuring the soil health and food security,long-term stability of the ecosystem,and the mitigation and adaptation to climate change.In this study,we first reviewed maindriving factors of spatio-temporal SOC change and the approaches in estimating SOC spatio-temporal changes,and then summarized the existing large-scale studies(global/national)on SOC spatio-temporal changes.Finally,we proposed the possible challenges from the aspects of SOC model structure improvement,driving data quality,uncertainty quantification.This review may provide some guidances for large-scale spatio-temporal change research of SOC.
作者
张秀
赵永存
谢恩泽
彭雨璇
陆访仪
ZHANG Xiu;ZHAO Yong-cun;XIE En-ze;PENG Yu-xuan;LU Fang-yi(State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,Chi na;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2020年第4期673-679,共7页
Journal of Agro-Environment Science
基金
国家自然科学基金项目(41971067)
国家重点研发计划项目(2017YFA0603002)。
