草地生态系统植硅体碳研究进展
Advances in Phytolith-Occluded Organic Carbon in Grassland Ecosystems
武倩 1黄程鹏 2奇立敏 3鞠馨 1高翠萍 1韩国栋1
作者信息
- 1. 内蒙古农业大学草原与资源环境学院/草地资源教育部重点实验室,内蒙古 呼和浩特 010011
- 2. 浙江农林大学环境与资源学院,浙江 临安 311300
- 3. 中国农业科学院草原研究所,内蒙古 呼和浩特 010010
- 折叠
摘要
植硅体在硅化作用过程中包裹的部分有机碳被称为植硅体碳(Phytolith-occluded organic carbon,PhytOC),是草地碳汇的重要组成部分.植硅体碳封存对于草地生态系统碳循环的动态平衡具有重要意义,然而,草地生态系统植硅体固碳还没有得到足够多的关注和充分研究.本文对近年来陆地生态系统PhytOC的相关研究进展进行梳理,分析植物PhytOC的形成及封存、土壤PhytOC的积累及其稳定性和不同草地类型PhytOC的分布及储量,探讨人类活动干扰和全球气候变化对草地生态系统PhytOC的影响,提出了未来草地生态系统PhytOC的研究方向,为准确估测全球气候变化背景下植硅体固碳潜力和进一步完善生态系统碳循环模型提供理论依据.
Abstract
Phytolith-occluded organic carbon(PhytOC),which is a part of the organic carbon encapsu-lated during the silicification process in grassland plants,constitutes an important component of the grass-land carbon sink.The sequestration of PhytOC is important for maintaining the dynamic balance of the car-bon cycle within grassland ecosystems.However,the sequestration of PhytOC in grassland ecosystems has not received enough attention and remains insufficiently studied.In this study,we reviewed the current research progress on terrestrial ecosystem PhytOC,analyzed the formation and sequestration of plant PhytOC,the accumulation and stability of soil PhytOC,and the distribution and storage of PhytOC across different grassland types.We also discussed the impacts of human activities and global climate change on grassland PhytOC.Furthermore,the future research directions for PhytOC in grassland ecosystems were also pro-posed.An in-depth study of PhytOC in grassland ecosystems can provide a theoretical basis for accurately estimating the carbon sequestration potential of phytolith under the background of global climate change,and this could further enhance the carbon cycle model of ecosystems.
关键词
草原/碳循环/植硅体/植硅体碳/气候变化Key words
Grassland/Carbon cycle/Phytolith/PhytOC/Climate change引用本文复制引用
基金项目
国家自然科学基金项目(32301502)
内蒙古农业大学草学学科青年基金项目(IMAUCXQJ2023013)
内蒙古自然科学基金项目(2021BS03048)
出版年
2024
NETL
NSTL
万方数据