论文部分内容阅读
土壤植硅体封存有机碳(phytolith-occluded organic carbon,PhytOC)是植物在地质历史时期固碳的重要形式之一,不同植物、不同器官、不同组织、不同生长时期的植硅体形态、含量、大小、分布、组合有所不同。土壤中植硅体碳积累潜力主要受气候变化、植物生产力、植硅体固碳效率、植硅体碳稳定性、土地利用方式、农艺措施、国家宏观政策等因素的影响。本文对各因素进行了较深入的分析。同时指出,固碳机理、植硅体固碳高效品种选育、人为干扰下农林生态系统植硅体碳循环过程为今后植硅体碳汇研究的重点。
Soil phytolith-occluded organic carbon (phytolith-occluded organic carbon, PhytOC) is one of the important forms of plant carbon sequestration during geological history. The morphology, content, distribution and structure of phytolith-occluded organic carbon in different plants, organs, tissues and different growth stages, Size, distribution, combination is different. Potential carbon sequestration of phytoliths in soils is mainly affected by climate change, plant productivity, carbon sequestration efficiency of phytoliths, carbon stability of phytoliths, land use patterns, agronomic practices and national macroeconomic policies. This article conducted a more in-depth analysis of the various factors. At the same time, it is pointed out that carbon sequestration mechanism, breeding of high carbon sequestering carbon sequestration plants and anthropogenic disturbance of carbon cycling in phytoplankton in agricultural and forestry ecosystems are the key points in the future research on phytolith carbon sequestration.