磷添加对森林土壤有机碳影响的研究进展  

Research Progress on Effects of Phosphorus Addition on Forest Soil Organic Carbon

作　　者：许秋月 何敏 夏允 杨柳明[1,2,3] 杨玉盛[1,2,3] 范跃新[1,2,3] XU Qiuyue;HE Min;XIA Yun;YANG Liuming;YANG Yusheng;FAN Yuexin(School of Geographical Sciences,School of Carbon Neutrality Future Technology,Fujian Normal University,Fuzhou 350117,China;State Key Laboratory for Subtropical Mountain Ecology of the Ministry of Science and Technology and Fujian Province,Fujian Normal University,Fuzhou 350117,China;Institute of Geography,Fujian Normal University,Fuzhou 350117,China)

机构地区：[1]福建师范大学地理科学学院、碳中和未来技术学院,福州350117 [2]福建师范大学湿润亚热带山地生态国家重点实验室培育基地,福州350117 [3]福建师范大学地理研究所,福州350117

出　　处：《亚热带资源与环境学报》2024年第1期9-15,共7页Journal of Subtropical Resources and Environment

基　　金：国家自然科学基金面上项目(41977090、32171587);国家自然科学基金重大项目(32192433)。

摘　　要：土壤养分供应能力的变化可能会改变森林土壤碳库的源、汇功能。磷是陆地生态系统的限制性养分之一,其有效性变化可直接或间接调控土壤有机碳的周转。目前已有诸多文献探讨了磷添加对森林土壤有机碳的影响及其调控机制,但还缺乏相对系统全面的总结。本研究综述了磷添加对森林土壤有机碳含量的影响,并从有机碳输入(凋落物、根系分泌物)、有机碳输出(土壤呼吸)和有机碳固存机制3个方面揭示磷添加对森林土壤有机碳的影响机制。研究发现磷添加后土壤有机碳含量呈现增加、降低和变化不显著3种结果,主要与生态系统类型、磷添加的强度、土壤碳周转过程等有关。此外,施磷持续时间较短、有机碳组分测定方法不统一以及揭示碳周转过程的手段缺失,是系统预测和评估磷添加对土壤有机碳影响的制约因素。未来应重点关注长期施磷对土壤有机碳的影响,并加强与微生物功能组学新技术的融合,同时考虑全球变化背景下氮磷交互作用对森林土壤有机碳的贡献。结果有助于深入理解和准确预测未来气候变化情景下森林土壤碳动态,为森林管理提供理论依据。The change of soil nutrient supply capacity may change the functions of forest soil carbon pool as source and sink.Phosphorus is one of the limiting nutrients in terrestrial ecosystem,and its availability can directly or indirectly regulate the turnover of soil organic carbon.At present,many literatures have discussed the effect of phosphorus addition on forest soil organic carbon and its regulation mechanism,but relatively systematic and comprehensive summary is still lacking.The effects of phosphorus addition on forest soil organic carbon content were reviewed and the influence mechanism of phosphorus addition on forest soil organic carbon was revealed from three aspects:organic carbon input(litter and root exudates),organic carbon output(soil respiration)and the mechanism of organic carbon sequestration.It was found that soil organic carbon content increased,decreased and did not change significantly after phosphorus addition,which was mainly related to ecosystem type,intensity of phosphorus addition and soil carbon turnover process.In addition,the short duration of phosphorus application,the inconsistent determination methods of organic carbon components and the lack of means to reveal the carbon turnover process are the constraints to systematically predict and evaluate the effects of phosphorus addition on soil organic carbon.In the future,we should focus on the effects of long-term phosphorus application on soil organic carbon,strengthen the integration of new technologies of microbial functional omics,and consider the contribution of nitrogen and phosphorus interaction to forest soil organic carbon under the background of global change.The results are helpful to further understand and accurately predict forest soil carbon dynamics under future climate change scenarios,and provide theoretical basis for forest management.

关 键 词：土壤有机碳组分 颗粒态碳 矿物结合态碳 微生物残体碳 根际过程 

分 类 号：S154.1[农业科学—土壤学]