氮添加对森林土壤呼吸的影响研究进展  

Research Progress on Response of Forest Soil Respiration to Nitrogen Addition

作　　者：张力元 邢亚娟[1] 

机构地区：[1]黑龙江大学现代农业与生态环境学院,黑龙江 哈尔滨

出　　处：《世界生态学》2021年第4期675-683,共9页International Journal of Ecology

摘　　要：森林土壤呼吸作为CO2的巨大排放源,对全球气候变化有至关重要的作用,土壤呼吸速率过高可能引起碳循环失衡进而导致气候变暖不断加剧。而森林土壤呼吸的变化与全球氮沉降的加剧有着密切的相关性,不同的森林生态群落可能会对氮沉降作出不同的反应,因此关于模拟氮沉降研究森林土壤呼吸变化,成为了近年来研究的热点问题。本文综述了土壤呼吸及其组分对氮沉降的响应,分析在氮添加作用下,土壤微生物、凋落物及根系生物量对土壤呼吸的影响,并在此基础上进行深入的探讨和展望,以期为探索森林土壤呼吸对氮沉降的作用提供理论参考。Forest soil respiration, as a huge emission source of CO2, plays a vital role in global climate change. Too high soil respiration rate may cause carbon cycle imbalance, and then lead to climate warming. The change of forest soil respiration is closely related to the intensification of global nitrogen deposition. Different forest ecological communities may respond differently to nitrogen deposition. Therefore, the study of forest soil respiration by simulating nitrogen deposition has become a hot issue in recent years. This paper summarizes the response of soil respiration and its components to nitrogen deposition, analyzes the effects of soil microorganisms, litter and root biomass on soil respiration under the action of nitrogen addition, and makes an in-depth discussion and Prospect on this basis, in order to provide a theoretical reference for exploring the effect of forest soil respiration on nitrogen deposition.

关 键 词：土壤呼吸 氮沉降 土壤微生物 凋落物 根系生物量 

分 类 号：S71[农业科学—林学]