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土壤有机碳的主导影响因子及其研究进展
引用本文:周莉,李保国,周广胜.土壤有机碳的主导影响因子及其研究进展[J].地球科学进展,2005,20(1):99-105.
作者姓名:周莉  李保国  周广胜
作者单位:1. 中国农业大学资源与环境学院,北京,100094;中国科学院植物研究所植被数量生态学重点实验室,北京,100093;西华师范大学生物系,四川,南充,637002
2. 中国农业大学资源与环境学院,北京,100094
3. 中国科学院植物研究所植被数量生态学重点实验室,北京,100093
基金项目:中国科学院知识创新工程项目;国家自然科学基金
摘    要:土壤有机碳库是全球碳循环的重要组成部分,其积累和分解的变化直接影响全球的碳平衡。理解土壤有机碳蓄积过程对生物、物理和人为因素的响应,把握关键的控制因子是准确预测土壤有机碳在全球变化情景下对大气CO 2的源/汇方向及准确评估碳收支的关键。综述了土壤有机碳主导影响因子的研究进展,并针对陆地碳循环特点,提出未来土壤有机碳研究应加强土壤有机碳过程与状态的定量化、土壤有机碳分解对环境因子的敏感性、氮沉降对土壤有机碳的影响、土壤有机碳对气候变率的响应及其反馈作用,以及土壤有机碳动态的综合模拟 5个方面的研究,为准确评估陆地碳收支提供依据。

关 键 词:陆地碳库  土壤有机碳  全球变化  影响因子
文章编号:1001-8166(2005)01-0099-07
收稿时间:2003-11-03
修稿时间:2004-05-17

ADVANCES IN CONTROLLING FACTORS OF SOIL ORGANIC CARBON
ZHOU Li.ADVANCES IN CONTROLLING FACTORS OF SOIL ORGANIC CARBON[J].Advance in Earth Sciences,2005,20(1):99-105.
Authors:ZHOU Li
Institution:1. College of Resources and Environment, China Agricultural University, Beijing 100094, China; ; 2. Laboratory of Quantitative Vegetation Ecology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; 3. Department of Biology, China West Normal University, Nanchong  Sichuan 637002, China
Abstract:Soil organic carbon (SOC) is an important component of the global carbon cycle, and it has direct effects on the global carbon balance. Better understanding of the controlling factors of SOC and how SOC may respond to environmental changes are important to the accuracy for predicting the consequences of SOC under global change and evaluating the carbon budget. In this paper, the effects of climate, atmospheric composition, vegetation, soil property, land use and management practices on soil organic carbon (SOC) are presented. Based on this, some important tasks are also proposed, including 1 quantifying processes and states of SOC; 2 determining the controlling factors; 3 the effects of nitrogen deposition on SOC; 4 the responses and feedback of SOC to climate variability; and 5the synthetic simulating SOC dynamics.
Keywords:Soil organic carbon  Global change  Influence factors  
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