干旱区生态环境知识资源中心(Arid): 湖泊沉积有机碳埋藏效率及其影响要素研究进展

Arid

	湖泊沉积有机碳埋藏效率及其影响要素研究进展
其他题名	Progress of research on the burial efficiency of organic carbon and its influencing factors in lacustrine sediments
	郝盛吞; 周爱锋; 张晓楠; 吴铎; 尹丽颖
来源期刊	地球环境学报
ISSN	1674-9901
出版年	2017
卷号	8 期号:4 页码:292-306
中文摘要	湖泊是地球上重要的碳库之一,湖泊有机碳埋藏效率决定湖泊碳源-汇的转换关系,因而在湖泊碳及全球碳循环中的作用越来越受到人们的重视。本文综述了物理、化学、生物及人类活动对湖泊碳埋藏效率的影响,并探讨了湖泊碳储量和碳循环对湖泊碳埋藏效率变化的响应。目前湖泊有机碳埋藏效率的研究还存在区域研究有限、影响因子少等问题,缺乏系统性,多限于观测,对机制机理的理解比较薄弱。今后的研究可以从以下几个方面加强:(1)不同区域不同环境条件下碳埋藏效率的差异性研究; (2)在全球气候变暖大背景下,探讨碳埋藏效率对增温的响应及碳埋藏效率发生变化后如何反馈于气候变化;(3)定量分析碳埋藏效率的整个地球、物理、化学和生物过程,建立相关的模型。
英文摘要	Background, aim,and scope Lake ecosystem is one of the most significant carbon pools on the earth. In recent years, burial carbon efficiency of lakes plays a key role in global carbon cycle, which has been paid more and more attention. In this paper, we summarized the physical, chemical, biological, and anthropogenic factors that affect buried carbon efficiency of lakes. Accordingly, we explored carbon stock and carbon cycle of lakes in response to the burial efficiency of organic carbon. Materials and methods A comparative study of the carbon burial efficiency in lacustrine sediments from different regions of the world has been conducted in the collection, screening and sorting of published literatures, covering a number of research cases and obtaining the conclusions of series. Results The results show that the impact on organic carbon burial efficiency mainly includes the following aspects. The effect of atmospheric temperature on lake organic carbon burial efficiency varies with time and place. It is now widely accepted that as the temperature of the atmosphere increases, the decomposition rate of organic carbon is accelerated and the release of CO_2 from the lake to the atmosphere increases. However, There are regional differences that the regularity of the organic carbon mineralization rate increases with increasing temperature. The variation of precipitation variability and intensity, the climate areas such as humid areas and arid and semi-arid areas have noticeable effects on the organic carbon storage of lacustrine sediments. As the variability and intensity of precipitation increase, organic carbon dissolved from land to aquatic ecosystems will increase. Compared with lakes in wet areas of eastern China, especially shallow lakes, the amount of organic carbon in lakes is much larger in arid and semiarid regions. The physical and chemical factors influencing the organic carbon burial efficiency of lakes mainly include lake water type, organic carbon source and content, oxygen penetration depth, dissolved oxygen concentration in bottom water, oxygen exposure time and lake nutrient status. The carbon burial efficiency of lacustrine is affected by the organic carbon source. In many lakes, the respiration from the input of dissolved organic carbon (DOC) is stronger than that from the buried organic carbon in the lake. Relatively short oxygen exposure times and high levels of terrestrial organic matter contribute to organic carbon burial, while relatively long oxygen exposure times and low levels of endogenous organic matter accelerate mineralization of organic matter and thus hinder organic carbon burial.
中文关键词	碳埋藏效率 ; 碳循环 ; 有机地球化学 ; 气候变暖 ; 碳库
英文关键词	carbon burial efficiency carbon cycle organic geochemistry global warming carbon pool
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:6066818
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235781
作者单位	兰州大学资源环境学院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	郝盛吞,周爱锋,张晓楠,等. 湖泊沉积有机碳埋藏效率及其影响要素研究进展[J]. 兰州大学,2017,8(4):292-306.
APA	郝盛吞,周爱锋,张晓楠,吴铎,&尹丽颖.(2017).湖泊沉积有机碳埋藏效率及其影响要素研究进展.地球环境学报,8(4),292-306.
MLA	郝盛吞,et al."湖泊沉积有机碳埋藏效率及其影响要素研究进展".地球环境学报 8.4(2017):292-306.