干旱区生态环境知识资源中心(Arid): 北方干旱区湖泊湿地沉积物有机碳分布及碳储量特征研究--以乌梁素海为例

Arid

	北方干旱区湖泊湿地沉积物有机碳分布及碳储量特征研究--以乌梁素海为例
其他题名	Spatial distribution and storage characteristic of organic carbon in sediments of lake wetland in northern arid areas: a case study of Wuliangsuhai Lake
	刘旭; 李畅游; 贾克力; 张生; 史小红
来源期刊	生态环境学报
ISSN	1674-5906
出版年	2013
卷号	22 期号:2 页码:319-324
中文摘要	对乌梁素海沉积物现场采样和室内实验分析,研究了乌梁素海表层沉积物30 cm中有机碳空间分布以及碳储量特征,分析了有机碳来源以及总氮、总磷、水生植物、沉积物质地对湖泊沉积物碳固定的影响。结果发现,全湖有机碳密度空间分布明显,总体呈现湖区北部高于南部,在湖心处其密度最高。在垂直剖面上,有机碳含量随着深度递减,表层大于底层。沉积物中C/N比率在9~36之间,平均值为20.2。有机碳有内源和外源,其中外源为主导。乌梁素海沉积物有机碳沉积速率为169.55 g·m~(-2)·a~(-1),有机碳密度为5.21 kg·m~(-2),30 cm深度沉积物中,碳储量为134.39*10~4 t。乌梁素海沉积物固碳能力与总氮存在明显的正相关性,而与总磷没有相关性,说明总氮与有机碳具有同源性,总氮主要以有机氮形态存在。有机碳含量主要吸附在沉积物粘粒中,其中全湖<63 mum和63~125 mum颗粒中的有机碳含量占总粒径有机碳量的51%和22%。乌梁素海水生植物以芦苇为主,其面积占湖区近1/2,随着近30年来了芦苇面积的增加,促进了沉积物固碳能力。
英文摘要	Based on the on-site sampling and laboratory experiments in Wuliangsuhai Lake, this paper studies the characteristics of the TOC distribution in the 30 cm sediment of and carbon sequestration and the relationship with TN, TP, aquatic plants and sediment texture, as well as the sources of organic carbon. The results showed that the SOC distribution has a certain regularity, in the north Lake is higher than the south, enriched in the middle of lake. On the vertical profile, TOC are decreasing with increasing depth of sediment in the vertical direction. TOC/TN ratios of surface sediments change from 9 to 36, average is 20.2. It related that the source of TOC is mainly to endogenous and exogenous, the exogenous is dominant. Organic carbon deposition rate in the sediment of Wuliangsuhai Lake is 169.55 g·m~(-2)·a~(-1). Organic carbon density is 5.21 kg·m~(-2), and carbon stored in 30 cm depth of the sediments, is 134.39*10~4 t. There are significant positive correlation between TOC and TN, which related that TOC and TN have same source, total nitrogen exist mainly in organic nitrogen forms. TOC content is mainly absorbed in cosmid. The 51% and 22% of TOC content is in the <63 mum and 63~125 mum cosmids respectively. In the Wuliangsuhai Lake, reeds is the mainly aquatic plants, which measure of area is achieve half of the whole lake area. With increasing of reed area in nearly 30 years, it promoted the sediment carbon sequestration capacity.
中文关键词	湖泊 ; 湿地 ; 干旱区 ; 有机碳 ; 碳储量 ; 沉积物 ; 乌梁素海
英文关键词	lake wetland arid areas TOC carbon storage sediment Wuliangsuhai Lake
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4796930
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229954
作者单位	内蒙古农业大学, 呼和浩特, 内蒙古 010018, 中国
推荐引用方式 GB/T 7714	刘旭,李畅游,贾克力,等. 北方干旱区湖泊湿地沉积物有机碳分布及碳储量特征研究--以乌梁素海为例[J]. 内蒙古农业大学,2013,22(2):319-324.
APA	刘旭,李畅游,贾克力,张生,&史小红.(2013).北方干旱区湖泊湿地沉积物有机碳分布及碳储量特征研究--以乌梁素海为例.生态环境学报,22(2),319-324.
MLA	刘旭,et al."北方干旱区湖泊湿地沉积物有机碳分布及碳储量特征研究--以乌梁素海为例".生态环境学报 22.2(2013):319-324.