干旱区生态环境知识资源中心(Arid): 干旱区沙枣-芨芨草群落土壤有机碳的空间格局

Arid

	干旱区沙枣-芨芨草群落土壤有机碳的空间格局
其他题名	Spatial distribution patterns of soil organic carbon under Elacagnus angustifolia-Achnatherum splendens community in an arid area of Northwest China
	池婷 1; 徐驰 1; 刘茂松 1; 张明娟 2; 杨雪姣 1
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2013
卷号	24 期号:10 页码:2725-2730
中文摘要	对宁夏干旱区的沙枣-芨芨草群落进行调查,分析土壤有机碳含量与地下生物量、土壤水分等因子的关系,以及土壤有机碳的积累机制.结果表明: 在沙枣-芨芨草群落中,随着土层深度的增加,土壤有机碳含量逐渐减少,且在水平和垂直方向上的变化格局较为平缓.不同区位土壤有机碳含量与其影响因子的相关性具有明显差异.0～30 cm层中,土壤有机碳含量与土壤含水量呈显著负相关;60～150 cm层中,土壤有机碳含量与根系生物量及土壤含水率呈显著正相关.经偏回归分析,0～30 cm层土壤中芨芨草根系生物量密度对土壤有机碳含量具有显著贡献;60～150 cm层中土壤有机碳格局主要受沙枣根系和土壤含水率的影响;而30～60 cm层土壤有机碳含量与根系生物量密度和土壤含水率的关系不显著.在沙枣-芨芨草群落内,不同层次、不同区位的土壤有机碳积累机制具有明显的差异.
英文摘要	An investigation was conducted to study the relationships of soil organic carbon (SOC) content with root biomass and soil moisture content as well as the accumulation mechanisms of SOC under the Elacagnus angustifolia-Achnatherum splenden community in Ningxia Hui Autonomous Region of Northwest China. The results showed that the SOC content decreased gradually with increasing soil depth, and changed gently in both horizontal and vertical directions. The correlations of the SOC content and its affecting factors varied with soil depth. In 0-30 cm layer, the SOC content was significantly negatively correlated with soil moisture content; in 60-150 cm layer, the SOC content was significantly positively correlated with soil moisture content and root biomass. Partial regression analysis indicated that the root biomass density in 0-30 cm soil layer contributed significantly to the variance of SOC content. In 60-150 cm layer, the SOC content was mainly affected by root system and soil moisture content; in 30-60 cm layer, no significant correlations were observed between the SOC content and the root biomass and soil moisture content. There was an obvious difference in the accumulation mechanism of SOC in different soil layers and at different locations of E. angustifolia-A. splendens community.
中文关键词	土壤有机碳 ; 根系生物量 ; 土壤含水率 ; 种间关系 ; 干旱区 ; 沙枣-芨芨草群落
英文关键词	soil organic carbon root biomass soil moisture content interspecific relationship arid area, Elacagnus angustifolia-Achnatherum splendens community
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4959335
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230414
作者单位	1.南京大学生命科学学院, 南京, 江苏 210093, 中国; 2.南京农业大学园艺学院, 南京, 江苏 210095, 中国
推荐引用方式 GB/T 7714	池婷,徐驰,刘茂松,等. 干旱区沙枣-芨芨草群落土壤有机碳的空间格局[J],2013,24(10):2725-2730.
APA	池婷,徐驰,刘茂松,张明娟,&杨雪姣.(2013).干旱区沙枣-芨芨草群落土壤有机碳的空间格局.应用生态学报,24(10),2725-2730.
MLA	池婷,et al."干旱区沙枣-芨芨草群落土壤有机碳的空间格局".应用生态学报 24.10(2013):2725-2730.