干旱区生态环境知识资源中心(Arid): 西鄂尔多斯高原5种荒漠灌丛土壤碳排放特征

Arid

	西鄂尔多斯高原5种荒漠灌丛土壤碳排放特征
其他题名	Soil Carbon Emission of Five Desert Shrubberies in the West Ordos Plateau
	王珊; 党晓宏; 高永; 胡生荣; 王则宇; 潘霞
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2018
卷号	35 期号:4 页码:796-803
中文摘要	为了进一步厘定西鄂尔多斯高原地区5种天然荒漠灌丛土壤碳排放的主控因子,估算灌丛土壤碳排放量,并阐明不同灌丛土壤的碳排放特征,选用5种典型荒漠灌丛林为研究对象,通过土壤碳通量ACE( automated soil CO_2 exchange station)监测系统分别测定了5种灌丛土壤呼吸速率、土壤温湿度及碳排放量。结果表明: ① 5种灌丛土壤碳排放速率日动态总体呈现不对称钟形单峰曲线特性,峰值在11: 3013: 30。5种灌丛生长季土壤碳排放速率均显著高于非生长季,其中半日花灌丛( Helianthemum songaricum Schrenk)比其他灌丛高0.76 ~ 1.67倍。土壤年平均碳排放量沙冬青灌丛为8 090.63 kg·hm~(-2)·a~(-1)、四合木灌丛7 868.16 kg·hm~(-2)·a~(-1)、霸王灌丛7 287.40 kg·hm~(-2)·a~(-1)、半日花灌丛8 375.69 kg·hm~(-2)·a~(-1)和红砂灌丛7 618.47 kg·hm~(-2)·a~(-1) ; ②在3种未来气候情景(低排放情景B1、中等排放情景A1B和高排放情景A2)下,5种灌丛土壤碳排放量将比基准情景高达8.30%,其中霸王灌丛变化最为明显。不同类型灌丛地土壤碳排放对气温变化的响应存在差异,但差异不显著。本研究可为全球环境变化下中国西北干旱、半干旱地区碳平衡估算提供数据基础和参考依据。
英文摘要	An Automated Soil CO_2 Exchange Station was applied to study the soil CO_2 emission and the main environmental factors of five desert shrubberies so as to get a more exact estimation of soil carbon emission and a clearer understanding of its affecting factors in the west Ordos Plateau. The results showed that the curve of daily variation of soil carbon emission rate was unimodal,and the maximum rate occurred during the period from 11: 30 to 13: 30 o’clock. The monthly soil carbon emission rate of the five desert shrubberies in growing season ( from May to July) was much higher than that in non-growing season ( October) ,and that of Helianthemum songaricum shrubbery was the highest and 0.76 - 1.67 times higher than that of other shrubberies. The annual average soil carbon emission rates under the shrubberies of Ammopiptanthus mongolicus,Zygophyllum xanthoxylum,Tetraena mongolica, H. songaricum and Reaumuria songarica were 8 090.63,7 287.40,7 868.16,8 375.69 and 7 618.47 kg· hm~(-2)·a~(-1) respectively. In the three future climate scenarios ( low emission scenario B1,moderate emission scenario A1B and high emission scenario A2) ,the average soil carbon emission of five desert shrubberies would be increased by 8.30% compared with that in the baseline scenario,especially in the Z. xanthoxylum shrubbery. The response of soil carbon emission of different shrubberies to temperature change was different,but the difference was not significant. The research results could be referred in estimating carbon balance in arid and semiarid regions in the northwest China under global environmental change.
中文关键词	土壤 ; 荒漠灌丛 ; 碳排放速率 ; 气候情景 ; 西鄂尔多斯高原
英文关键词	soil desert shrubbery carbon emission rate climate scenario west Ordos Plateau
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6298439
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/2XILL650/237661
作者单位	王珊, 内蒙古农业大学沙漠治理学院;;内蒙古财经大学资源与环境经济学院, ;;, 呼和浩特;;呼和浩特, 内蒙古;;内蒙古 010018;;010010, 中国.; 党晓宏, 内蒙古农业大学沙漠治理学院, 呼和浩特, 内蒙古 010018, 中国.; 王则宇, 内蒙古农业大学沙漠治理学院, 呼和浩特, 内蒙古 010018, 中国.; 潘霞, 内蒙古农业大学沙漠治理学院, 呼和浩特, 内蒙古 010018, 中国.; 高永, 内蒙古农业大学沙漠治理学院;;中央与地方共建风沙物理重点实验室, ;;中央与地方共建风沙物理重点实验室, 呼和浩特;;呼和浩特, 内蒙古;;内蒙古 010018;;010018, 中国.; 胡生荣, 内蒙古自治区环境工程评估中心, 呼和浩特, 内蒙古 010011, 中国.
推荐引用方式 GB/T 7714	王珊,党晓宏,高永,等. 西鄂尔多斯高原5种荒漠灌丛土壤碳排放特征[J]. 内蒙古农业大学,2018,35(4):796-803.
APA	王珊,党晓宏,高永,胡生荣,王则宇,&潘霞.(2018).西鄂尔多斯高原5种荒漠灌丛土壤碳排放特征.干旱区研究,35(4),796-803.
MLA	王珊,et al."西鄂尔多斯高原5种荒漠灌丛土壤碳排放特征".干旱区研究 35.4(2018):796-803.