干旱区生态环境知识资源中心(Arid): 不同岩溶环境条件下岩溶地下水中delta~(13)C

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	不同岩溶环境条件下岩溶地下水中delta~(13)C_(DIC)特征
其他题名	The delta~(13)C_(DIC) Characteristics of Groundwater in Different Karst Environmental Conditions
	黄奇波; 覃小群; 唐萍萍; 刘朋雨
来源期刊	地球与环境
ISSN	1672-9250
出版年	2012
卷号	40 期号:4 页码:505-511
中文摘要	岩溶地下水的delta~(13)C_(DIC)值主要是受土壤碳库和碳酸盐岩碳库的delta~(13)C所制约。本研究选取两个气候条件完全不同的南方广西桂林、北方山西汾阳为对比研究对象,通过取样测试分析两个地区岩溶地下水的delta~(13)C_(DIC)值,发现北方汾阳岩溶地下水的delta~(13)C_(DIC)范围为一7.53%。~一12.25%。,平均为一9.84%。;南方桂林岩溶泉水的delta~(13)C_(DIC)范围为一9.22%。~一15.99%。,平均为一-13.06;北方岩溶水比南方偏重3.22。结合两个地区所处的气候环境条件分析,北方暖温带干旱半干旱大陆性季风区,C_4植被发育,C_3/C_4。比例低,土壤碳库的delta~(13)C重;南方亚热带湿润季风区C_3植被发育,C_3/C_4比例高,土壤碳库的铲delta~(13)C轻。因此气候条件不同引起生态条件约差异而造成南北方地下水delta~(13)C_(DIC)的不同。这为利用同位素方法研究地下水对气候条件变化的响应提供了理论依据。
英文摘要	The delta~(13)C_(DIC) values of karst groundwater are mainly constrained by the soil carbon pool and its delta~(13)C.We selected two regions which are completely different in climatic conditions, Guilin of Guangxi in southern China and Fenyang of Shanxi Province in northern China, as the contrast objects for our study. Through analyzing the delta~(13)C_(DIC) values of kart groundwater in the two regions, it was found that:(a) the delta~(13)C_(DIC) values of karst groundwater are within the range of -7.53 12.25,with mean value of一9.84 in Fenyang, and those of karst spring are within the range of -9.22%~-15.99%。,with a mean value of -13.06 in Guilin; (b) the karst groundwater in northern China is 3.22%times heavier than that in southern China. Combining the climatic and environmental conditions in the two regions, we revealed that the northern warm temperate arid and semi-arid continental monsoonal climate is characterized by more development of C_4 vegetation, lower C_3/C_4 ratios and heavier delta~(13)C of soil organic carbon pool. On the contrary, the southern subtropical humid monsoon region is characterized by less development of C_4 vegetation, higher C_3/C_4 ratios and light delta~(13)C of soil.organic carbon pool. Therefore, different ecological conditions caused by the climate are the reason which caused different delta_(13)C_(DIC) values of water between southern China and northern China. The study provides a theoretical basis for our study on the response of groundwater to climate changing with isotope methods.
中文关键词	岩溶地下水 ; 广西桂林 ; 山西汾阳
英文关键词	delta~(13)CDlC karst groundwater delta~(13) CDIC Guilin of Guangxi Fen yang of Shanxi
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:4728790
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227905
作者单位	中国地质科学院岩溶地质研究所, 国土资源部/广西壮族自治区岩溶动力学重点实验室, 桂林, 广西 541004, 中国
推荐引用方式 GB/T 7714	黄奇波,覃小群,唐萍萍,等. 不同岩溶环境条件下岩溶地下水中delta~(13)C_(DIC)特征[J],2012,40(4):505-511.
APA	黄奇波,覃小群,唐萍萍,&刘朋雨.(2012).不同岩溶环境条件下岩溶地下水中delta~(13)C_(DIC)特征.地球与环境,40(4),505-511.
MLA	黄奇波,et al."不同岩溶环境条件下岩溶地下水中delta~(13)C_(DIC)特征".地球与环境 40.4(2012):505-511.