Analysis of the environmental sensitivities of a typical dynamic;epikarst system at the Nongla monitoring site, Guangxi, China

doi:10.1007/s00254-004-1186-x

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	Analysis of the environmental sensitivities of a typical dynamic;epikarst system at the Nongla monitoring site, Guangxi, China
	Cheng, Z; Yuan, DX; Cao, JH
刊名	ENVIRONMENTAL GEOLOGY
	2005
卷号	47 期号:5 页码:615-619
关键词	epikarst system physico-chemistry precipitation effects sensitivity Nongla Village Guangxi China
ISSN号	0943-0105
DOI	10.1007/s00254-004-1186-x
英文摘要	Nongla, a typical karst dynamic system (KDS) monitoring site, is located at Nongla Village, Mashan County, Guangxi, China. The data from a Greenspan CTDP300 multichannel data logger indicates that the KDS is highly sensitive to environmental changes. Multi-day and diurnal physicochemical composition of epikarst spring water is quite different under different climatic conditions. During a day with no rainfall, water temperature and air temperature have similar variations. Electrical conductivity (EC) has good positive correlation with pH value and water temperature. During rainstorms, the physico-chemical composition of the spring water is initially strongly effected by dilution, pH and EC drop rapidly. However, half to one hour later, EC returns to normal and the CO2 effects will be the dominant physical effect. This is due to the high fissure rates and high permeability in the epikarst zone. Dilution effects were observed during the entire rainstorm event, whereas, it only acts during the earliest period of light rain. Therefore, it is necessary to examine the water-rock-CO2 combination as a whole system to explain the hydrochemical behavior of epikarst processes.
学科主题	岩溶地质
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000227561000002
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/37874]
专题	中国地质科学院岩溶地质研究所
作者单位	Chinese Acad Geol Sci, Minist Land & Resources, Karst Dynam Lab, Inst Karst Geol, Guilin 541004, Peoples R China.
推荐引用方式 GB/T 7714	Cheng, Z,Yuan, DX,Cao, JH. Analysis of the environmental sensitivities of a typical dynamic;epikarst system at the Nongla monitoring site, Guangxi, China[J]. ENVIRONMENTAL GEOLOGY,2005,47(5):615-619.
APA	Cheng, Z,Yuan, DX,&Cao, JH.(2005).Analysis of the environmental sensitivities of a typical dynamic;epikarst system at the Nongla monitoring site, Guangxi, China.ENVIRONMENTAL GEOLOGY,47(5),615-619.
MLA	Cheng, Z,et al."Analysis of the environmental sensitivities of a typical dynamic;epikarst system at the Nongla monitoring site, Guangxi, China".ENVIRONMENTAL GEOLOGY 47.5(2005):615-619.