Spatial-temporal variations of travertine deposition rates and their controlling factors in Huanglong Ravine, China - A world's heritage site

	Spatial-temporal variations of travertine deposition rates and their controlling factors in Huanglong Ravine, China - A world's heritage site
	Jinliu Zhang; Haijing Wang; Zaihua Liu; Dejun An; Wolfgang Dreybrodt
	2012
发表期刊	Applied Geochemistry
卷号	27 期号:1 页码:211-222
摘要	Huanglong, well known for its unique natural travertine landscape, was listed by UNESCO as an entry in the World's Nature Heritage in 1992, and attracts more than one million of tourists from all over the world each year. However, the landscape has undergone significant degradation ( notably, serious decay of travertine) during the past two decades as the tourist numbers have increased remarkably. To understand the variations of travertine deposition rates and their controlling factors, especially the impact of tourism activities, paired water and modern travertine samples deposited on plexiglass substrates were taken along the Huanglong stream at regular intervals from early May to early November in 2010 (i.e., in the wet season). The travertine deposition rates have declined significantly compared to those in early 90s in all four subsystems in the Huanglong Ravine. The largest decrease (89.5%) occurred at the lowest sampling site. The reduction in travertine deposition most likely resulted from the phosphate pollution caused by the tourism activities. In spite of an increase in concentrations of Ca, calcite saturation, and water temperature, which facilitate calcite precipitation, deposition rates decreased because of inhibition by PO(4)(3-) ions. Seasonally, three control patterns of travertine deposition rates were distinguished along the Ravine. They are control by water-temperature, control by dilution of rainwater and snow-melting water and control by PO(4)- inhibition of calcite precipitation.
学科领域	环境地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/4880
专题	环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
推荐引用方式 GB/T 7714	Jinliu Zhang,Haijing Wang,Zaihua Liu,et al. Spatial-temporal variations of travertine deposition rates and their controlling factors in Huanglong Ravine, China - A world's heritage site[J]. Applied Geochemistry,2012,27(1):211-222.
APA	Jinliu Zhang,Haijing Wang,Zaihua Liu,Dejun An,&Wolfgang Dreybrodt.(2012).Spatial-temporal variations of travertine deposition rates and their controlling factors in Huanglong Ravine, China - A world's heritage site.Applied Geochemistry,27(1),211-222.
MLA	Jinliu Zhang,et al."Spatial-temporal variations of travertine deposition rates and their controlling factors in Huanglong Ravine, China - A world's heritage site".Applied Geochemistry 27.1(2012):211-222.

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