Seasonal variations of major ions in fresh snow at Baishui Glacier No. 1, Yulong Mountain, China

Zhu, Guofeng; Pu, Tao; He, Yuanqing; Shi, Peiji; Zuyi, Tao

doi:10.1007/s12665-012-1928-0

Cited by 25 publications

(10 citation statements)

References 24 publications

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“…It is unexpected because climate conditions The predominant determinant of diatom community structure in lakes of the first type is the presence of glaciers. Glacial meltwater results in strong seasonal fluctuations of flow and temperature that affect turbidity (light) and water chemistry (Milner and Petts 1994;Zhu et al 2013;Meng and Liu 2013). Ii is well known that changes in water quality (e.g.…”

Section: Discussionmentioning

confidence: 99%

Impact of glacier changes on ecosystem of proglacial lakes in high mountain regions of East Siberia (Russia)

et al. 2015

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Mountain lakes in East Siberia have been studied for recent changes in water chemistry, turbidity and diatom assemblages preserved in bottom sediments. We performed a regional analysis of the relative effect of climate and glacier changes on change in diatom diversity and supply of meltware in proglacial lakes. We analysed sediment records from East Siberian glacier lakes using geochemical and diatoms proxies. We found that dramatic changes in communities and abundance of diatoms and biogenic proxy could be induced by low nutrient concentrations in glacial lakes and high turbidity due to active degradation of glaciers and snow patches as a result of the global increase in temperature in the Northern Hemisphere. Our evidences show that diatoms have been gradually decreased since ca. the 1880s. A significant tendency towards diatom reducing occurred at high summer regional temperatures. This tendency may be attributed to the fact that glaciers and snow patches thawed actively in East Siberia during ca. 1880-1958, which was induced by the beginning of the Recent Warming (ca. 1850-1860) and a long period of relatively warm regional climate from ca. 1900 to 1960.

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Section: Discussionmentioning

confidence: 99%

Impact of glacier changes on ecosystem of proglacial lakes in high mountain regions of East Siberia (Russia)

et al. 2015

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“…Among these four ions, K ? mostly came from bedrock and agricultural activities in the south and East Asia monsoon region (Zhu et al 2012). The Na ?…”

Section: Discussionmentioning

confidence: 99%

“…, accounting for 32.5 % of the total variance contribution, were mainly from the limestone in Yulong Mountain area. The third principal component was greatly influenced by NO 3 -, NO 3 -mainly from industrial and human activities nearby in the South and East Asia monsoon channel (Zhu et al 2012). In addition, lightning in the high altitude area also can produce some NO 3 - ); these three principal components accounted for 92.12 % of the total variance contribution, which was enough to explain the ion source of the melt water in Baishui Glacier No.…”

Section: Discussionmentioning

confidence: 99%

“…The characteristics of pH, EC and inorganic ions in melting water, precipitation, runoff and groundwater are practical reflecting regional natural and anthropogenic environment (Jenkins and James 1987;Berner and Berner 1987;Wake et al 1990;Stravisi et al 1998;Ju et al 2008;Zhu et al 2012;Pu et al 2013). Baishui river basin represents a relatively small basin (29.4 km 2 ) dominated by karst geology with temperate glaciers in SW China .…”

Section: Introductionmentioning

confidence: 99%

“…1, Yulong Mountain have been studied. Studies have shown that the ocean-glacier area had relatively strong ion leaching, which is not an ideal proxy climate change indicator (Pang et al 2006(Pang et al , 2007Zhu et al 2012Zhu et al , 2013. Previous studies have also provided a general view of the hydrochemical characteristics of typical rivers in Lijiang basin during the wet season in mountains region.…”

Section: Introductionmentioning

confidence: 99%

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Variations of chemical features in a monsoon glacier watershed, southeastern Tibet Plateau

Zhu

Liu

et al. 2015

Environ Earth Sci

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The pH, EC (electric conductivity), d 18 O and major ions in melt water, precipitation, runoff and groundwater samples which were collected in Baishui basin were analyzed. Based on chemical analysis, the characteristic variations are analyzed in this paper. The melt water, precipitation, runoff and groundwater were Ca 2? /Mg 2? /HCO 3-type with similar ion compositions but showed different ion concentrations. Normally the content is high in groundwater and runoff water but low in melt water and precipitation. From the upper basin glacier downward, there was a general increasing trend for the total ion concentrations in basin. HCO 3 -and Ca 2? accounted for more than 80 % of total ions in samples, indicating that ions mainly came from limestone and water typical of carbonate solution water. Water-rock interaction is the significant contributor to water geochemistry. The concentration of inorganic ion in melt water had an obvious diurnal variation with temperature change. The d 18 O values increases with the altitude decrease; the similarity of d 18 O in runoff and groundwater samples was due to their frequent transformation in karst regions.

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Effects of Re-vegetation on Herbaceous Species Composition and Biological Soil Crusts Development in a Coal Mine Dumping Site

Zhao

Zhang

et al. 2015

Environmental Management

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Despite the critical roles of plant species' diversity and biological soil crusts (BSCs) in arid and semi-arid ecosystems, the restoration of the diversity of herbaceous species and BSCs are rarely discussed during the process of vegetation restoration of anthropogenically damaged areas in these regions. In this study, the herbaceous plant species composition, along with the BSCs coverage and thicknesses, was investigated at six different re-vegetation type sites, and the natural vegetation site of the Heidaigou open pit coal mine in China's Inner Mongolia Autonomous Region was used as a reference. The highest total species richness (16), as well as the species richness (4.4), occurred in the Tree and Herbaceous vegetation type site. The species composition similarities between the restored sites and the reference site were shown to be very low, and ranged from 0.09 to 0.42. Also, among the restored sites, the similarities of the species were fairly high and similar, and ranged from 0.45 to 0.93. The density and height of the re-vegetated woody plants were significantly correlated with the indexes of the diversity of the species. The Shrub vegetation type site showed the greatest total coverage (80%) of BSCs and algae crust coverage (48%). The Shrub and Herbaceous type had the greatest thicknesses of BSCs, with as much as 3.06 mm observed, which was followed by 2.64 mm for the Shrub type. There was a significant correlation observed between the coverage of the total BSCs, and the total vegetation and herbaceous vegetation coverage, as well as between the algae crust coverage and the herbaceous vegetation coverage. It has been suggested that the re-vegetated dwarf woody plant species (such as shrubs and semi-shrubs) should be chosen for the optimal methods of the restoration of herbaceous species diversity at dumping sites, and these should be planted with low density. Furthermore, the effects of vegetation coverage on the colonization and development the BSCs should be considered in order to reconstruct the vegetation in disturbed environments, such as mine dumpsites in arid areas.

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Seasonal variations of major ions in fresh snow at Baishui Glacier No. 1, Yulong Mountain, China

Cited by 25 publications

References 24 publications

Impact of glacier changes on ecosystem of proglacial lakes in high mountain regions of East Siberia (Russia)

Impact of glacier changes on ecosystem of proglacial lakes in high mountain regions of East Siberia (Russia)

Variations of chemical features in a monsoon glacier watershed, southeastern Tibet Plateau

Effects of Re-vegetation on Herbaceous Species Composition and Biological Soil Crusts Development in a Coal Mine Dumping Site

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