Seasonal variations of pH and electrical conductivity in a snow-firn pack on Glacier No. 1, eastern Tianshan, China

Li, Xiangying; Li, Zhongqin; Ding, Yongjian; Liu, Shiyin; Zhao, Zhenyu; Liu, Luo; Pang, Hongxi; Li, Chuanjin; Li, Huilin; You, Xue-yi; Wang, Feiteng

doi:10.1016/j.coldregions.2006.09.006

Cited by 29 publications

(36 citation statements)

References 20 publications

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“…Two apparent high peaks (Figure 3a (Figure 3) from 19 March to 17 April. This was mainly related to small precipitation events, low temperatures (always below zero), and weak evaporation during this period, which enabled post-depositional processes such as sublimation and dry deposition to become more dominant [40,41]. Especially, little melt occurred under the condition, which partially contributed to high values of Ca 2+ and other major ions in the surface of the snowpit.…”

Section: Elution Processmentioning

confidence: 99%

Seasonal Variability and Evolution of Glaciochemistry at An Alpine Temperate Glacier on the Southeastern Tibetan Plateau

Wang

Shi

Cao

et al. 2018

Water

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Temperate glaciers are highly sensitive to climatic and environmental changes. Studying the chemical composition of snow, firn, and ice on temperate glaciers is important for understanding the variations in atmospheric circulation patterns, deposition conditions, and melting processes. To define snowpack chemistry and environmental significance, seven snowpacks (one snowpack in late autumn, two in winter, two in spring, and two in summer) were sampled in 2008/2009 on Baishui Glacier No. 1 in Mt. Yulong. Soluble ions in the winter snowpacks showed low values in the middle part but high values in the lower and upper parts, influenced by the atmospheric deposition of snow accumulation. The larger variations of ionic concentrations in the spring snowpacks were associated with the variable atmospheric patterns with high dust content in spring, leading to high ionic concentrations in the upper snowpack. Strong meltwater percolation resulted in quick migration and redistribution of ions for the profiles during the monsoon period. The ion elution sequence was Ca 2+ > SO 4 2− > NH 4 + > K + > NO 3 − > Na + > Cl − > Mg 2+ . Factor analysis showed that NO 3 − , SO 4 2− , NH 4 + were mainly supplied by wet deposition-plus-anthropogenic input, while Cl − and Na + originated from marine sources. Ca 2+ and Mg 2+ had multiple sources and the local terrestrial source was important because of locally exposed carbonate. The results suggest that chemical concentrations reflect mainly impurities supplied by atmospheric circulation and precipitation during periods of snow accumulation, as well as during the melting process.

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Section: Elution Processmentioning

confidence: 99%

Seasonal Variability and Evolution of Glaciochemistry at An Alpine Temperate Glacier on the Southeastern Tibetan Plateau

Wang

Shi

Cao

et al. 2018

Water

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“…Climatically, the area is dominated by the westerly circulation and the Siberian High [24]. It has a typical continental climate with a westerly jet prevailing across the high mountains, and the local valley winds prevail from March to September from the northeast and east-northeast flow [25,26]. Aizen et al [3] found that the isotopic component in precipitation of Central Tianshan is related to differing moisture contributions from either easterly or southerly (southwest monsoon) air mass trajectories.…”

Section: Study Area and Datamentioning

confidence: 99%

The Mass Balance of Glacier No. 1 at the Headwaters of the Urumqi River in Relation to Northern Hemisphere Teleconnection Patterns

Yuan

Hao

Berndtsson

et al. 2016

Water

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Most small glaciers in the world have significantly decreased their volume during the last century, which has caused water shortage problems. Glacier No. 1, at the headwaters of the Urumqi River, Tianshan, China, has been monitored since 1959 and similarly has experienced significant mass and volume losses over the last few decades. Thus, we examined the trend and potential abrupt changes of the mass balance of Glacier No. 1. Principal component analysis and singular value decomposition were used to find significant relations between the mass balance of Glacier No. 1 and Northern Hemisphere teleconnection patterns using climate indices. It was found that the mass balance of Glacier No. 1 had a significantly decreasing trend corresponding to´14.5 mm/year from 1959 to 2010. A change point was detected in 1997 with 99% confidence level. Two time periods with different mass balances were identified as 1959-1996 and 1997-2010. The mass balance for the first period was´136.4 mm/year and up to´663.9 mm/year for the second period. The mass balance of Glacier No. 1 is positively related to the Scandinavian Pattern (SCA), and negatively related to the East Atlantic Pattern (EA). These relationships are useful in better understanding the interaction between glacier mass balance and climate variability.

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“…Some studies have reported that changes on soil salinity and acidity during afforestation may cause sapling mortality (Ferreras et al, 2006;Guang-Ming et al, 2006). According to other authors, there is not a direct relationship between the amendment addition and the increment in soil salinity or acidity (Ferreras et al, 2006) and these changes depend on the type and application rate of amendment as well as the climatic conditions (Li et al, 2007;Hueso-González et al, 2014). In our study, amendments were applied mixed with soil at the rate of 10 Mg ha −1 and no significant differences were found compared to the control plots (Table 2).…”

Section: Changes In Soil Ph and Ecmentioning

confidence: 89%

“…We only detected significant differences in the RU treatment 30 months after the afforestation (Table 2; P > 0.005). However, based on previous studies, the measured changes were not sufficient to cause the mortality of the afforested plants (Ferreras et al, 2006;Guang-Ming et al, 2006;Li et al, 2007). In summary, a positive effect on afforestation performance, e.g., plant growth and survival, was evidenced when the soil was amended with SM, PM, and HP, and no benefits were noted with SH and RU additions (Table 1 and Figs.…”

Section: Changes In Soil Ph and Ecmentioning

confidence: 90%

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Effects of topsoil treatments on afforestation in a dry Mediterranean climate (southern Spain)

González¹,

Murillo²,

Ruíz-Sinoga³

2016

Solid Earth

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Abstract. Afforestation programs in semiarid areas are associated with a high level of sapling mortality. Therefore, the development of alternative low-cost and low-environmentalimpact afforestation methods that ensure the survival of seedlings is crucial for improving the efficiency of Mediterranean forest management. This study assessed the effects of five types of soil amendments on the afforestation success (e.g., plant growth and survival) of a Mediterranean semiarid area. The amendments tested were (i) straw mulch; (ii) mulch containing chipped branches of Aleppo pine (Pinus halepensis L.); (iii) sheep manure compost; (iv) sewage sludge from a wastewater treatment plant; and (v) TerraCottem hydroabsorbent polymer. We hypothesized that in the context of dry Mediterranean climatic conditions, the use of organic amendments would enhance plant establishment and ensure successful afforestation. The results showed that afforestation success varied among the various soil amendment treatments in the experimental plots. The amendments had no effect on soil organic carbon, pH, or salinity, but the results indicated that the addition of mulch or hydroabsorbent polymer can reduce transplant stress by increasing the soil water available for plant growth throughout the hydrological year, and potentially improve the success of afforestation by reducing plant mortality.

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Seasonal variations of pH and electrical conductivity in a snow-firn pack on Glacier No. 1, eastern Tianshan, China

Cited by 29 publications

References 20 publications

Seasonal Variability and Evolution of Glaciochemistry at An Alpine Temperate Glacier on the Southeastern Tibetan Plateau

Seasonal Variability and Evolution of Glaciochemistry at An Alpine Temperate Glacier on the Southeastern Tibetan Plateau

The Mass Balance of Glacier No. 1 at the Headwaters of the Urumqi River in Relation to Northern Hemisphere Teleconnection Patterns

Effects of topsoil treatments on afforestation in a dry Mediterranean climate (southern Spain)

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