Diurnal variation of methane emissions from an alpine wetland on the eastern edge of Qinghai-Tibetan Plateau

2009 ◽  
Vol 164 (1-4) ◽  
pp. 21-28 ◽  
Author(s):  
Huai Chen ◽  
Ning Wu ◽  
Shouping Yao ◽  
Yongheng Gao ◽  
Yanfen Wang ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Diurnal Variation ◽  
Methane Emissions ◽  
Alpine Wetland ◽  
Eastern Edge

Trophic interactions in the Zoige Alpine wetland on the eastern edge of the Qinghai–Tibetan Plateau inferred by stable isotopes

Limnology ◽  
2018 ◽  
Vol 19 (3) ◽  
pp. 285-297 ◽  
Author(s):  
Bin Li ◽  
Fajun Chen ◽  
Dandan Xu ◽  
Zhijian Wang ◽  
Min Tao
Keyword(s):  
Stable Isotopes ◽  
Tibetan Plateau ◽  
Trophic Interactions ◽  
Alpine Wetland ◽  
Eastern Edge

Effects of Climate Variations and Human Activities on Runoff in the Zoige Alpine Wetland in the Eastern Edge of the Tibetan Plateau

2014 ◽  
Vol 19 (5) ◽  
pp. 1026-1035 ◽  
Author(s):  
Binquan Li ◽  
Zhongbo Yu ◽  
Zhongmin Liang ◽  
Kechao Song ◽  
Hongxia Li ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Human Activities ◽  
The Tibetan Plateau ◽  
Climate Variations ◽  
Alpine Wetland ◽  
Eastern Edge

scholarly journals Methane emissions from an alpine wetland on the Tibetan Plateau: Neglected but vital contribution of the nongrowing season

2015 ◽  
Vol 120 (8) ◽  
pp. 1475-1490 ◽  
Author(s):  
Weimin Song ◽  
Hao Wang ◽  
Guangshuai Wang ◽  
Litong Chen ◽  
Zhenong Jin ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Methane Emissions ◽  
The Tibetan Plateau ◽  
Alpine Wetland

scholarly journals Changes in Pan Evaporation and Their Attribution to Climate Factors in the Zoige Alpine Wetland, the Eastern Edge of the Tibetan Plateau (1969–2014)

Water ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 971 ◽  
Author(s):  
Nana Zhao ◽  
Si Gou ◽  
Beibei Zhang ◽  
Yilei Yu ◽  
Songjun Han
Keyword(s):  
Tibetan Plateau ◽  
The Tibetan Plateau ◽  
Climate Factors ◽  
Pan Evaporation ◽  
Alpine Wetland ◽  
Eastern Edge

Landslide distribution and sliding mode control along the Anninghe fault zone at the eastern edge of the Tibetan Plateau

2021 ◽  
Vol 18 (8) ◽  
pp. 2094-2107
Author(s):  
Hong-fu Zhou ◽  
Bin Liu ◽  
Fei Ye ◽  
Wen-xi Fu ◽  
Wen-qing Tang ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Sliding Mode Control ◽  
Fault Zone ◽  
Sliding Mode ◽  
The Tibetan Plateau ◽  
Mode Control ◽  
Landslide Distribution ◽  
Eastern Edge ◽  
Anninghe Fault

scholarly journals Study of the thermal regime of a reservoir on the Qinghai-Tibetan Plateau, China

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0243198
Author(s):  
Yanjing Yang ◽  
Yun Deng ◽  
Youcai Tuo ◽  
Jia Li ◽  
Tianfu He ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Diurnal Variation ◽  
Water Temperature ◽  
Water Column ◽  
Temperature Structure ◽  
Observation Data ◽  
The Mean ◽  
Low Altitude ◽  
Mean Variance ◽  
Whole Water

The Qinghai-Tibetan Plateau region has unique meteorological characteristics, with low air temperature, low air pressure, low humidity, little precipitation, and strong diurnal variation. A two-dimensional hydrodynamic CE-QUAL-W2 model was configured for the Pangduo Reservoir to better understand the thermal structure and diurnal variation inside the reservoir under the local climate and hydrological conditions on the Qinghai-Tibetan Plateau. Observation data were used to verify the model, and the results showed that the average error of the 6 profile measured monthly from August to December 2016 was 0.1°C, and the root-mean-square error (RMSE) was 0.173°C. The water temperature from August 2016 to September 2017 was simulated by inputting measured data as model inputs. The results revealed that the reservoir of the Qinghai-Tibetan Plateau was a typical dimictic reservoir and the water mixed vertically at the end of March and the end of October. During the heating period, thermal stratification occurred, with strong diurnal variation in the epilimnion. The mean variance of the diurnal water temperature was 0.10 within a 5 m water depth but 0.04 in the whole water column. The mixing mode of inflow changed from undercurrent, horizontal-invaded flow and surface layer flow in one day. In winter, the diurnal variation was weak due to the thermal protection of the ice cover, while the mean variance of diurnal water temperature was 0.00 within both 5 m and the whole water column. Compared to reservoirs in areas with low altitude but the same latitude, significant differences occurred between the temperature structure of the low-altitude reservoir and the Pangduo Reservoir (P<0.01). The Pangduo Reservoir presented a shorter stratification period and weaker stratification stability, and the annual average SI value was 26.4 kg/m2, which was only 7.5% that of the low-altitude reservoir. The seasonal changes in the net heat flux received by the surface layers determined the seasonal cycle of stratification and mixing in reservoirs. This study provided a scientific understanding of the thermal changes in stratified reservoirs under the special geographical and meteorological conditions on the Qinghai-Tibetan Plateau. Moreover, this model can serve as a reference for adaptive management of similar dimictic reservoirs in cold and high-altitude areas.

scholarly journals Seasonal variations in carbon dioxide exchange in an alpine wetland meadow on the Qinghai-Tibetan Plateau

2010 ◽  
Vol 7 (4) ◽  
pp. 1207-1221 ◽  
Author(s):  
L. Zhao ◽  
J. Li ◽  
S. Xu ◽  
H. Zhou ◽  
Y. Li ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Tibetan Plateau ◽  
Carbon Sink ◽  
Ecosystem Respiration ◽  
Gross Primary Production ◽  
Carbon Dioxide Exchange ◽  
Research Station ◽  
Rain Event ◽  
Area Index ◽  
Alpine Wetland

Abstract. Alpine wetland meadow could functions as a carbon sink due to it high soil organic content and low decomposition. However, the magnitude and dynamics of carbon stock in alpine wetland ecosystems are not well quantified. Therefore, understanding how environmental variables affect the processes that regulate carbon fluxes in alpine wetland meadow on the Qinghai-Tibetan Plateau is critical. To address this issue, Gross Primary Production (GPP), Ecosystem Respiration (Reco), and Net Ecosystem Exchange (NEE) were examined in an alpine wetland meadow using the eddy covariance method from October 2003 to December 2006 at the Haibei Research Station of the Chinese Academy of Sciences. Seasonal patterns of GPP and Reco were closely associated with leaf area index (LAI). The Reco showed a positive exponential to soil temperature and relatively low Reco occurred during the non-growing season after a rain event. This result is inconsistent with the result observed in alpine shrubland meadow. In total, annual GPP were estimated at 575.7, 682.9, and 630.97 g C m−2 in 2004, 2005, and 2006, respectively. Meanwhile, the Reco were equal to 676.8, 726.4, 808.2 g C m−2, and thus the NEE were 101.1, 44.0 and 173.2 g C m−2. These results indicated that the alpine wetland meadow was a moderately source of carbon dioxide (CO2). The observed carbon dioxide fluxes in the alpine wetland meadow were higher than other alpine meadow such as Kobresia humilis meadow and shrubland meadow.

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