Testing the transfer functions for the Geonor T-200B and Chinese standard precipitation gauge in the central Qinghai—Tibet Plateau

Zhang, Lele; Gao, Liming; Chen, Ji; Zhao, Lin; Chen, Ke-long; Zhao, Jinling; Liu, Guo-jun; Song, Ting-xi; Li, Yan-kun

doi:10.1007/s11629-021-6839-7

Cited by 7 publications

(5 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The permafrost degradation was predicted to result in ~122 Tg (1 Tg = 10 12 g; under Representative Concentration Pathway 4.5, a moderate scenario) and ~300 Tg (under Representative Concentration Pathway 8.5, a worst‐case scenario) of permafrost C release across the plateau by 2099 (Liu et al, 2022). The main vegetation types across this alpine permafrost region are alpine steppe, alpine meadow and swamp meadow, which were dominated by Stipa purpurea and Carex moorcroftii , Kobresia pygmaea and Kobresia humilis , and Kobresia tibetica , respectively (Zhang et al, 1988). The main soil types are Xerosols and Cambisols (IUSS Working Group WRB, World Reference Base for Soil Resources 2014, update, 2015).…”

Section: Methodsmentioning

confidence: 99%

Microbial nitrogen and phosphorus co‐limitation across permafrost region

Zhang

Wang

Qin

et al. 2023

Global Change Biology

View full text Add to dashboard Cite

The status of plant and microbial nutrient limitation have profound impacts on ecosystem carbon cycle in permafrost areas, which store large amounts of carbon and experience pronounced climatic warming. Despite the long‐term standing paradigm assumes that cold ecosystems primarily have nitrogen deficiency, large‐scale empirical tests of microbial nutrient limitation are lacking. Here we assessed the potential microbial nutrient limitation across the Tibetan alpine permafrost region, using the combination of enzymatic and elemental stoichiometry, genes abundance and fertilization method. In contrast with the traditional view, the four independent approaches congruently detected widespread microbial nitrogen and phosphorus co‐limitation in both the surface soil and deep permafrost deposits, with stronger limitation in the topsoil. Further analysis revealed that soil resources stoichiometry and microbial community composition were the two best predictors of the magnitude of microbial nutrient limitation. High ratio of available soil carbon to nutrient and low fungal/bacterial ratio corresponded to strong microbial nutrient limitation. These findings suggest that warming‐induced enhancement in soil nutrient availability could stimulate microbial activity, and probably amplify soil carbon losses from permafrost areas.

show abstract

Section: Methodsmentioning

confidence: 99%

Microbial nitrogen and phosphorus co‐limitation across permafrost region

Zhang

Wang

Qin

et al. 2023

Global Change Biology

View full text Add to dashboard Cite

show abstract

“…The mean annual temperature (MAT) fluctuates between −4.9 and 6.1°C and the mean annual precipitation (MAP) ranges from 84 to 593 mm across the study area. The prevailing vegetation types are alpine steppe, alpine meadow, and swamp meadow, with the predominant species being Stipa purpurea and Carex moorcroftii , Kobresia pygmaea and K. humilis , as well as K. tibetica , respectively (Zhang et al, 1988). According to the World Reference Base for Soil Resources, soil type in the region is Cambisol (IUSS Working Group WRB, 2014).…”

Section: Methodsmentioning

confidence: 99%

“…to 593 mm across the study area. The prevailing vegetation types are alpine steppe, alpine meadow, and swamp meadow, with the predominant species being Stipa purpurea and Carex moorcroftii, Kobresia pygmaea and K. humilis, as well as K. tibetica, respectively (Zhang et al, 1988). According to the World Reference Base for Soil…”

Section: Study Areamentioning

confidence: 99%

Patterns and drivers of anaerobic nitrogen transformations in sediments of thermokarst lakes

Mao

Song

Peng

et al. 2023

Global Change Biology

View full text Add to dashboard Cite

Significant attention has been given to the way in which the soil nitrogen (N) cycle responds to permafrost thaw in recent years, yet little is known about anaerobic N transformations in thermokarst lakes, which account for more than one‐third of thermokarst landforms across permafrost regions. Based on the N isotope dilution and tracing technique, combined with qPCR and high‐throughput sequencing, we presented large‐scale measurements of anaerobic N transformations of sediments across 30 thermokarst lakes over the Tibetan alpine permafrost region. Our results showed that gross N mineralization, ammonium immobilization, and dissimilatory nitrate reduction rates in thermokarst lakes were higher in the eastern part of our study area than in the west. Denitrification dominated in the dissimilatory nitrate reduction processes, being two and one orders of magnitude higher than anaerobic ammonium oxidation (anammox) and dissimilatory nitrate reduction to ammonium (DNRA), respectively. The abundances of the dissimilatory nitrate reduction genes (nirK, nirS, hzsB, and nrfA) exhibited patterns consistent with sediment N transformation rates, while α diversity did not. The inter‐lake variability in gross N mineralization and ammonium immobilization was dominantly driven by microbial biomass, while the variability in anammox and DNRA was driven by substrate supply and organic carbon content, respectively. Denitrification was jointly affected by nirS abundance and organic carbon content. Overall, the patterns and drivers of anaerobic N transformation rates detected in this study provide a new perspective on potential N release, retention, and removal upon the formation and development of thermokarst lakes.

show abstract

“…Zhang et al (2022) tested three transfer functions for daily CSPG measurements, concluding that their applicability at the Beiluhe site (located in the central QTP) was poor and recommended none. In this study, air temperature and precipitation intensity can only explain 10% of the catch ratio variation of CSPG.…”

mentioning

confidence: 99%

Precipitation adjustment by the OTT Parsivel² in the central Qinghai–Tibet Plateau

Wang,

Zhao,

et al. 2024

Earth Surf Processes Landf

Self Cite

View full text Add to dashboard Cite

Ground observation of precipitation is fundamental in preparing and evaluating various precipitation datasets, which are essential for running hydrologic and climatologic models. The undercatch of traditional precipitation gauges leads to significant uncertainty in ground observation, which is particularly severe in the central Qinghai–Tibet Plateau (QTP). To evaluate the undercatch biases, intercomparison experiments between Geonor T‐200B, the Chinese standard precipitation gauge (CSPG), and OTT Parsivel2 disdrometer were conducted at Tanggula (TGL) and Wudaoliang (WDL) sites. The adjustment schemes for 30‐min and daily precipitation were proposed and applied to 30‐min precipitation at TGL over 10 years and the monthly precipitation of the national meteorological stations on the QTP over 37 years. The results indicated that after adjustment the annual precipitation increased by 49.09% at TGL and 16.41% over the QTP. Snow took up 9.91% of the annual precipitation over the QTP, while it took up over 60% at TGL. Because of the high snow proportion, the central QTP had lower catch ratio and higher adjustment ratio than the QTP average. From 1981 to 2017, the central QTP presented a wetter trend, and the annual precipitation increased by 3.15 mm/yr, higher than the QTP average. Moreover, in the central QTP, precipitation increased more in wet than dry seasons, which were 2.45 and 0.83 mm/yr, respectively. While on the entire QTP, the dry season precipitation increased slightly more than the wet season, which were 0.67 and 0.50 mm/yr, respectively. On the QTP, adjustment amount presented an increasing trend from the northwest to the southeast, whereas annual adjustment ratio was the opposite. This study could enhance the knowledge of precipitation characteristics over the QTP, especially in the central region. More effort will be given to the calibration and uncertainty evaluation of the proposed schemes in future work.

show abstract

Testing the transfer functions for the Geonor T-200B and Chinese standard precipitation gauge in the central Qinghai—Tibet Plateau

Cited by 7 publications

References 33 publications

Microbial nitrogen and phosphorus co‐limitation across permafrost region

Microbial nitrogen and phosphorus co‐limitation across permafrost region

Patterns and drivers of anaerobic nitrogen transformations in sediments of thermokarst lakes

Precipitation adjustment by the OTT Parsivel² in the central Qinghai–Tibet Plateau

Contact Info

Product

Resources

About

Testing the transfer functions for the Geonor T-200B and Chinese standard precipitation gauge in the central Qinghai—Tibet Plateau

Cited by 7 publications

References 33 publications

Microbial nitrogen and phosphorus co‐limitation across permafrost region

Microbial nitrogen and phosphorus co‐limitation across permafrost region

Patterns and drivers of anaerobic nitrogen transformations in sediments of thermokarst lakes

Precipitation adjustment by the OTT Parsivel2 in the central Qinghai–Tibet Plateau

Contact Info

Product

Resources

About

Precipitation adjustment by the OTT Parsivel² in the central Qinghai–Tibet Plateau