The increasing distribution area of zokor mounds weaken greenhouse gas uptakes by alpine meadows in the Qinghai–Tibetan Plateau

Zhang, Wei; Liu, Chunyan; Zheng, Xunhua; Fu, Yuanhai; Hu, Xiaoxia; Cao, Guangmin; Butterbach‐Bahl, Klaus

doi:10.1016/j.soilbio.2014.01.005

Cited by 51 publications

(31 citation statements)

References 27 publications

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“…The Qinghai-Tibetan Plateau (QTP), designated as the "the third pole" of the earth, occupies approximately 25% of the total Chinese territory and has a typical plateau continental climate (Zhang et al, 2014;Zhong et al, 2014). Because of the high fragility to environmental disturbances and the vast expanse of the QTP, the alpine grasslands in the QTP are not only regarded as a very sensitive climate change trigger in the Asian monsoon region, but also have pronounced feedbacks to climate change and human activities (Hafner et al, 2012;W.…”

Section: Introductionmentioning

confidence: 99%

“…Because of the high fragility to environmental disturbances and the vast expanse of the QTP, the alpine grasslands in the QTP are not only regarded as a very sensitive climate change trigger in the Asian monsoon region, but also have pronounced feedbacks to climate change and human activities (Hafner et al, 2012;W. Zhang et al, 2014;L.…”

Section: Introductionmentioning

confidence: 99%

“…Although land use type is an important factor affecting GHG emissions, the mechanisms involved in potential GHG emissions in different land use types are poorly understood (Lang et al, 2011). Most studies in global change biology have only focused on summer (from July to September), the peak-growing season of the plants in QTP (Lin et al, 2009;Jiang et al, 2010;W. Zhang et al, 2014;L.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Seasonal changes of CO2, CH4 and N2O fluxes in different types of alpine grassland in the Qinghai-Tibetan Plateau of China

Dong

Zhou

et al. 2015

Soil Biology and Biochemistry

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111

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Seasonal changes of CO2, CH4 and N2O fluxes in different types of alpine grassland in the Qinghai-Tibetan Plateau of China

Dong

Zhou

et al. 2015

Soil Biology and Biochemistry

Self Cite

111

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“…The dominant ecosystem on the Tibetan Plateau is alpine meadow [4]. This unique ecosystem is characterized by a long, cold dormancy period and short, mild growing season [4]. Consequently, N 2 O emissions are estimated inaccurately under these arid and polar climatic conditions [5].…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, N 2 O emissions are estimated inaccurately under these arid and polar climatic conditions [5]. Massive efforts have been carried out to assess N 2 O emissions in agricultural management systems, but few studies have focused on alpine meadows [2][3][4][5]. There are inconsistent views about the variations in N 2 O emissions at diverse time scales (monthly, yearly, and between growing season and non-growing season).…”

Section: Introductionmentioning

confidence: 99%

Nitrous Oxide Emission Rates over 10 Years in an Alpine Meadow on the Tibetan Plateau

Cao¹,

Ke²,

Guo³

et al. 2018

Pol. J. Environ. Stud.

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The alpine grassland ecosystem covering about 85% of the Tibetan plateau is fragile and sensitive to natural and anthropogenic disturbances. However, it is unclear how nitrous oxide (N 2 O) has varied over the last 10 years. In order to accurately estimate the regional N 2 O emissions budget, the N 2 O levels, environmental factors, and biomass were investigated on a yearly, monthly, and seasonal basis from 2000 to 2014 in an alpine meadow. The results showed that there was an overall declining trend in emissions over 10 years, during which the two maximum emission rates were 64.8±11.1 and 41.8±18.2 µg m -2 h -1 (in 2001 and 2006). The average N 2 O emissions rate was about 38.4±3.3 µg m -2 h -1 . Pearson correlation demonstrated that soil and air temperature exerted a crucial influence on N 2 O, followed by precipitation and aboveground biomass, but the effect of soil moisture at a depth of 10 cm was negative. Multiple linear regressions showed a good relationship between N 2 O and all environmental factors. Future scenarios of wetter and warmer weather would noticeably increase alpine meadow N 2 O emissions on the Tibetan Plateau.

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The contribution of arbuscular mycorrhizal fungi to ecosystem respiration and methane flux in an ephemeral plants‐dominated desert

et al. 2020

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Arbuscular mycorrhizal fungi (AMF) can significantly influence the soil carbon cycle, however, their impacts on desert soils are still unclear. Here, a field control experiment, using in‐growth mesocosms, was conducted to quantitatively assess the contribution of AMF and ephemeral plants to ecosystem respiration (Re) and methane (CH4) flux in the Gurbantunggut Desert in China, from April to May 2017. Ephemeral plant biomass was significantly increased by AMF infection. Re was significantly positively correlated with AMF infection rate, whereas CH4 flux was significantly negatively correlated. The contribution of AMF to Re was up to 24%, comparable to the contribution of non‐AMF microbial respiration, which accounted for up to 36%, whereas the respiration of ephemeral plants accounted for 40%. Variation in Re was most strongly associated with soil organic carbon and soil available potassium concentrations and soil temperature. Non‐AMF microorganisms accounted for most of the CH4 flux (up to 85%). In contrast, AMF only accounted for 15% of total CH4 flux. The CH4 flux was significantly influenced by soil NO3−‐N content, soil moisture, soil temperature and soil NH4+‐N content. Overall, AMF significantly influenced Re and CH4 flux, and also enhanced the growth of ephemeral plants, which have an important role in the carbon cycle in desert ecosystems.

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The increasing distribution area of zokor mounds weaken greenhouse gas uptakes by alpine meadows in the Qinghai–Tibetan Plateau

Cited by 51 publications

References 27 publications

Seasonal changes of CO2, CH4 and N2O fluxes in different types of alpine grassland in the Qinghai-Tibetan Plateau of China

Seasonal changes of CO2, CH4 and N2O fluxes in different types of alpine grassland in the Qinghai-Tibetan Plateau of China

Nitrous Oxide Emission Rates over 10 Years in an Alpine Meadow on the Tibetan Plateau

The contribution of arbuscular mycorrhizal fungi to ecosystem respiration and methane flux in an ephemeral plants‐dominated desert

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