The peatland area change in past 20 years in the Zoige Basin, eastern Tibetan Plateau

Li, Yao; Zhao, Yan; Gao, Shujing; Sun, Jinghui; Li, Furong

doi:10.1007/s11707-011-0178-x

Cited by 14 publications

(10 citation statements)

References 2 publications

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“…Decadal evaluations of other similar high mountain ecosystems show that wetland area may increase (H. Li, Xu, & Zhao, 2014;Postigo et al, 2008), decrease (Bury et al, 2013;Z. W. Li et al, 2015;Nie & Li, 2011), exhibit stasis (Gao, Li, & Brierley, 2012), or both increase and decrease (Yao, Zhao, Gao, Sun, & Li, 2011). More could be done to evaluate effects of hydrologic connectivity (DeFries andEshelman 2004, Wohl et al2012), especially in light of the possible nonlinear relationships implied by a peak water hydrograph expected during glacier retreat (Figure 3).…”

Section: Resultsmentioning

confidence: 99%

Exploring hydrologic connections between tropical mountain wetlands and glacier recession in Peru's Cordillera Blanca

et al. 2017

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Receding mountain glaciers affect the hydrology of downslope ecosystems with consequences for drinking water, agriculture, and hydropower production. Here we combined land cover derived from satellite imagery and other environmental data from the northern Peruvian Andes into a first differencing regression model to assess wetland hydrologic connectivity. Wetland area was considered the response variable and a variety of land cover, climatic, and stream discharge explanatory variables were tested to evaluate effects of possible hydrologic connectivity. The results indicate that there were two primary spatial driving forces of wetland change in Peru"s Cordillera Blanca from 1987 to 1995: 1) loss in glacier area was associated with increased wetland area, controlling for other factors; while 2) an increase in mean annual stream discharge in the previous 12 months increased wetland area. The general approach we used expands the ways that connectivity between landscape changes and hydrologic and ecosystem processes can be assessed.

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Section: Resultsmentioning

confidence: 99%

Exploring hydrologic connections between tropical mountain wetlands and glacier recession in Peru's Cordillera Blanca

et al. 2017

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“…Figure 12c shows that the population in each county in the study area has increased gradually over the past 21 years. An increase in the population is also accompanied by an increase in the demand for resources, bringing about enormous pressure on the local area [67]. In the 1970s, to alleviate the population pressure, large-scale trench draining was performed to expand the pasture to meet the grazing demands.…”

Section: Mechanisms Of Influence On the Ecological Riskmentioning

confidence: 99%

Ecological Risk Assessment and Impact Factor Analysis of Alpine Wetland Ecosystem Based on LUCC and Boosted Regression Tree on the Zoige Plateau, China

Hou

Gao

et al. 2020

Remote Sensing

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The Zoige Plateau is typical of alpine wetland ecosystems worldwide, which play a key role in regulating global climate and ecological balance. Due to the influence of global climate change and intense human activities, the stability and sustainability of the ecosystems associated with the alpine marsh wetlands are facing enormous threats. It is important to establish a precise risk assessment method to evaluate the risks to alpine wetlands ecosystems, and then to understand the influencing factors of ecological risk. However, the multi-index evaluation method of ecological risk in the Zoige region is overly focused on marsh wetlands, and the smallest units of assessment are relatively large. Although recently developed landscape ecological risk assessment (ERA) methods can address the above limitations, the final directionality of the evaluation results is not clear. In this work, we used the landscape ERA method based on land use and land cover changes (LUCC) to evaluate the ecological risks to an alpine wetland ecosystem from a spatial pixel scale (5 km × 5 km). Furthermore, the boosted regression tree (BRT) model was adopted to quantitatively analyze the impact factors of ecological risk. The results show the following: (1) From 1990 to 2016, the land use and land cover (LULC) types in the study area changed markedly. In particular, the deep marshes and aeolian sediments, and whereas construction land areas changed dramatically, the alpine grassland changed relatively slowly. (2) The ecological risk in the study area increased and was dominated by regions with higher and moderate risk levels. Meanwhile, these areas showed notable spatio-temporal changes, significant spatial correlation, and a high degree of spatial aggregation. (3) The topographic distribution, climate changes and human activities influenced the stability of the study area. Elevation (23.4%) was the most important factor for ecological risk, followed by temperature (16.2%). Precipitation and GDP were also seen to be adverse factors affecting ecological risk, at levels of 13.0% and 12.1%, respectively. The aim of this study was to provide more precise and specific support for defining conservation objectives, and ecological management in alpine wetland ecosystems.

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“…The site is located in a valley on the eastern side of the Bai River in Hongyuan County, Sichuan Province, China (Figure 1). The Hongyuan peatland extends across an area of 1.1 km 2 and the deepest peat deposition is around 6.5 m. It is a part of the Ruoergai wetland, which covers 15% of the Ruoergai Basin area on the eastern QTP (Peng et al, 2019;L. Yao et al, 2011) and stores approximately 0.48 Pg C, some of which have been formed since 15,000 years ago (Chen et al, 2014).…”

Section: Site Descriptionmentioning

confidence: 99%

“…Due to the intensified human disturbance in the QTP region, many peatlands have been drained for animal husbandry or mined for fuels (Chen et al, 2014;L. Yao et al, 2011).…”

Section: And Ghg Budgets Of Alpine Peatlands On the Qtp Under Global ...mentioning

confidence: 99%

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Methane Emissions Offset Net Carbon Dioxide Uptake From an Alpine Peatland on the Eastern Qinghai‐Tibetan Plateau

et al. 2021

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Carbon dioxide (CO 2 ) and methane (CH 4 ) are the two most important long-lived greenhouse gases (LL-GHGs) and together contribute to over 80% of the radiative forcing caused by LLGHGs (WMO, 2018). Peatlands cover only about 3% of the Earth's land surface area but store over 614 ± 80 Pg (10 15 g) of carbon (C), accounting for one-third of the global soil C pool and about 70% of the atmospheric C pool (Loisel et al., 2017;Xu et al., 2018;Yu, 2011;Yu et al., 2010). It has been widely acknowledged that peatlands have played an important role in regulating the global C and GHG cycles and climate change (Friedlingstein et al., 2019;Frolking et al., 2011;Hopple et al., 2020). Peatland ecosystems have the potential to mitigate climate change by sequestering CO 2 from the atmosphere into biomass and soils (Baldocchi & Penuelas, 2019;Nugent et al., 2019;Stocker et al., 2017); meanwhile, peatlands emit large amounts of CH 4 to the atmosphere during the peatland forming and growing processes (Dommain et al., 2018;Kirschke et al., 2013), thus resulting in contrasting effects on radiative forcing. Both pathways are sensitive to climate change and anthropogenic activities (Chen et al., 2013;Frolking et al., 2011); for example, drought caused by both peatland drainage and low precipitation (Fenner & Freeman, 2011;Swindles et al., 2019), peatland wildfires and burning (Turetsky et al., 2015), and conversion for agricultural uses (Carlson et al., 2013;Dommain et al., 2018) can shift the peatlands from net GHG sinks to sources. However, it should be noted that the historical, current, and future contributions of peatlands to the global C budget and radiative forcing are still uncertain due to limited knowledge of the synergistic feedbacks of CO 2 and CH 4 to climatic perturbation and anthropogenic activities (

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The peatland area change in past 20 years in the Zoige Basin, eastern Tibetan Plateau

Cited by 14 publications

References 2 publications

Exploring hydrologic connections between tropical mountain wetlands and glacier recession in Peru's Cordillera Blanca

Exploring hydrologic connections between tropical mountain wetlands and glacier recession in Peru's Cordillera Blanca

Ecological Risk Assessment and Impact Factor Analysis of Alpine Wetland Ecosystem Based on LUCC and Boosted Regression Tree on the Zoige Plateau, China

Methane Emissions Offset Net Carbon Dioxide Uptake From an Alpine Peatland on the Eastern Qinghai‐Tibetan Plateau

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