Article
Environmental Sciences
Ya-Li Liu, Jun-Feng Wang, Guan-Li Jiang, Lu-Yang Wang, Zi-Teng Fu, Ho-Jeong Kang, Qing-Bai Wu
Summary: Greenhouse gas emissions from high-cold terrestrial ecosystems on the Qinghai-Tibet Plateau underlain by permafrost have received attention. The factors controlling ecosystem respiration and its components, as well as the differences in carbon emissions from different ecotypes and seasons, are still unclear. This study found that the dominant factors regulating respiration and its components vary with seasons, with autotrophic respiration contributing the most to seasonal changes. Soil temperature, nutrient conditions, and microbial activity were identified as important factors during the growing season.
ADVANCES IN CLIMATE CHANGE RESEARCH
(2023)
Article
Biodiversity Conservation
Yi Yang, Dongsheng Zhao, Hui Chen
Summary: This study proposes a new framework for quantifying the ecological carrying capacity in vulnerable ecoregions and analyzes it on the Qinghai-Tibet Plateau. The results show variations in vegetation cover requirements and aboveground net primary production across different regions, resulting in varying ecological carrying capacity.
ECOLOGICAL INDICATORS
(2022)
Article
Soil Science
Yuechen Tan, Yifei Wang, Zhu Chen, Mengying Yang, Yu Ning, Chunyan Zheng, Zhangliu Du, Roland Bol, Di Wu
Summary: The long-term artificial drainage of peatlands has various effects on soil properties, community compositions, and nitrogen cycle in peatland soils. This study investigates the impacts of drainage on soil properties, community compositions, and greenhouse gas emissions in the world's largest alpine peatland. The results show that drainage reduces CO2 emissions but affects N2O and N2 emissions differently under varying conditions.
Article
Biodiversity Conservation
Danghui Xu, Wenbo Mou, Xiejun Wang, Ruiying Zhang, Tianpeng Gao, Dexiecuo Ai, Jianli Yuan, Renyi Zhang, Xiangwen Fang
Summary: Grassland degeneration significantly decreases net CO2 uptake, gross primary productivity, ecosystem respiration, plant respiration, and heterotrophic respiration. Degradation also alters the carbon balance of the ecosystem, further impacting carbon-climate feedbacks.
ECOLOGICAL INDICATORS
(2022)
Article
Construction & Building Technology
Yupeng Fan, Chuanglin Fang
Summary: Qinghai-Tibet Plateau is a unique geographical unit with diverse habitat types and biological species, playing a significant role in the surrounding areas and the world. Understanding its overall development capacity and status is crucial for balancing ecosystem protection and meeting the needs of people in western China. This study constructs a comprehensive development capacity index to reveal the real sustainability and discusses the spatiotemporal characteristics and reasons behind the changes. Measures are proposed to promote sustainable development.
SUSTAINABLE CITIES AND SOCIETY
(2022)
Article
Plant Sciences
Hu Yao, Haijun Peng, Bing Hong, Qian Guo, Hanwei Ding, Yetang Hong, Yongxuan Zhu, Cheng Cai, Jinshu Chi
Summary: The study found that the Hongyuan alpine peatland acted as a CO2 sink in 2014 and 2015, with significant carbon uptake during both growing and non-growing seasons. The research also showed that non-growing season carbon emissions should not be overlooked, and that the CO2 flux in the non-growing season was more sensitive to warming than in the growing season. The importance of continuous eddy covariance measurements and time series analysis approaches for understanding the temporal variability in NEE and its correlation with environmental factors was emphasized.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Rui-Zhe Wang, Xia Hu
Summary: Soils in alpine ecosystems are significant carbon sinks, with soil aggregates and their pore structure playing a crucial role in carbon sequestration. This study examined the soil pore structure, carbon content, and their relationships in three typical alpine ecosystems in the Qinghai-Tibet Plateau. The results revealed the dominance of small macroaggregates and microspores in the soil aggregates, as well as the correlation between carbon content and pore characteristics. Additionally, the study highlighted the impact of soil water content and particle compositions on soil organic carbon in different alpine ecosystems.
Article
Ecology
Xueqin Li, Yan Yan, Lijiao Fu
Summary: The study found that water significantly affects ecosystem respiration and soil respiration in a typical alpine steppe in Northern Tibet, with soil moisture showing a positive linear relationship with Re and Rs. Through multiple linear regression analysis, soil temperature and water content were identified as key factors influencing Rs and Re.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2021)
Article
Soil Science
Fei Peng, Wenjuan Zhang, Chimin Lai, Chengyang Li, Quangang You, Xian Xue, Shaoixu Ma, Atsushi Tsunekawa
Summary: This study investigated the response of soil microbial decomposition of soil organic carbon to temperature variation, and found a warming legacy effect on the microbial decomposition of soil organic C even after warming had stopped, resulting from changes in plant productivity and fungal community composition.
APPLIED SOIL ECOLOGY
(2021)
Article
Plant Sciences
Ailin Zhang, Xiangyi Li, Fanjiang Zeng, Yong Jiang, Ruzhen Wang
Summary: The plant functional group is an important bridge connecting individual plants to the community system in grassland ecosystems, especially in the grassland ecosystem of the Qinghai-Tibet Plateau. The composition and changes in the plant functional group reflect the community characteristics, and the dominant functional groups have a strong correlation with community and soil nutrients.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Shuai An, Xiaoqiu Chen, Miaogen Shen, Xiaoyang Zhang, Weiguang Lang, Guohua Liu
Summary: This study examines the interspecific difference in spring and autumn phenology response to climate change among five high mountain herbs in the eastern Qinghai-Tibet Plateau. Results show that while green-up dates were not significantly shifted, brown-off dates were significantly delayed with warming. The difference in brown-off dates among species increased significantly over time, indicating complex responses to future climate change and potential alteration of the alpine plant community.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Environmental Sciences
Zi-Teng Fu, Qing-Bai Wu, Lu-Yang Wang, Ya-Li Liu
Summary: Alpine vegetation plays a crucial role in maintaining the thermal stability of permafrost under a warming climate. In this study, the response of soil hydrothermal dynamics in the active layer to permafrost degradation was examined in different alpine grasslands on the Qinghai-Tibet Plateau. The results showed that vegetation type and soil properties influenced soil temperature, soil water content, and freeze-thaw processes, with alpine meadows exhibiting distinct characteristics.
ADVANCES IN CLIMATE CHANGE RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Wensi Ma, Tonghua Wu, Xiaodong Wu, Sizhong Yang, Ren Li, Shiqiao Zhou, Xiangfei Li, Xiaofan Zhu, Junming Hao, Jie Ni, Dong Wang
Summary: This study investigated the carbon budgets of four ecosystems (alpine meadow, steppe, forest, and cropland) on the Tibetan Plateau from 2004 to 2017. The results showed that forest, cropland, and alpine meadow ecosystems acted as carbon sinks, while alpine steppe and overmature forest ecosystems served as carbon sources. The temperature sensitivity of carbon emissions was higher in the forest and alpine steppe ecosystems compared to the alpine meadow ecosystems. Multiple linear regression analysis revealed that water forcing was the main predictor for carbon fluxes in alpine steppe and alpine meadow ecosystems, while temperature forcing was the main predictor in forest and cropland ecosystems.
Article
Green & Sustainable Science & Technology
Xiuying Wang, Yuancang Ma, Fu Li, Qi Chen, Shujiao Sun, Honglu Ma, Rui Zhang
Summary: Through infrared wetland research and machine learning, we constructed a predictive model for net ecosystem CO2 exchange (NEE) and studied the effect of outlier treatments in different seasons on the model. The results showed that outlier treatments improved the interpolation accuracy and data quality of NEE, and the multilayer perceptron (MLP) model was the most stable with the best interpolation effect. Additionally, there were seasonal differences in the prediction of NEE.
Article
Biodiversity Conservation
Haoyu Zhang, Chongchong Ye, Shuai Wang
Summary: This paper evaluates the ecosystem multifunctionality (EMF) of the Qinghai-Tibet Plateau using three calculation approaches and presents its spatial pattern. The study finds that EMF varies across different ecosystems and is influenced by altitude and climate change.
GLOBAL ECOLOGY AND CONSERVATION
(2022)
Article
Geography, Physical
Bing Hong, Masao Uchida, Yetang Hong, Haijun Peng, Miyuki Kondo, Hanwei Ding
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2018)
Article
Geography, Physical
Yang Gao, Kangning Xiong, Mingying Quan, Bing Song, Haijun Peng, Huirong Peng, Weidan Shen, Kunshan Bao
QUATERNARY INTERNATIONAL
(2019)
Article
Agronomy
Haijun Peng, Qian Guo, Hanwei Ding, Bing Hong, Yongxuan Zhu, Yetang Hong, Cheng Cai, Yu Wang, Linggui Yuan
AGRICULTURAL AND FOREST METEOROLOGY
(2019)
Article
Geography, Physical
Qiangshan Gao, Shijie Wang, Tao Peng, Haijun Peng, David M. Oliver
Article
Agriculture, Multidisciplinary
Yanwei Wang, Weijun Luo, Guangneng Zeng, Haijun Peng, Anyun Cheng, Lin Zhang, Xianli Cai, Jia Chen, Yina Lyu, Hanling Yang, Shijie Wang
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2020)
Article
Geography, Physical
Haijun Peng, Kunshan Bao, Lingui Yuan, Masao Uchida, Cheng Cai, Yongxuan Zhu, Bing Hong, Qian Guo, Hanwei Ding, Hu Yao, Yetang Hong
Summary: Analysis of a peat archive from the Hengduan Mountains reveals the rapid changes in monsoonal climate in East Asia since the last deglaciation, with a close connection between dust fluxes in the Yuexi peatland and Asian monsoon variations. The study also demonstrates the significant contribution of human activities to dust fluxes during the late Holocene.
QUATERNARY SCIENCE REVIEWS
(2021)
Letter
Geosciences, Multidisciplinary
Joshua L. Ratcliffe, Haijun Peng, Jelmer J. Nijp, Mats B. Nilsson
Article
Meteorology & Atmospheric Sciences
Haijun Peng, Jinshu Chi, Hu Yao, Qian Guo, Bing Hong, Hanwei Ding, Yongxuan Zhu, Jie Wang, Yetang Hong
Summary: This study measured CO2 and CH4 fluxes in a typical alpine peatland on the Qinghai-Tibetan Plateau using the eddy covariance technique and found that the net CO2-eq flux was primarily influenced by global radiation and soil temperature variations. The results highlight the significant impact of CH4 emissions on the warming effect of the peatlands and the potential implications for future climate change.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2021)
Correction
Geochemistry & Geophysics
Qian Guo, Haijun Peng, Bing Hong, Hu Yao, Yongxuan Zhu, Hanwei Ding, Ning An, Yetang Hong
Article
Geochemistry & Geophysics
Qian Guo, Haijun Peng, Bing Hong, Hu Yao, Yongxuan Zhu, Hanwei Ding, Ning An, Yetang Hong
Summary: Isotopic signature is a powerful tool for differentiating methane sources and understanding CH4 budgets on regional and global scales. A study on an alpine peatland in the eastern Qinghai-Tibetan Plateau found diurnal variations in CH4 concentration and delta C-13-CH4 during the summer, with depleted delta C-13-CH4 signals and high CH4 concentration appearing at nighttime. The summer delta C-13-CH4 signature calculated during the study falls within the range of wetland studies and is close to high-latitude peatlands, suggesting the influence of boundary layer dynamics and CH4 sources on the measured concentrations.
Article
Environmental Sciences
Haijun Peng, Yimeng Rong, Di Chen, Ruiyang Sun, Jie Huang, Hanwei Ding, Carolina Olid, Haiyu Yan
Summary: Mercury mining in southwest China may have started before the establishment of the Qin dynasty, around 2500 years ago, potentially motivated by climate changes and human industrial activities. Two major peaks of mercury deposition were observed in the past 10,000 years, coinciding with critical climate changes. This study highlights the significance of climate variability and local mercury mining in controlling global atmospheric mercury deposition during the Holocene.
Article
Plant Sciences
Hu Yao, Haijun Peng, Bing Hong, Hanwei Ding, Yetang Hong, Yongxuan Zhu, Jie Wang, Cheng Cai
Summary: Wetlands are important carbon stocks, but little is known about carbon emissions from alpine wetlands in arid northwest China. This study measured ecosystem respiration in an alpine wetland and found significant seasonal and diurnal variations. Soil temperature and soil water content were the main factors influencing the variation.
JOURNAL OF PLANT ECOLOGY
(2022)
