A5101528424- Rangeland Management and Livestock Ecology
- Ecology and Vegetation Dynamics Studies
- Soil Carbon and Nitrogen Dynamics
- Plant Water Relations and Carbon Dynamics
- Remote Sensing in Agriculture
- Climate change and permafrost
- Land Use and Ecosystem Services
- Cryospheric studies and observations
- Species Distribution and Climate Change
- Heavy Metal Exposure and Toxicity
- Plant Ecology and Soil Science
- Selenium in Biological Systems
- Trace Elements in Health
- Climate variability and models
- Pasture and Agricultural Systems
- Environmental and Agricultural Sciences
- Rangeland and Wildlife Management
- Mercury impact and mitigation studies
- Wildlife Ecology and Conservation
- Plant and animal studies
- Meteorological Phenomena and Simulations
- Plant Reproductive Biology
- Environmental Changes in China
- Microbial Community Ecology and Physiology
- Polar Research and Ecology
Chinese Academy of Sciences
2016-2025
Institute of Geographic Sciences and Natural Resources Research
2016-2025
Ecosystem Sciences
2014-2017
Agricultural Information Institute
2017
Chinese Academy of Agricultural Sciences
2017
Hebei University of Engineering
2017
University of Chinese Academy of Sciences
2010
More and more studies have focused on responses of ecosystem carbon cycling to climate change phenological change, aboveground net primary productivity (ANPP) is a component global cycling. However, it remains unclear whether the or has stronger effects ANPP. In this study, we compared ANPP during 2000-2013 across 36 alpine grassland sites Tibetan Plateau. Our results indicated that showed positive relationship with plant phenology such as prolonged length growing season advanced start...
There are still uncertainties on the impacts of season-non-uniform-warming plant precipitation use efficiency (PUE) and its temporal stability (PUE ) in alpine areas. Here, we examined changes PUE under two scenes non-growing/growing season non-uniform-warming (i.e., GLNG: growing-season-warming lower than non-growing-season-warming; GHNG: higher non-growing-season-warming) based a five-year experiment. The GLNG treatment increased by 38.70% reduced 50.47%, but GHNG did not change . This...
Warming is an important climate change, both plant diversity and aboveground net primary production (ANPP) are closely correlated with ecosystem functions services. A field warming experiment along elevation gradient (4313–4693 m) was performed in three alpine grassland sites, the Northern Tibet to investigate whether can alter distribution patterns of ANPP, species phylogenetic diversity. altered elevational distributions by reducing α-diversity, but increased β-diversity among elevations....
It is still unknown whether climate warming can change the elevation distribution of soil microbial communities in alpine grasslands. Both species and phylogenetic β-diversity bacterial fungal were investigated at three grasslands (site A: 4300 m, site B: 4500 C: 4700 m) after 7–8 years experimental warming. Three main findings observed. First, may increase community between altitudes, while decrease altitudes. This finding be due to their (species vs. community) different relationships with...
Precipitation variability profoundly influences soil microbial diversity, community assembly processes, and co-occurrence networks. However, the responses of structure to relative precipitation changes in alpine regions remain uncertain. To address this, we conducted a two-year field manipulation experiment steppe desert ecosystems at source Yarlung Zangbo River on Tibetan Plateau. The simulated 25%, 50%, 75% increases decreases examine how communities respond altered regimes. Our results...
Species richness and diversity indices (Shannon-Wiener index, Simpson dominance index Pielou evenness index) in alpine grassland ecosystems (alpine meadow, steppe desert steppe) under grazing—excluded freely grazed sites were investigated along the Northern Tibetan Plateau Alpine Grassland Transect during summer 2009 2010. We found that species have not been significantly altered by short—term grazing exclusion since 2006 at vegetation regional scales. mainly driven growing season...
The northern Tibetan Plateau is the most traditional and important semi-nomadic region in Tibet. alpine vegetation sensitive vulnerable to climate change human activities, also as an ecological security protecting headwaters of major rivers Asia. Therefore, grasslands have fundamental significance both Mainland China South pasture degradation, however, likely threatens livelihood residents habitats wildlife on this plateau. Since 2004, government has launched a series restoration projects...
Although alpine meadows of Tibet are expected to be strongly affected by climatic warming, it remains unclear how soil organic C (SOC), total N (TN), ammonium (NH4 (+)-N) , nitrate (NO3 (+)-N), and dissolved (DOC) (DON) respond warming. This study aims investigate the responses these pools short-term experimental warming in an meadow Tibet. A experiment using open top chambers was conducted at three elevations (i.e., a low (4313 m), mid-(4513 high (4693 m) elevation) May 2010. Topsoil (0-20...
Alpine meadows are one major type of pastureland on the Tibetan Plateau. However, few studies have evaluated response soil respiration (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:msub><mml:mrow><mml:mi>R</mml:mi></mml:mrow><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>) to grazing along an elevation gradient in alpine meadow Here three fenced enclosures were established at elevations (i.e., 4313 m, 4513 and 4693 m) July 2008. We...
The uncertain responses of aboveground net primary productivity (ANPP) and plant diversity to climate warming increased precipitation will limit our ability predict changes in vegetation under future change further constrain protect biodiversity ecosystems. A long-term experiment was conducted explore the ANPP, species, phylogenetic α-diversity, community composition an alpine meadow Northern Tibet from 2014 2019. Coverage, height, species name were obtained by conventional investigation...
The contents of major and trace elements were analyzed in 204 different types water samples 138 villages across 51 counties cities Tibet. average concentrations arsenic (As), selenium, fluorine for each category decreased the following order: (in μg/L: hot spring 241.37 > lake 27.46 stream 22.11 shallow well 11.57 deep 6.22), selenium 0.85 0.68 0.62 0.39 0.36), mg/L: 2.10 1.06 0.45 0.20 0.15). distribution Tibetan waters ranged between 77.35 μg/L Ali prefecture 1.17 Chamdo prefecture,...
Accurate quantification of aboveground biomass grasslands in alpine regions plays an important role accurate global carbon cycling. The monthly normalized difference vegetation index (NDVI), enhanced (EVI), mean air temperature (Ta), ≥5°C accumulated (AccT), total precipitation (TP), and the ratio TP to AccT (TP/AccT) were used model (AGB) on Tibetan Plateau. Three stepwise multiple regression methods, including AGB with NDVI EVI, Ta, AccT, TP/AccT, NDVI, TP/AccT compared. absolute error...
Asymmetrical warming between elevations is a common phenomenon and magnitude increases with increasing on the Tibetan Plateau, which in turn may reduce temperature differences elevations. However, it still unclear how such will affect plant community composition alpine grasslands Plateau. Therefore, this study, we performed an experiment at three (i.e., 4,300 m, 4,500 4,700 m) grasslands, Northern Plateau since May, 2010. Open top chambers were established m m. Plant species phylogenetic...
It is well known that asymmetric warming among elevations (i.e., magnitude increases with increasing elevation) will weaken the difference of air temperature elevations. However, it remains controversial on whether can homogenize plant α-diversity and above-ground net primary production (ANPP) in alpine regions. In present study, we conducted an experiment grasslands, Northern Tibet since 2010. There were four treatments, including a treatment under natural conditions at elevation 4,313 m...
Quantifying the impact of climate change and vegetation phenology on ecosystem productivity in alpine grasslands Tibetan Plateau (TP) is essential for assessing carbon balance dynamics at regional global scales. However, relative contributions phenological to across various grassland types remain indistinguishable. This study examined effects net primary (NPP) meadow steppe ecosystems TP from 2001 2020. The results revealed that (1) NPP exhibited a positive correlation with phenology,...
Soil moisture (SM) serves as a vital indicator reflecting environmental water conditions, but significant uncertainties still persist regarding how human activity and climate change affect SM. In this study, we quantified the influences of on growing-season SM in Qinghai–Tibet grasslands from 2000 to 2020. Climate led decline spatially mean at rate −0.01 −0.06 g −1 year 0–10 10–20 cm, respectively. Nonetheless, caused soil become wetter 39.97% 22.29% areas Human resulted by 36% 21% 2.82% cm...