A5101863745- Plant Water Relations and Carbon Dynamics
- Remote Sensing in Agriculture
- Climate variability and models
- Tree-ring climate responses
- Hydrology and Drought Analysis
- Forest ecology and management
- Atmospheric and Environmental Gas Dynamics
- Soil Carbon and Nitrogen Dynamics
- Climate change and permafrost
- Remote Sensing and LiDAR Applications
- Cryospheric studies and observations
- Ecology and Vegetation Dynamics Studies
- Environmental and Agricultural Sciences
- Forest Management and Policy
- Land Use and Ecosystem Services
- Fire effects on ecosystems
- Remote Sensing and Land Use
- Hydrology and Watershed Management Studies
- Species Distribution and Climate Change
- Environmental Changes in China
- Urban Heat Island Mitigation
- Flood Risk Assessment and Management
- Plant Ecology and Soil Science
- Geology and Paleoclimatology Research
- Climate change impacts on agriculture
Institute of Atmospheric Physics
2024
Institute of Tibetan Plateau Research
2022-2024
Chinese Academy of Sciences
2022-2024
State Key Laboratory of Remote Sensing Science
2024
Fudan University
2024
Northwest Normal University
2022-2024
Beijing Normal University
2014-2023
Chengdu University of Technology
2023
University of Chinese Academy of Sciences
2010-2023
ShanghaiTech University
2022
Climate conditions significantly affect vegetation growth in terrestrial ecosystems. Due to the spatial heterogeneity of ecosystems, responses climate vary considerably with diverse patterns and time-lag effects, which are most important mechanism climate-vegetation interactive effects. Extensive studies focused on large-scale vegetation-climate interactions use simultaneous meteorological indicators develop models; however, effects less considered, tends increase uncertainty. In this study,...
Drought is one of the most complex and harmful natural disasters. A study on temporal spatial patterns evolution drought can provide a scientific basis for predicting occurrences. Based multi-source dataset, we select suitable control indicator improving vegetation health index (VHI), optimize its algorithm through Pearson correlation analysis, compare VHI performance before after improvement various types. Results show that (1) self-calibrated Palmer severity more than standardized...
Due to global warming, drought events have become more frequent, which resulted in aggravated crop failures, food shortage, larger and energetic wildfires, seriously affected socio-economic development agricultural production. In this study, a long-term (1981-2021), high-resolution (4 km) improved vegetation health index (VHI) dataset integrating climate, soil moisture was developed. Based on records from the Emergency Event Database, we compared detection efficiency of VHI before after its...
Temperature sensitivity of soil respiration (Q 10 ) is an important parameter in modeling effects global warming on ecosystem carbon release. Experimental studies have ubiquitously indicated that Q has high spatial heterogeneity. However, most biogeochemical models still use a globally constant projecting future climate change, partly because no pattern values been derived. In this study, we conducted inverse analysis to retrieve spatially heterogeneous by assimilating data organic into...
Fractional vegetation cover (FVC) is an important biophysical parameter of terrestrial ecosystems. Variation FVC a major problem in research fields related to remote sensing applications. In this study, the global from 1982 2011 was estimated by GIMMS NDVI data, USGS land characteristics data and HWSD soil type with modified dimidiate pixel model, which considered types mixed pixels decomposition. The evaluation robustness accuracy MODIS Validation Land European Remote Instruments (VALERI)...
Abstract Droughts, which are characterized by multiple dimensions including frequency, duration, severity, and onset timing, can impact tree stem radial growth profoundly. Different of drought influence independently or jointly, makes the development accurate predictions a formidable challenge. Measurement‐based tree‐ring data have obvious advantages for studying responses trees. Here, we explored use abundant records quantifying regional response patterns to key drought. Specifically,...
Abstract In this article, we recall the United Nations’ 30-year journey in disaster risk reduction strategy and framework, review latest progress key scientific technological questions related to Nations initiatives, summarize framework contents of science research. The object research is “disaster system” consisting hazard, geographical environment, exposed units, with features regionality, interconnectedness, coupling, complexity. Environmental stability, hazard threat, socioeconomic...
[1] Basal ecosystem respiration rate (BR), the at a given temperature, is common and important parameter in empirical models for quantifying (ER) globally. Numerous studies have indicated that BR varies space. However, many ER still use global constant largely due to lack of functional description BR. In this study, we redefined be mean annual temperature. To test validity concept, conducted synthesis analysis using 276 site-years eddy covariance data, from 79 research sites located...
Understanding the thermal contribution of urban land cover is crucial for alleviating heat islands (UHIs). Extensive work has assessed this by estimating responses heat-related variables, such as surface temperature (LST), to landscape patterns in terms composition and configuration. However, ignoring endogenous collinearity may lead biased estimations. In study, an elastic net regularized regression was used disentangle contributions (i.e, local cooling/warming effects) six types (i.e.,...
Drought-induced tree mortality has recently received considerable attention. Questions have arisen over the necessary intensity and duration thresholds of droughts that are sufficient to trigger rapid forest declines. The values such tipping points leading declines due drought presently unknown. In this study, we evaluated potential relationship between level growth concurrent conditions with data growth-related ring width index (RWI) two dominant conifer species (Pinus edulis Pinus...
Abstract The Tibetan Plateau (TP) has warmed at a rate twice the global average and presents unique warming patterns in surface temperature changes. However, key characteristics of glacier heatwave duration intensity over TP during present extreme period are still unknown. In this study, we show that temperatures glacial regions (0.37 ± 0.10°C per decade) have increased faster than those non‐glacial areas (0.29 0.05°C between 2001 2020. Moreover, (5.3 3.2 days cumulative (24.9 16.3 °C...
Abstract China has implemented a series of ecological engineering projects to help achieve the 2060 carbon neutrality target. However, lack quantitative research on and contribution climate change terrestrial sinks limits this goal. This study uses robust statistical models combined with multiple biosphere quantify impact China's ecosystem sink trends their differences according difference between reality nonpractice assumptions. The main conclusions include following: (1) since 1901, 84% in...
Ecosystem carbon (C) uptake is determined largely by C residence times and increases in net primary production (NPP). Therefore, evaluation of at a regional scale requires knowledge on spatial patterns both NPP increases. In this study, we first applied an inverse modeling method to estimate the conterminous United States. Then combined estimated with change trend assess The analysis was done using genetic algorithm based 12 observed data sets pools fluxes. Residence were minimizing total...
Abstract Forests have been recognized to sequester a substantial amount of carbon (C) from the atmosphere. However, considerable uncertainty remains regarding magnitude and time course C sink. Revealing intrinsic relationship between forest age sink is crucial for reducing uncertainties in prediction potential. In this study, we developed stepwise data assimilation approach combine process‐based Terrestrial ECOsystem Regional model, observations multiple sources, stochastic sampling...
Wind farms (WFs) can affect the local climate, and climate change may influence underlying vegetation. Some studies have shown that WFs certain aspects of regional such as temperature rainfall. However, there is still no evidence to demonstrate whether vegetation growth, a significant part overall assessment WF effects. In this research, based on moderate-resolution imaging spectroradiometer (MODIS) index, productivity other remote-sensing data from 2003 2014, effects in Bashang area...
Along with global climate change, the occurrence of extreme droughts in recent years has had a serious impact on Amazon region. Current studies driving factors 2005 and 2010 focused influence precipitation, whereas impacts temperature radiation have received less attention. This study aims to explore climate-driven Amazonian vegetation decline during using index, datasets. First, time-lag effects responses were analyzed. Then, multiple linear regression model was established estimate...
Abstract Timely monitoring of global plant biogeochemical processes demands fast and highly accurate estimation nutrition status, which is often estimated based on hyperspectral data. However, few such studies have been conducted degraded vegetation. In this study, complete combinations either original reflectance or first-order derivative spectra developed to quantify leaf nitrogen (N), phosphorus (P), potassium (K) contents tree, shrub, grass species using datasets from light, moderate,...
Abstract. Research into lake outburst events has been mainly focused on small glacial lakes in the Himalaya, while historical from large inland are few and have received less attention. Large Tibetan Plateau expanding rapidly, with recent signs of increasing risk, highlighting need to elucidate their processes, causes, mechanisms mitigate future impacts. Here, long-term satellite mapping shows that number surface area exhibited an trend over past 50 years, peaking 2023. Two notable occurred...
An extreme drought event is usually a long-term process with different stages. Although it well known that droughts have occurred frequently in recent years can substantially affect vegetation growth, few studies revealed the characteristics of responses for stages an event. Especially, should address when growth was disturbed and how recovered through In this study, we used Normalized Difference Vegetation Index (NDVI) Palmer Drought Severity (PDSI) to evaluate response severe during...