Changhui Peng
A5015965839- Plant Water Relations and Carbon Dynamics
- Forest ecology and management
- Atmospheric and Environmental Gas Dynamics
- Soil Carbon and Nitrogen Dynamics
- Peatlands and Wetlands Ecology
- Ecology and Vegetation Dynamics Studies
- Fire effects on ecosystems
- Forest Management and Policy
- Land Use and Ecosystem Services
- Remote Sensing in Agriculture
- Climate variability and models
- Remote Sensing and LiDAR Applications
- Tree-ring climate responses
- Species Distribution and Climate Change
- Plant responses to elevated CO2
- Hydrology and Watershed Management Studies
- Forest Ecology and Biodiversity Studies
- Soil and Unsaturated Flow
- Climate change and permafrost
- Soil and Water Nutrient Dynamics
- Atmospheric chemistry and aerosols
- Coastal wetland ecosystem dynamics
- Methane Hydrates and Related Phenomena
- Conservation, Biodiversity, and Resource Management
- Environmental Impact and Sustainability
Université du Québec à Montréal
2016-2025
Hunan Normal University
2020-2025
Yunnan Agricultural University
2024
Huazhong Agricultural University
2024
Hubei Institute of Fine Arts
2024
Changjiang Water Resources Commission
2024
National University of Singapore
2024
Northwest A&F University
2014-2023
Changsha Normal University
2023
Ecological Society of America
2016-2017
Abstract. Understanding and quantifying the global methane (CH4) budget is important for assessing realistic pathways to mitigate climate change. Atmospheric emissions concentrations of CH4 continue increase, making second most human-influenced greenhouse gas in terms forcing, after carbon dioxide (CO2). The relative importance compared CO2 depends on its shorter atmospheric lifetime, stronger warming potential, variations growth rate over past decade, causes which are still debated. Two...
The location and mechanisms responsible for the carbon sink in northern mid-latitude lands are uncertain. Here, we used an improved estimation method of forest biomass a 50-year national resource inventory China to estimate changes storage living between 1949 1998. Our results suggest that Chinese forests released about 0.68 petagram 1980, annual emission rate 0.022 carbon. Carbon increased significantly after late 1970s from 4.38 4.75 by 1998, mean accumulation 0.021 per year, mainly due...
Abstract. The global methane (CH4) budget is becoming an increasingly important component for managing realistic pathways to mitigate climate change. This relevance, due a shorter atmospheric lifetime and stronger warming potential than carbon dioxide, challenged by the still unexplained changes of CH4 over past decade. Emissions concentrations are continuing increase, making second most human-induced greenhouse gas after dioxide. Two major difficulties in reducing uncertainties come from...
Significance Understanding the location of carbon sources and sinks is essential for accurately predicting future changes in atmospheric dioxide climate. Mid- to high-latitude terrestrial ecosystems are well known be principal sink regions, yet less attention has been paid mid- low-latitude ecosystems. In this study, long-term eddy covariance observations demonstrate that there a high uptake (net ecosystem productivity) by East Asian monsoon subtropical forests were shaped uplift Tibetan...
Abstract Soil carbon (C) is a critical component of Earth system models (ESMs), and its diverse representations are major source the large spread across in terrestrial C sink from third to fifth assessment reports Intergovernmental Panel on Climate Change (IPCC). Improving soil projections high priority for modeling future IPCC other assessments. To achieve this goal, we suggest that (1) model structures should reflect real‐world processes, (2) parameters be calibrated match outputs with...
Accurately simulating gross primary productivity (GPP) in terrestrial ecosystem models is critical because errors simulated GPP propagate through the model to introduce additional biomass and other fluxes. We evaluated simulated, daily average from 26 against estimated at 39 eddy covariance flux tower sites across United States Canada. None of this study match within observed uncertainty. On average, overestimate winter, spring, fall, underestimate summer. Models overpredicted under dry...
Bamboo is widely distributed in Southeast Asia, Africa, and Latin America. As a major non-wood forest product wood substitute, bamboo of increasing interest to ecologists owing its rapid growth correspondingly high potential for mitigating climate change. With long history production utilization bamboo, China one the countries with richest resources largest area forest, has paid unprecedented attention recent decades management forests. This review summarizes versatility terms ecological...
Our understanding and quantification of global soil nitrous oxide (N2 O) emissions the underlying processes remain largely uncertain. Here, we assessed effects multiple anthropogenic natural factors, including nitrogen fertilizer (N) application, atmospheric N deposition, manure land cover change, climate rising CO2 concentration, on N2 O for period 1861-2016 using a standard simulation protocol with seven process-based terrestrial biosphere models. Results suggest have increased from 6.3 ±...
Our current understanding of terrestrial carbon processes is represented in various models used to integrate and scale measurements CO 2 exchange from remote sensing other spatiotemporal data. Yet assessments are rarely conducted determine how well simulate across vegetation types environmental conditions. Using standardized data the North American Carbon Program we compare observed simulated monthly 44 eddy covariance flux towers America 22 biosphere models. The analysis period spans ∼220...
The boreal forests, identified as a critical “tipping element” of the Earth's climate system, play role in global carbon budget. Recent findings have suggested that terrestrial sinks northern high-latitude regions are weakening, but there has been little observational evidence to support idea reduction ecosystems. Here, we estimated changes biomass sink natural stands throughout Canada's forests using data from long-term forest permanent sampling plots. We found recent decades, rate change...
<strong class="journal-contentHeaderColor">Abstract.</strong> Terrestrial biosphere models (TBMs) have become an integral tool for extrapolating local observations and understanding of land–atmosphere carbon exchange to larger regions. The North American Carbon Program (NACP) Multi-scale synthesis Model Intercomparison Project (MsTMIP) is a formal model intercomparison evaluation effort focused on improving the diagnosis attribution at regional global scales. MsTMIP builds upon current past...
As the permafrost region warms, its large organic carbon pool will be increasingly vulnerable to decomposition, combustion, and hydrologic export. Models predict that some portion of this release offset by increased production Arctic boreal biomass; however, lack robust estimates net balance increases risk further overshooting international emissions targets. Precise empirical or model-based assessments critical factors driving are unlikely in near future, so address gap, we present from 98...
Abstract Nitrous oxide (N 2 O) is an important greenhouse gas and also ozone-depleting substance that has both natural anthropogenic sources. Large estimation uncertainty remains on the magnitude spatiotemporal patterns of N O fluxes key drivers production in terrestrial biosphere. Some biosphere models have been evolved to account for nitrogen processes show capability simulate emissions from land ecosystems at global scale, but large discrepancies exist among their estimates primarily...
Abstract Increasing atmospheric methane (CH 4 ) concentrations have contributed to approximately 20% of anthropogenic climate change. Despite the importance CH as a greenhouse gas, its growth rate and dynamics over past two decades, which include stabilization period (1999–2006), followed by renewed starting in 2007, remain poorly understood. We provide an updated estimate emissions from wetlands, largest natural global source, for 2000–2012 using ensemble biogeochemical models constrained...
Abstract Forest productivity may be determined not only by biodiversity but also environmental factors and stand structure attributes. However, the relative importance of these in determining is still controversial for subtropical forests. Based on a large dataset from 600 permanent forest inventory plots across China, we examined relationship between tested whether structural attributes (stand density terms trees per ha, age tree size) (climate site conditions) had larger effects...