Songbai Hong

ORCID: 0000-0002-0450-0817
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About
Contact & Profiles
Research Areas
  • Plant Water Relations and Carbon Dynamics
  • Soil Carbon and Nitrogen Dynamics
  • Remote Sensing in Agriculture
  • Climate variability and models
  • Peatlands and Wetlands Ecology
  • Atmospheric and Environmental Gas Dynamics
  • Plant responses to elevated CO2
  • Plant Ecology and Soil Science
  • Biofuel production and bioconversion
  • Tree-ring climate responses
  • Ecology and Vegetation Dynamics Studies
  • Land Use and Ecosystem Services
  • Remote Sensing and Land Use
  • Agriculture, Soil, Plant Science
  • Forest, Soil, and Plant Ecology in China
  • Bioenergy crop production and management
  • Species Distribution and Climate Change
  • Hydrocarbon exploration and reservoir analysis
  • Soil erosion and sediment transport
  • Climate change and permafrost
  • Forest ecology and management
  • Soil and Water Nutrient Dynamics
  • Microbial Community Ecology and Physiology
  • Methane Hydrates and Related Phenomena
  • Aeolian processes and effects

Peking University
2018-2025

Shenzhen University
2024-2025

Ministry of Natural Resources
2024-2025

Ministry of Education of the People's Republic of China
2025

Peking University Shenzhen Hospital
2025

Abstract Soil pH regulates soil biogeochemical processes and has cascading effects on terrestrial ecosystem structure functions. Afforestation been widely adopted to increase carbon sequestration enhance water preservation. However, the effect of afforestation is still poorly understood inconclusive. Here we investigate afforestation-caused changes with pairwise samplings from 549 afforested 148 control plots in northern China. We find significant neutralization by...

10.1038/s41467-018-02970-1 article EN cc-by Nature Communications 2018-01-31

Global estimates of the size, distribution, and vulnerability soil inorganic carbon (SIC) remain largely unquantified. By compiling 223,593 field-based measurements developing machine-learning models, we report that global soils store 2305 ± 636 (±1 SD) billion tonnes as SIC over top 2-meter depth. Under future scenarios, acidification associated with nitrogen additions to terrestrial ecosystems will reduce (0.3 meters) up 23 next 30 years, India China being most affected. Our synthesis...

10.1126/science.adi7918 article EN Science 2024-04-11

Forestation is regarded as an effective strategy for increasing terrestrial carbon sequestration. However, its sink potential remains uncertain due to the scarcity of large-scale sampling data and limited knowledge linkage between plant soil C dynamics. Here, we conduct a survey 163 control plots 614 forested involving 25304 trees 11700 samples in northern China fill this gap. We find that forestation contributes significant (913.19 ± 47.58 Tg C), 74% which stored biomass 26% organic carbon....

10.1038/s41467-023-38911-w article EN cc-by Nature Communications 2023-06-02

Litter decomposition is a fundamental biogeochemical process for carbon flux and nutrient cycling in terrestrial ecosystems, yet the global variation rates their covariations with climate substrate are not fully understood. Here, we synthesized dataset of 6,733 independent observations across six continents to illustrate climatic controls over litter decomposition. The average various types ranged from 0.74 4.01 y −1 polar tropics, showing large geographical span. directly explained 36 30%...

10.1073/pnas.2420664122 article EN cc-by-nc-nd Proceedings of the National Academy of Sciences 2025-02-11

Abstract Identifying droughts and accurately evaluating drought impacts on vegetation growth are crucial to understanding the terrestrial carbon balance across China. However, few studies have identified critical thresholds that impact China's growth, leading large uncertainty in assessing ecological consequences of droughts. In this study, we utilize gridded surface soil moisture data satellite‐observed normalized difference index (NDVI) assess response China during 2001–2018. Based...

10.1111/gcb.16998 article EN Global Change Biology 2023-10-29

National greenhouse gas (GHG) budget, including CO2, CH4 and N2O has increasingly become a topic of concern in international climate governance. China is paying increasing attention to reducing GHG emissions land sinks effectively mitigate change. Accurate estimates fluxes are crucial for monitoring progress toward mitigating China. This study used comprehensive methods, emission factor process-based models, atmospheric inversions, data-driven estimate the long-term trends sources from all...

10.1093/nsr/nwaf069 article EN cc-by National Science Review 2025-02-22

Agriculture emerges as a prominent contributor to CH4 and N2O emissions in China. However, estimates of these two non-CO2 greenhouse gases (GHGs) remain poorly constrained, hindering precise understanding their spatiotemporal dynamics the development effective mitigation strategies. Here, we established consistent estimation framework that integrates emission-factor approach, data-driven models process-based biogeochemical models, identify magnitudes, spatial variations, long-term trends...

10.1093/nsr/nwaf040 article EN cc-by National Science Review 2025-02-13

Extended growing season lengths under climatic warming suggest increased time for plant growth. However, research has focused on impacts to the timing or duration of distinct phenological events. Comparatively little is known about relative allocation events, example, proportion dedicated leaf growth versus senescence. We use multiple satellite and ground-based observations show that, despite recent climate change during 2001 2020, ratio allocated vegetation green-up over senescence remained...

10.1126/sciadv.adn2487 article EN cc-by-nc Science Advances 2024-06-07

Abstract East Asia (China, Japan, Koreas, and Mongolia) has been the world's economic engine over at least past two decades, exhibiting a rapid increase in fossil fuel emissions of greenhouse gases (GHGs) expressed recent ambition to achieve climate neutrality by mid‐century. However, GHG balance its terrestrial ecosystems remains poorly constrained. Here, we present synthesis three most important long‐lived (CO 2 , CH 4 N O) budgets during decades 2000s 2010s, following dual constraint...

10.1029/2023gb007865 article EN Global Biogeochemical Cycles 2024-02-01

Abstract Global vegetation greening has been widely confirmed in previous studies, yet the changes velocity of green‐up each month period (GUP) remains unclear. Here, we defined as V NDVI (the monthly increase Normalized Difference Vegetation Index [NDVI] during GUP) and further explored its response to climate change middle‐high‐latitude Northern Hemisphere. We found that early GUP, generally showed positive trends from 1982 2015, whereas late it negative most areas. Such contrasting were...

10.1111/gcb.16414 article EN Global Change Biology 2022-08-31

Abstract Climate change strongly impact vegetation phenology, with considerable potential to alter land-atmosphere carbon dioxide exchange and terrestrial cycle. In contrast well-studied spring leaf-out, the timing magnitude of autumn senescence remains poorly understood. Here, we use monthly decreases in Normalized Difference Vegetation Index satellite retrievals their trends surrogate speed during 1982–2018 Northern Hemisphere (>30°N). We find that climate warming accelerated July, but...

10.1038/s43247-023-00835-0 article EN cc-by Communications Earth & Environment 2023-05-19

The first greenhouse gas (GHG) budget accounting over China shows that China's land ecosystems is close to GHG neutral, in contrast the net source of global ecosystems.

10.1093/nsr/nwad274 article EN cc-by National Science Review 2023-10-27

Abstract Increasing atmospheric CO 2 causes substantial spatial and seasonal changes in air temperature precipitation through its radiative (RAD) vegetation physiological (PHY) effects. However, it remains poorly understood on how these two effects impact the integrated climate zone shifts over China. Here, we disentangle RAD PHY of Köppen‐Geiger zones from pre‐industrial to 4 × China using nine Earth system models. We find that approximately 56.1% China, contributes 15.2% such at . regional...

10.1029/2023gl107826 article EN cc-by-nc-nd Geophysical Research Letters 2024-03-08

Enhancing terrestrial carbon (C) stock through ecological restoration, one of the prominent approaches for natural climate solutions, is conventionally considered to be achieved an pathway, i.e., increased plant C uptake. By conducting a comprehensive regional survey 4279 1 × m 2 plots at 517 sites across China’s drylands and 13-y manipulative experiment in semiarid grassland within same region, we show that greater soil ecosystem stocks restored than degraded lands result predominantly from...

10.1073/pnas.2416281121 article EN cc-by Proceedings of the National Academy of Sciences 2024-11-08

Forestation is regarded as an effective strategy for increasing terrestrial carbon sequestration. However, its sink potential remains uncertain due to the scarcity of large-scale sampling data and limited knowledge linkage between plant soil C dynamics. Here, we conduct a survey 163 control plots 614 forested involving 25304 trees 11700 samples in northern China fill this gap. We find that forestation contributes significant (913.19±47.58 Tg C), 74% which stored biomass 26% organic...

10.5194/egusphere-egu25-4926 preprint EN 2025-03-14

Nitrous oxide (N2O) is a kind of long-lived greenhouse gas. Since the Industrial Revolution, increasing atmospheric N2O concentrations have contributed to the depletion of stratospheric ozone layer and climate change. China has been hot spot for global emissions, with rapid growth. However, estimates of emissions from China’s ecosystem remain largely uncertain. Therefore, here we provide multi-method estimates (inventory,...

10.5194/egusphere-egu25-5388 preprint EN 2025-03-14
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