GCB Bioenergy, Journal Year: 2024, Volume and Issue: 17(1)
Published: Nov. 28, 2024
Agricultural lands hold significant potential for CO
Earth s Future, Journal Year: 2024, Volume and Issue: 12(6)
Published: June 1, 2024
Abstract Multiple lines of evidence confirm a widespread increase in vegetation growth across China over the past few decades. The relationship between and water availability is thought to be becoming stronger under climate change, that is, constraints on have been increasing. However, our understanding how influenced these greening trends, especially those change‐driven ones, remains limited. Here, we conduct comprehensive evaluation recent their implications for 1982 2015. By analyzing spatiotemporal patterns availability, reveal changes hidden within an overall trend China. Further analysis demonstrates two change‐related categories, defined broadly as “climate” (e.g., air temperature, precipitation, so on) “CO 2 ” (i.e., atmospheric carbon dioxide), exerted varying levels importance regulating different constraints. With increasing constraints, proportion climate‐dominated area has significantly risen, while CO ‐dominated sharply declined. Our findings highlight can mediate dominance growth. This great potential exacerbate uncertainty surrounding current future sustainable trends.
Language: Английский
Citations
9
Earth s Future, Journal Year: 2025, Volume and Issue: 13(3)
Published: March 1, 2025
Abstract Agrivoltaic systems are characterized by the co‐existence of photovoltaic panels on agricultural land, allowing simultaneous solar energy and food production without need for further land. installations alter local microclimatic conditions land surface, impacting performance embedded in them. In this study we develop an ecohydrological modeling framework combining a module that simulates changes micrometeorology due to panel with state‐of‐the‐art model resolves surface water, energy, vegetation dynamics (i.e., terrestrial biosphere T&C). We demonstrate is capable reproducing grassland across broad range climates agrivoltaic architectures. With use evaluated Mediterranean two most commonly used architectures, namely mixed mounted rotating tracking panels. found C3 yields can be significantly enhanced only where annual potential evapotranspiration exceeds rainfall. Changes productivity were attributed primarily light environment at aerodynamic roughness rainfall redistribution drainage playing smaller negative role comparable magnitudes.
Language: Английский
Citations
1
Journal of Hydrology, Journal Year: 2023, Volume and Issue: 622, P. 129696 - 129696
Published: May 18, 2023
Language: Английский
Citations
17
Global Change Biology, Journal Year: 2024, Volume and Issue: 30(3)
Published: March 1, 2024
Abstract The accelerating pace of climate change has led to unprecedented shifts in surface temperature and precipitation patterns worldwide, with African savannas being among the most vulnerable regions. Understanding impacts these extreme changes on ecosystem health, functioning stability is crucial. This paper focuses detection breakpoints, indicative functioning, while also determining relevant characteristics climatic drivers that increase susceptibility within semi‐arid arid savanna biome. Utilising a remote sensing approach rain use efficiency (RaUE) as proxy for spatial temporal breakpoints biome were identified. We then employed novel combination survival analysis time series compare areas experiencing versus stable functioning. Key factors increasing breakpoint identified, namely higher soil sand content, flatter terrain cooler long‐term mean during wet summer season. Moreover, primary driver savannas, opposed wetter tropical was found be increased frequency severity rainfall events, rather than drought pressures. research highlights importance incorporating wetness metrics alongside comprehensively understand climate–ecosystem interactions leading abrupt biomes. findings emphasise need consider underlying characteristics, including soil, topography vegetation composition, assessing responses change. While this primarily concentrated southern case study, methodological robustness enables its application diverse biomes assessment contribute shifts.
Language: Английский
Citations
4
Global Change Biology, Journal Year: 2021, Volume and Issue: 28(7), P. 2360 - 2380
Published: Dec. 2, 2021
Despite their size and contribution to the global carbon cycle, we have limited understanding of tropical savannas current trajectory with climate change anthropogenic pressures. Here examined interannual variability externally forced long-term changes in water exchange from a high rainfall savanna site seasonal tropics north Australia. We used an 18-year flux data time series (2001-2019) detect trends drivers fluxes water. Significant positive gross primary productivity (GPP, 15.4 g C m2 year-2 ), ecosystem respiration (Reco , 8.0 net (NEE, 7.4 ) use efficiency (WUE, 0.0077 kg H2 O-1 year-1 were computed. There was weaker, non-significant trend latent energy (LE, 0.34 W m-2 ). Rainfall nearby increased statistically over 45-year period during observation period. To examine dominant GPP WUE, random forest approach terrestrial biosphere model conduct attribution experiment. Radiant driver wet season fluxes, whereas soil content dominated dry fluxes. The suggested that [CO2 ], precipitation Tair accounting for 90% modelled WUE. Positive largest implying tree components larger contributor than grassy understorey. Fluxes environmental not significant season, when grasses are active. is potentially still recovering cyclone 45 years ago regrowth this event may also be contributing observed sequestration, highlighting need understand sub-diurnal decadal scales.
Language: Английский
Citations
26
Agricultural and Forest Meteorology, Journal Year: 2025, Volume and Issue: 363, P. 110432 - 110432
Published: Feb. 4, 2025
Language: Английский
Citations
0
Ecological Processes, Journal Year: 2025, Volume and Issue: 14(1)
Published: April 9, 2025
Abstract Background The forest-steppe ecotone, a critical transition zone sensitive to global change, faces increasing nitrogen deposition. However, the interplay between conversion processes and soil enzyme activity remains unclear. We investigated effects of addition on plant nutrient dynamics, microbial functional genes, in northwest Liaoning, China. Results Nitrogen significantly increased leaf content Potentilla tanacetifolia (peak under N40) Artemisia frigida N40), while Lespedeza daurica showed non-linear response N20). Phosphorus remained unaffected across species. Soil activities (urease, nitrate reductase, dehydrogenase) with input, protease rising proportionally rate. Functional genes ( nirK , nifH AOB- amoA ) exhibited dynamic responses: abundance peaked N40, N10, input. Structural equation modeling revealed that gene positively influenced λ = 0.512), negatively correlated N/P ratios −0.606). directly drove 0.734). Conclusions enhances uptake enzyme-driven mineralization, but species-specific responses highlight ecological trade-offs. pH are pivotal mediating stoichiometry. These findings underscore need integrate enzymatic dynamics into management strategies for ecotones enrichment.
Language: Английский
Citations
0
Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 277 - 290
Published: Jan. 1, 2025
Citations
0
Forests, Journal Year: 2025, Volume and Issue: 16(5), P. 756 - 756
Published: April 28, 2025
Plantation forests (PFs) play a crucial role in China’s climate change mitigation strategy due to their significant capacity sequestrate carbon (C). Understanding the long-term trend PFs’ C uptake and key drivers influencing it is for optimizing PF management planning mitigation. In this study, we quantified (1981–2019) sequestration of PFs Jiangsu Province, where have expanded considerably recent decades, particularly since 2015. Seasonal interannual variations gross primary productivity (GPP), net (NPP), ecosystem (NEP) were assessed using boreal simulator (BEPS), process-based terrestrial biogeochemical model. The model integrates multiple sources remote-sensing datasets, such as leaf area index land cover data, simulate critical processes governing surface dynamics, enabling quantification vegetation soil stocks nutrient cycling patterns. results indicated increasing GPP, NPP, NEP over past four suggesting enhanced by across study region. variability these indicators was associated with that nitrogen (N) deposition years, implying availability could be limiting factor plantation productivity. GPP NPP exhibited peak values spring (April May) or late summer (August September), increases growing season years. contrast, peaked but declined negative early (July August), indicating seasonal source–sink transition. All three showed general correlation late-growing-season temperature droughts probably highly constrained existing PFs. These findings provide insights strategic implementation PFs, regions warm temperate undergoing afforestation expansion.
Language: Английский
Citations
0
Forests, Journal Year: 2022, Volume and Issue: 13(5), P. 775 - 775
Published: May 17, 2022
Inherent water-use efficiency (IWUE) is a vital parameter connecting the carbon and water cycles. However, factors influencing IWUE in different forest ecosystems are still subject of debate. In this work, FLUXNET platform measurements 67 sites were used to detect trends four ecosystems, namely deciduous broadleaf forests (DBF), evergreen (EBF), needle-leaf (ENF), mixed (MF). The differed significantly among positively correlated with temperature solar radiation. EBF was highest at 32.02 g·C·Kg·H2O−1. values DBF MF similar higher than that ENF. With increasing latitude, increased first then decreased, maximum 35° N. negatively precipitation leaf area index. Temperature radiation main controlling whereas major factor inter-annual variation ΔIWUE ecosystems. Our results provide scientific basis for study sinks, eco-hydrological processes, ecosystem responses global climatic changes.
Language: Английский
Citations
15