Parallel acceleration of vegetation growth rate and senescence rate across the Northern Hemisphere from 1982 to 2015 DOI Creative Commons

Wendu Rina,

Gang Bao,

Quansheng Hai

и другие.

Global Ecology and Conservation, Год журнала: 2023, Номер 46, С. e02622 - e02622

Опубликована: Сен. 6, 2023

Growth and senescence rates are critical ecological indicators of seasonality shifts vegetation, with both sensitive to climate change. Here we investigated daily mean vegetation growth rates, the major forcing across Northern Hemisphere (>30°N) using satellite-derived normalized difference index (NDVI) flux-based gross primary productivity (GPP) from 1982 through 2015. Both higher at high latitudes than those low latitudes, spatially-averaged values increased by 1.0 × 10−4 0.7 NDVI-units·day−1 per degree latitude. These increases were greater in Eurasia North America. A parallel acceleration (0.8 ×10−4 NDVI-units·day−1·decade−1) (0.6 was found for 34-year study period. The warming-induced peak (peak NDVI) contributed strongly this acceleration, while unequal advances or delays three key phenological (the start (SOS), (POS), end (EOS) growing season) exerted influential effects on rates. However, no single climatic factor during any period appeared responsible variations In areas that determined growth, temperature precipitation accelerated elevating growth. On other hand, rate SOS, rising before SOS decelerated advancing SOS. EOS, radiation changes influencing EOS. sum, a central focus should be placed linkages among climate, phenology, quantifying associated ecosystem function under changing climate.

Язык: Английский

Effect of climate warming on the timing of autumn leaf senescence reverses after the summer solstice DOI Creative Commons
Constantin M. Zohner, Leila Mirzagholi, Susanne S. Renner

и другие.

Science, Год журнала: 2023, Номер 381(6653)

Опубликована: Июль 6, 2023

Climate change is shifting the growing seasons of plants, affecting species performance and biogeochemical cycles. Yet how timing autumn leaf senescence in Northern Hemisphere forests will remains uncertain. Using satellite, ground, carbon flux, experimental data, we show that early-season late-season warming have opposite effects on senescence, with a reversal occurring after year's longest day (the summer solstice). Across 84% northern forest area, increased temperature vegetation activity before solstice led to an earlier onset of, average, 1.9 ± 0.1 days per °C, whereas warmer post-solstice temperatures extended duration by 2.6 °C. The current trajectories toward slowed progression affect Hemisphere-wide trends growing-season length productivity.

Язык: Английский

Процитировано

79
Impacts of climate change on vegetation phenology over the Great Lakes Region of Central Asia from 1982 to 2014 DOI
Xuan Gao, Dongsheng Zhao

The Science of The Total Environment, Год журнала: 2022, Номер 845, С. 157227 - 157227

Опубликована: Июль 7, 2022

Язык: Английский

Процитировано

47
Spatial asynchrony matters more than alpha stability in stabilizing ecosystem productivity in a large temperate forest region DOI
Xuetao Qiao, Yan Geng, Chunyu Zhang

и другие.

Global Ecology and Biogeography, Год журнала: 2022, Номер 31(6), С. 1133 - 1146

Опубликована: Март 13, 2022

Abstract Aim Understanding the biodiversity–stability relationship has become a central issue in ecology and conservation biology. Although stabilizing effects of tree species diversity on ecosystem productivity are well recorded small local communities, they remain poorly understood across scales (from to larger spatial scales). This study evaluates from large temperate forest region, considering range environmental conditions heterogeneity. Location North‐eastern China ( c . 700,000 km 2 ). Time period 2005–2017. Major taxa studied Woody plants. Methods We define stability as temporal invariability biomass productivity. Regional metacommunities representing were developed by aggregating multiple sets field plots. Simple regression analysis was used test relationships metacommunities. Piecewise structural equation modelling then disentangle abiotic variables at scales. Multiple mixed‐effects models determine relative contribution individual predictive Results found that (alpha diversity) positively related communities stability), whereas turnover space (beta asynchronous dynamics among (spatial asynchrony), regardless whether factors considered or not. also heterogeneity affected The effect asynchrony gamma greater than alpha stability. Main conclusions Our results imply is key maintaining within region. suggest diverse forests heterogeneous landscapes should be sustained buffer negative climate change degradation.

Язык: Английский

Процитировано

43
Soil moisture regulates warming responses of autumn photosynthetic transition dates in subtropical forests DOI
Yongshuo H. Fu, Xinxi Li, Shouzhi Chen

и другие.

Global Change Biology, Год журнала: 2022, Номер 28(16), С. 4935 - 4946

Опубликована: Июнь 1, 2022

Autumn phenology plays a key role in regulating the terrestrial carbon and water balance their feedbacks to climate. However, mechanisms underlying autumn are still poorly understood, especially subtropical forests. In this study, we extracted photosynthetic transition dates (APTD) China over period 2003-2017 based on global, fine-resolution solar-induced chlorophyll fluorescence (SIF) dataset (GOSIF) using four fitting methods, then explored temporal-spatial variations of APTD its partial correlation analysis machine learning methods. We further predicted shifts under future climate warming conditions by applying process-based learning-based models. found that was significantly delayed, with an average rate 7.7 days per decade, during 2003-2017. Both methods revealed soil moisture primary driver responsible for changes southern monsoon evergreen forest (SEF) middle (MEF), whereas solar radiation controlled northern evergreen-broadleaf deciduous mixed (NMF). Combining effects temperature, radiation, delayed trend 2030-2100 period, but amplitude (0.8 decade) much weaker than addition, outperformed models projecting APTD. Our findings generate from different highlight is one players determining phenological processes To comprehensively understand processes, in-situ manipulative experiments urgently needed quantify contributions environmental physiological factors plants' response ongoing change.

Язык: Английский

Процитировано

41
Warming promotes divergent shift in sequential phenophases of alpine meadow plants DOI
Yaya Chen, Xiangrong Yang,

Tianwu Zhang

и другие.

Agricultural and Forest Meteorology, Год журнала: 2025, Номер 368, С. 110521 - 110521

Опубликована: Апрель 8, 2025

Язык: Английский

Процитировано

1
Review of vegetation phenology trends in China in a changing climate DOI
Jing Zhang, Shouzhi Chen, Zhaofei Wu

и другие.

Progress in Physical Geography Earth and Environment, Год журнала: 2022, Номер 46(6), С. 829 - 845

Опубликована: Ноя. 27, 2022

Vegetation phenology is sensitive to climate change and has been defined as the footprint of ongoing change. Previous studies have shown that spatial difference in China’s vegetation varies substantially both spring autumn. Here, we reviewed phenological dynamics at national regional scale China over period 1982−2020 using a remote sensing-based dataset meta-analysis from China. We also explored underlying mechanisms autumn discussed potential under future conditions. found that, past four decades, advanced rate 0.23 ± 0.47 days/year, while was delayed 0.17 0.46 days/year. This led an extended growth season approximately 5 days per decade. The trends were spatially specific Northern region, Northwest Qinghai–Tibet Southern region: −0.16, −0.46, −0.18, −0.13 respectively, 0.02, 0.32, 0.09, 0.28 respectively. dominant climatic drivers changes. temperature factor for cold regions, precipitation, radiation, co-determined warm regions. affected by all three environmental cues but effect larger than radiation precipitation across In warming conditions, recommend focus on feedback mechanisms, such hydrological effects changes, agricultural investigate its fundamental role crop productivity, especially extreme events, ensure food security ecological security.

Язык: Английский

Процитировано

26
Influences of Shifted Vegetation Phenology on Runoff Across a Hydroclimatic Gradient DOI Creative Commons
Shouzhi Chen, Yongshuo H. Fu, Xiaojun Geng

и другие.

Frontiers in Plant Science, Год журнала: 2022, Номер 12

Опубликована: Янв. 4, 2022

Climate warming has changed vegetation phenology, and the phenology-associated impacts on terrestrial water fluxes remain largely unquantified. The are linked to plant adjustments responses climate change can be different in hydroclimatic regions. Based remote sensing data observed river runoff of hydrological station from six basins across a gradient northeast southwest China, relative contributions (including spring autumn growing season length (GSL), gross primary productivity) climatic factors affecting runoffs over 1982-2015 were investigated by applying gray relational analysis (GRA). We found that average GSLs humid regions (190-241 days) longer than semi-humid (186-192 days), consistently extended 4.8-13.9 days period basins. extensions mainly delayed phenology advanced Across all basins, GRA results showed precipitation (r = 0.74) soil moisture 0.73) determine runoffs, (VFs) especially also affected (spring phenology: r 0.66; GSL: 0.61; 0.59), even larger contribution temperature 0.57), but its importance is region-dependent. Interestingly, main VF region for reduction, while both growth VFs region, because large delay less supply capacity amplify effect phenology. This article reveals diverse linkages between VFs, regions, provides insights influences ecohydrology process depending local conditions, which improve our understanding change.

Язык: Английский

Процитировано

24
Autumn canopy senescence has slowed down with global warming since the 1980s in the Northern Hemisphere DOI Creative Commons
Yichen Zhang, Songbai Hong, Qiang Liu

и другие.

Communications Earth & Environment, Год журнала: 2023, Номер 4(1)

Опубликована: Май 19, 2023

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 this influence usually reversed later summer early autumn. Interestingly, greening causes canopy appear compared an advancing trend after eliminating effect. This finding suggests may counteract intrinsic changes autumnal leaf senescence. Our analysis behavior provides reliable guidance for developing parameterizing land surface models contain interactive dynamic module placement coupled Earth System Models.

Язык: Английский

Процитировано

16
Photoperiod drives cessation of wood formation in northern conifers DOI

Wenhuan Mu,

Xiuchen Wu, J. Julio Camarero

и другие.

Global Ecology and Biogeography, Год журнала: 2023, Номер 32(4), С. 603 - 617

Опубликована: Фев. 19, 2023

Abstract Aims Shifts in xylem phenology directly determine the forest capacity for carbon sequestration. However, a systematic understanding of spatial patterns and underpinning drivers determining cessation wood formation ( C cw ) is lacking at pan‐continental scale. Here, we addressed this knowledge gap by compiling new dataset multiple timings northern conifers. Locations Sixty‐two study sites, Northern Hemisphere (25–55° N). Time period 2003–2018 (16 years). Taxa Thirty‐three conifer species. Methods A generalized additive model was fitted to characterize latitudinal pattern . Structural equation modelling linear mixed‐effects were applied main underlying Results The followed flat S‐shaped with increasing latitude. Photoperiod dominant determinant , longer photoperiod associated an earlier Both mean growing‐season temperature total precipitation exhibited significantly positive relationships cell elongation thus across all sites. In arid regions, pre‐growing‐season had negative effect on humid positively affected temperature. onset showed coupling sites but not Early successional species sensitive hydrothermal variations during pre‐growing season. Main conclusions We reveal role conifers highlight differentiated interactive effects between seasonal climatic factors preceding phenophases among ecoregions tree These insights provide evidence reduce uncertainty prediction uptake potential consequent biophysical feedbacks forests.

Язык: Английский

Процитировано

15
Understanding vegetation phenology responses to easily ignored climate factors in china's mid-high latitudes DOI Creative Commons
Qianfeng Wang,

Huixia Chen,

Feng Xu

и другие.

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Апрель 16, 2024

Abstract Previous studies have primarily focused on the influence of temperature and precipitation phenology. It is unclear if easily ignored climate factors with drivers vegetation growth can effect In this research, we conducted an analysis start (SOS) end (EOS) growing seasons in northern region China above 30°N from 1982 to 2014, focusing two-season We examined response phenology different types preseason climatic factors, including relative humidity (RH), shortwave radiation (SR), maximum (Tmax), minimum (Tmin). Our findings reveal that optimal influencing length fell within range 0–60 days most areas. Specifically, SOS exhibited a significant negative correlation Tmax Tmin 44.15% 42.25% areas, respectively, while EOS displayed SR 49.03% Additionally, identified RH emerged as dominant factor savanna (SA), whereas strongly controlled deciduous needleleaf forest (DNF) broadleaf (DBF). Meanwhile, DNF was influenced by Tmax. conclusion, study provides valuable insights into how various adapt change, offering scientific basis for implementing effective adaptation measures.

Язык: Английский

Процитировано

6