Atmospheric Environment, Journal Year: 2025, Volume and Issue: unknown, P. 121177 - 121177
Published: March 1, 2025
Language: Английский
Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)
Published: Feb. 28, 2023
Abstract Since the early 2000s, China has carried out extensive “grain-for-green” and grazing exclusion practices to combat desertification in desertification-prone region (DPR). However, environmental socioeconomic impacts of these remain unclear. We quantify compare changes fractional vegetation cover (FVC) with economic population data DPR before after implementation programmes. Here we show that climatic change CO 2 fertilization are relatively strong drivers rehabilitation from 2001-2020 DPR, declines direct incomes farmers herders caused by ecological exceed subsidies provided governments. To minimize hardship, enhance food security, improve returns on policy investments needs adapt its programmes address potential future climate create positive synergies economy this region.
Language: Английский
Citations
124
Earth s Future, Journal Year: 2025, Volume and Issue: 13(1)
Published: Jan. 1, 2025
Abstract Ecological restoration efforts in less developed regions confront a sustainability challenge due to the undervaluation of their substantive benefits. Soil conservation, as crucial ecosystem service supporting both ecological and socioeconomic systems regions, is often overlooked estimating benefits efforts. We introduce framework that integrates multi‐model approach scenario analysis on cloud computing platforms capture significance soil conservation by assessing world's largest programs from China. Our reveals these programs, with total investment $133 billion, have prevented 7.29 ± 1.01 Pg erosion, valued at $243.0 25.9 billion 2000 2019. Notably, two critical synergize forest cropland conversion, human well‐being China's account for approximately 85% findings underscore significantly enhance prioritization reinforcing potential global contribute sustainable future.
Language: Английский
Citations
2
npj Climate and Atmospheric Science, Journal Year: 2024, Volume and Issue: 7(1)
Published: Jan. 2, 2024
Abstract Dust aerosols significantly affect the Earth’s climate, not only as a source of radiation, but also ice nuclei, cloud condensation nuclei and thus CO 2 exchange between atmosphere ocean. However, there are large deviations in dust model simulations due to limited observations on global scale. Based ten initial Climate Models Intercomparison Project Phase Six (CMIP6) models, multi-model ensemble (MME) approximately underestimates future changes mass loading (DML) by 7–21%, under four scenarios shared socioeconomic pathways (SSPs). Therefore, this study primarily constrains CMIP6 various emission applying an equidistant cumulative distribution function (EDCDF) method combined with Modern-Era Retrospective Analysis for Research Applications version (MERRA2) datasets based observation assimilation. We find that results (19.0–26.1 Tg) 2000–2014 closer MERRA2 (20.0–24.8 than (4.4–37.5 Tg), deviation reduced up 75.6%. emphasize DML during 2081–2100 is expected increase 0.023 g m –2 North Africa Atlantic region, while decreasing 0.006 Middle East Asia. In comparison internal variability scenario uncertainty, uncertainty accounts more 70% total uncertainty. When bias correction applied, decreases 65% 90%, resulting similar variance contribution variability.
Language: Английский
Citations
14
Earth s Future, Journal Year: 2024, Volume and Issue: 12(3)
Published: March 1, 2024
Abstract Grassland provides multiple ecosystem services and plays a key role in preventing desert encroachment maintaining oasis stability. In China, the area of cropland oases has expanded significantly recent decades, which results rapid increase agricultural water demand on grassland subsistence space. However, our knowledge about how expansion affects grasslands remains limited. We used machine learning, temporal segmentation spectral trajectories, maximum covariance analysis to generate an annual aboveground biomass (AGB) data set at 30‐m resolution from 1989 2021 based remotely sensed ground observation sets, investigated dynamics AGB under oases. found that overall increased (0.3 gm −2 yr −1 , P < 0.01) during 1989–2021, but trends were not consistent across basins. Yellow River, Turpan Hami, Qaidam, southern Altai Mountains River Basins, was dominated by significant increase. Conversely, all basins Xinjiang, showed decreasing trend due expansion. Spatially, strongly coupled. regions characterized concentration, benefitted resource spillover via edge effects. downstream areas or those with low proportion cropland, where most are distributed, relationship between two shifted trade‐off. Our study scientific basis for identifying priority ecological restoration science‐based planning scale
Language: Английский
Citations
8
npj Climate and Atmospheric Science, Journal Year: 2025, Volume and Issue: 8(1)
Published: Feb. 15, 2025
Language: Английский
Citations
1
Geophysical Research Letters, Journal Year: 2024, Volume and Issue: 51(4)
Published: Feb. 12, 2024
Abstract Airborne mineral dust is sensitive to climatic changes, but its response orbital forcing still not fully understood. Here, we present a reconstruction of input the Subarctic Pacific Ocean covering past 190 kyr. The composition record indicative source moisture conditions, which were dominated by precessional variations. In contrast, flux obliquity variations and displays an out‐of‐phase relationship with from mid‐latitude North Ocean. Climate model simulations suggest precession likely drove changes in aridity extent regions. Additionally, can be explained meridional shifts westerly jet, driven atmospheric temperature gradient. Overall, our findings that was primarily modulated orbital‐controlled strength position winds.
Language: Английский
Citations
7
Earth-Science Reviews, Journal Year: 2023, Volume and Issue: 242, P. 104451 - 104451
Published: May 18, 2023
Language: Английский
Citations
13
Atmospheric Environment, Journal Year: 2024, Volume and Issue: 327, P. 120492 - 120492
Published: April 2, 2024
Language: Английский
Citations
5
Earth system science data, Journal Year: 2024, Volume and Issue: 16(9), P. 4351 - 4387
Published: Sept. 26, 2024
Abstract. A new long-term emission inventory called the Inversed Emission Inventory for Chinese Air Quality (CAQIEI) was developed in this study by assimilating surface observations from China National Environmental Monitoring Centre (CNEMC) using an ensemble Kalman filter (EnKF) and Nested Prediction Modeling System. This contains constrained monthly emissions of NOx, SO2, CO, primary PM2.5, PM10, non-methane volatile organic compounds (NMVOCs) 2013 to 2020, with a horizontal resolution 15 km × km. paper documents detailed descriptions assimilation system evaluation results inventory. The suggest that CAQIEI can effectively reduce biases priori inventory, normalized mean ranging −9.1 % 9.5 posteriori simulation, which are significantly reduced simulations (−45.6 93.8 %). calculated root-mean-square errors (RMSEs) (0.3 mg m−3 CO 9.4–21.1 µg m3 other species, on scale) correlation coefficients (0.76–0.94) were also improved simulations, demonstrating good performance data system. Based CAQIEI, we estimated China's total (including both natural anthropogenic emissions) six species 2015 be as follows: 25.2 Tg 17.8 465.4 15.0 40.1 46.0 NMVOCs. From decreased 54.1 44.4 33.6 35.7 15.1 NOx but increased 21.0 It is reductions larger during 2018–2020 (from −26.6 −4.5 %) than 2015–2017 −23.8 27.6 most species. In particular, NMVOC shown increase 2015–2017, especially over Fenwei Plain area (FW), where particulate matter (PM) increased. situation changed 2018–2020, when upward trends contained reversed downward NMVOCs PM FW. suggests control policies may action plan. We compared air pollutant inventories China, verified our inversion terms more importantly identified potential uncertainties current inventories. Firstly, suggested higher (426.8 Tg) being twice amounts previous (120.7–237.7 Tg). Significantly western northeastern pollutants. Secondly, about 30.4 %–81.4 North (NCP) lower %–0.0 southeastern (SE). Thirdly, reduction rates 2015–2018 except CO. have 26.6 2018, NCP (by 38.0 %), 38.3 central (60.0 These provide us insights into complex variations two recent clean-air actions, has improve understanding their impacts quality. All datasets available at https://doi.org/10.57760/sciencedb.13151 (Kong et al., 2023a).
Language: Английский
Citations
5
Land Degradation and Development, Journal Year: 2024, Volume and Issue: 35(8), P. 2800 - 2812
Published: March 11, 2024
Abstract Land cover is a key factor affecting dust emissions. Substantial changes in land have occurred due to human activities and climate change northern China. However, the extent which these influence emissions still controversial. Here, we explored specific impact of use type transformation on between 2000 2020 by using Weather Research Forecasting model coupled with Chemistry (WRF‐Chem) from perspective changes. Two scenarios were set up compared quantify this impact. One scenario was data 2000, other 2020. Both driven initial meteorological conditions Results indicated that reduced China, but weakened intensity showed obvious spatial differences. Different conversion types had significant differences their Transforming bare areas water bodies can reduce −3.62 g m −2 year −1 . This followed sparse vegetation areas, decrease −2.9 , then cropland, reduction −2.57 These findings offer methodologies support for quantitative evaluation effects They also serve as reference environmental management when formulating policies.
Language: Английский
Citations
4