The role of climatic factor timing on grassland net primary productivity in Altay, Xinjiang DOI Creative Commons
Bojian Chen,

Guli Jiapaer,

Yu Tao

et al.

Ecological Indicators, Journal Year: 2023, Volume and Issue: 157, P. 111243 - 111243

Published: Nov. 16, 2023

Grassland, as highly vulnerable ecosystem, requires a comprehensive understanding of its dynamics and response patterns to climate factors in change challenges. While previous research has primarily centered on the influence interannual variability grassland Net Primary Productivity (NPP), knowledge impacts seasonal or monthly variations annual net primary productivity (ANPP) remains limited. This study investigated climatic drivers NPP Xinjiang's Altay region from 2000 2022 using Carnegie-Ames-Stanford approach (CASA) model random forest regression model. The examined significance precipitation, solar radiation, temperature, soil moisture, snowmelt water at three temporal scales. results revealed following key findings: (1) Grassland declined significantly 2009 but showed gradual increase 2022. Spatially, higher values were observed northern lower southern region. (2) Precipitation was influential factor affecting NPP, followed by water. In determining timing ANPP, June played critical role particularly for while August essential radiation. Moreover, importance had bimodal distribution, with peaks April October. (3) exhibited diverse nonlinear spatial heterogeneity various different These findings highlight considering both magnitude local conditions, well when studying dynamic responses predicting future impacts. insights enhance comprehension intricate ecosystems predictions their change.

Language: Английский

Disaster effects of climate change and the associated scientific challenges DOI
Yan Wang, Hao Wang, Peng Cui

et al.

Chinese Science Bulletin (Chinese Version), Journal Year: 2023, Volume and Issue: 69(2), P. 286 - 300

Published: July 24, 2023

Language: Английский

Citations

13
Surface air temperature changes over the Tibetan Plateau: Historical evaluation and future projection based on CMIP6 models DOI Creative Commons
Rui Chen,

Haoying Li,

Xuejia Wang

et al.

Geoscience Frontiers, Journal Year: 2022, Volume and Issue: 13(6), P. 101452 - 101452

Published: Aug. 6, 2022

With its amplification simultaneously emerging in cryospheric regions, especially the Tibetan Plateau, global warming is undoubtedly occurring. In this study, we utilized 28 climate models to assess model performance regarding surface air temperature over Plateau from 1961 2014, reported spatiotemporal variability future under four scenarios (SSP1-2.6, SSP2-4.5, SSP3-7.0, and SSP5-8.5), further quantified timing of levels (1.5, 2, 3 °C) region. The results show that multimodel ensemble means depicted patterns for past decades well, although with differences across individual models. projected temperature, by 2099, would warm 1.9, 3.2, 5.2, 6.3 °C relative reference period (1981–2010), increasing rates 0.11, 0.31, 0.53, 0.70 °C/decade SSP1-2.6, SSP5-8.5 2015–2099, respectively. Compared preindustrial periods (1850–1900), mean annual has hit 1.5 threshold will break 2 next decade, but there still a chance limit below century. Our study provides new understanding high mountain areas implies urgent need achieve carbon neutrality.

Language: Английский

Citations

20
Detection and attribution of trends in flood frequency under climate change in the Qilian Mountains, Northwest China DOI Creative Commons
Xueliang Wang, Rensheng Chen, Hongyuan Li

et al.

Journal of Hydrology Regional Studies, Journal Year: 2022, Volume and Issue: 42, P. 101153 - 101153

Published: June 27, 2022

The Qilian Mountains, Northwest China Trends in flood frequency and their driving factors must be analyzed to enable the effective management of water resources inland rivers originating mountains (QMs). Based on hydrological station datasets from 12 typical with annual maximum peak discharge peaks-over-threshold (POT) series for period 1970–2019, spatial temporal variations flooding were detected using a linear regression estimator Mann–Kendall trend tests. results indicate that POT floods during 1970–2019 showed an increasing at 90% significance level, small decreasing trends medium large floods. Flood levels varied east west across region, overall east, increase central rivers, significant increases both west. Both temperature precipitation increased after 1987, summer was significantly increased; as result, most 1980 s, decreases spring autumn summer. main causes changes found heavy rainfall, abnormal warming, accelerated glacial melting.

Language: Английский

Citations

19
Spatiotemporal evolution of multiple time scale precipitation in Yellow River Basin based on Köppen-Geiger Trend Indicator System DOI Creative Commons
Hao Ke, Wenzhuo Wang, Zengchuan Dong

et al.

Journal of Hydrology Regional Studies, Journal Year: 2025, Volume and Issue: 58, P. 102226 - 102226

Published: Feb. 8, 2025

Language: Английский

Citations

0
Characteristics of the spatiotemporal differences in snowmelt phenology in the Northern Hemisphere DOI
Xiaoyu Li, Haoming Fan

Journal of Hydrology Regional Studies, Journal Year: 2025, Volume and Issue: 59, P. 102358 - 102358

Published: April 10, 2025

Language: Английский

Citations

0
Coupling regulation of water and fertilizer in cold farmland of Harbin, Heilongjiang, China, based on resource-benefit-environment synergy DOI
Yingshan Chen, Yaowen Xu, Aizheng Yang

et al.

Journal of Hydrology Regional Studies, Journal Year: 2025, Volume and Issue: 59, P. 102392 - 102392

Published: May 1, 2025

Language: Английский

Citations

0
Hydrological response to future climate change in a mountainous watershed in the Northeast of Tibetan Plateau DOI Creative Commons

Zexia Chen,

Rui Zhu,

Zhenliang Yin

et al.

Journal of Hydrology Regional Studies, Journal Year: 2022, Volume and Issue: 44, P. 101256 - 101256

Published: Nov. 10, 2022

Upper reach of the Heihe River basin (UHRB) We quantified potential changes in future climate and streamflow, as well their corresponding contribution to annual variations. And dominant factors streamflow change were explored further. Robust multivariate bias correction was applied correct outputs general circulation method (GCMs) before applying projection. The Soil Water Assessment Tool model explore characteristics under projection bias-corrected GCMs four representative emission scenarios (SSP1–2.6, SSP2–4.5, SSP3–7.0, SSP5–8.5). By end 21st century, will follow a warming wetting trend within basin; is projected increase by > 18 % 2030 s, 36 2050 s 2090 s. Overall, minimum temperature had positive impact on cold seasons, especially spring, contributing most increment. When greater than 5.42 °C, peak shift forward from May April. Moreover, evapotranspiration with temperature, leading decrease summer streamflow. results enable us better understand at different time scales provide guidance for development response strategies water resource management planning.

Language: Английский

Citations

17
Characterizing the kinematics of active rock glaciers in Daxue Shan, southeastern Tibetan plateau, using SAR interferometry and generalized boosted modeling DOI

Jiaxin Cai,

Xiaowen Wang, Tingting Wu

et al.

Remote Sensing of Environment, Journal Year: 2024, Volume and Issue: 313, P. 114352 - 114352

Published: Aug. 10, 2024

Language: Английский

Citations

3
Unraveling the Distinct Roles of Snowmelt and Glacier‐Melt on Agricultural Water Availability: A Novel Indicator and Its Application in a Glacierized Basin of China’s Arid Region DOI Creative Commons

Hang Zha,

Fan Zhang, Hongbo Zhang

et al.

Water Resources Research, Journal Year: 2025, Volume and Issue: 61(1)

Published: Jan. 1, 2025

Abstract Mountain runoff is a vital water source for irrigation in global arid regions. Investigating the roles of major mountain components such as snowmelt and glacier‐melt, on downstream availability important understanding resource security. Snowmelt glacier‐melt have different timing availability. However, their potentially distinct impacts supplies been seldom investigated previously. This study proposes novel indicator, Irrigation Dependence Component ( IDC ), to assess individual impact availability, considering supply, demand relationship. Applying Yarkant River basin (YRB) China’s region, mainly fed by from northern Tibetan Plateau, reveals that, despite being primary contributor total YRB, generally more reliant due seasonal variations supply/demand Further sensitivity tests under 48 climate scenarios indicate that significantly increases drier climates, while decreases warms, implying increased importance future, especially conditions during transition season. Additionally, crucial role anthropogenic factors, including changes planting area use efficiency, influencing highlighted improved estimation. provides implications how cryosphere resources management an efficient indicator further studies glacierized basins globally.

Language: Английский

Citations

0
Dynamics of snowmelt-induced erosion on typical sloping farmland in the Mollisol region of Northeast China DOI

Guopeng Wang,

Keli Zhang, Zhuodong Zhang

et al.

CATENA, Journal Year: 2025, Volume and Issue: 253, P. 108899 - 108899

Published: March 6, 2025

Language: Английский

Citations

0