Modeling of the Cascading Impacts of Drought and Forest Fire Based on a Bayesian Network DOI
Fang Chen, Huicong Jia,

Enyu Du

et al.

Published: Jan. 1, 2023

The cascading impact of disastrous events has become an important focus disaster research. In recent years, forest fires have occurred frequently in China, causing huge economic losses. Studying the impacts drought and fire is great significance for reducing risks. Taking Yunnan Province China as example, meteorological data point from 2005 to 2018 were collected statistically analyzed. A Bayesian network model was established, enabling prior probability conditional nodes be determined. Based on this information, a prediction established using causal reasoning. Finally, case test, Brier score used test accuracy model. value 0.305, which less than qualified threshold 0.6. results indicated that study had good performance, basically consistent with facts. provide insight into mechanism by induced occur will use prevention work.

Language: Английский

Temporal–Spatial Dynamics and Collaborative Effects of Cropland Resilience in China DOI Creative Commons
Liang Luo, Yetong Li, Wenjie Ma

et al.

Land, Journal Year: 2025, Volume and Issue: 14(1), P. 108 - 108

Published: Jan. 8, 2025

Cropland resilience is the ability of cropland systems to adapt and rebound from multiple stresses disturbances. vital for ensuring national food security, promoting sustainable agricultural development, adapting global climate change. This study measures in China using entropy method within PSR framework. Additionally, it employs quantitative analysis methods, including kernel density estimation, standard deviation ellipse, Theil Index, geographical detector, systematically examine spatiotemporal dynamics its driving factors China. The findings reveal evolving trends over time space, highlighting regional differences spatial distribution resilience. found following: (1) overall shows an upward trend, but there uneven development among regions, particularly relatively lagging western areas. (2) There a notable imbalance resilience, primarily driven by intra-regional differences. (3) Stability Grain Production; Total Fiscal Expenditure on Agriculture, Forestry, Water; Soil–Water Harmony; Disaster Resistance Index are identified as key factors, with influence notably increasing time. (4) highlights critical role synergistic effects these enhancing noting significant strengthening synergies research results offer fresh perspective dynamic environments. They enhance our understanding characteristics underlying processes, provide scientific basis policymaking aimed at use management cropland.

Language: Английский

Citations

1

Spatial and Temporal Assessment of Drought Hazard, Vulnerability and Risk in Three Different Climatic Zones in Algeria Using Two Commonly Used Meteorological Indices DOI Open Access
Nadjib Haied, Atif Foufou, Samira Khadri

et al.

Sustainability, Journal Year: 2023, Volume and Issue: 15(10), P. 7803 - 7803

Published: May 10, 2023

Drought is considered a natural hazard and has become recurrent phenomenon in Algeria since the 1970s. characterized by three different climates, namely, sub-humid, semi-arid arid climates. In this study, we aimed to spatiotemporally assess drought hazard, vulnerability risk climates of sub-basins, Seybouse Maritime, Wadi Djelfa-Hadjia M’Zi sub-basins. To end, standardized precipitation index (SPI) reconnaissance (RDI) were used evaluate physical characteristics on 12-month timescale, based temperature monthly data covering period 1979–2019. High values coefficient determination (R2) (0.76–0.99) confirmed low root-mean-square error (RMSE) (0.08–0.49) proved that indices displayed high correlation. evaluated socioeconomic aspects, respectively. The results led correlation between two used; main events; mapping using geographic information system (GIS). These findings suggest SPI provided highest intensities, while longest periods strongest magnitudes given RDI. spatiotemporal distributions varied with time from station sub-basin sub-basin. Risk maps revealed factors controls risk.

Language: Английский

Citations

13

Drought‐Induced Vertical Displacements and Water Loss in the Po River Basin (Northern Italy) From GNSS Measurements DOI Creative Commons
Francesco Pintori, Enrico Serpelloni

Earth and Space Science, Journal Year: 2024, Volume and Issue: 11(3)

Published: March 1, 2024

Abstract We study vertical ground displacement time series from Global Navigation Satellite System (GNSS) stations to measure deformation associated with hydrological drought in the Po river basin. Focusing on interannual trend changes, rather than seasonal (annual) components, we found a clear spatially correlated signal that is temporally (anti)correlated changes level and SPEI‐12 index, moving upward during periods of river/index decrease vice versa. In 2021–2022 span, which culminated most severe last two centuries, estimate amount spatial distribution water loss basin its surroundings. Excluding signals, between January 2021 August 2022, GNSS underwent uplift, up 7 mm, corresponds ∼70 Gtons loss. Compared Land Data Assimilation Gravity Recovery Climate Experiment estimates, results show similar temporal evolution content but more heterogeneous values. continuous networks provide an effective way monitor multiannual storage even small basins serve as reliable indicator severity.

Language: Английский

Citations

4

Spatiotemporal Heterogeneity of Long-Term Irrigation Effects on Drought in China’s Arid and Humid Regions DOI Creative Commons

Enyu Du,

Fang Chen, Huicong Jia

et al.

Remote Sensing, Journal Year: 2025, Volume and Issue: 17(7), P. 1115 - 1115

Published: March 21, 2025

Analyzing the spatiotemporal characteristics of meteorological droughts (MD) and agricultural (AD) their propagation in different climate zones is important for effective drought management, adaptation, food security. This study takes a unique approach by comparing irrigated rainfed croplands. A comprehensive framework developed using indices, statistical analysis, trend tests, wavelet transforms. The evolution patterns, trends, correlations MD AD Xinjiang Middle-lower Yangtze Plain (MYP) are investigated. main results showed that severe events (e.g., 2005–2009 MYP 2004–2009) significantly impacted systems, leading to decline vegetation condition. Long-term irrigation can substantially alleviate under conditions. From 2000 2019, on croplands continuously improved, while deteriorated during events. In contrast, although overall was mitigated, benefits were only evident periods weakened after 2013. Correlation analyses revealed mechanisms between croplands, highlighting key role local conditions spatial heterogeneity determining efficiency. findings provide guidance optimizing management strategies, planning, sustainable water resource management.

Language: Английский

Citations

0

Advancing sustainable agricultural: A novel framework for mapping annual 30-m resolution national-level irrigated croplands DOI

Enyu Du,

Meimei Zhang, Huicong Jia

et al.

International Journal of Applied Earth Observation and Geoinformation, Journal Year: 2025, Volume and Issue: 140, P. 104589 - 104589

Published: May 16, 2025

Language: Английский

Citations

0

Analysis of Agricultural Drought Evolution Characteristics and Driving Factors in Inner Mongolia Inland River Basin Based on Three-Dimensional Recognition DOI Open Access
Zezhong Zhang,

Hengzhi Guo,

Kai Feng

et al.

Water, Journal Year: 2024, Volume and Issue: 16(3), P. 440 - 440

Published: Jan. 29, 2024

Agricultural drought events have become more frequent in the Inner Mongolia inland river basin recent years, and spatio-temporal evolution characteristics development rules can be accurately comprehensively understood using three-dimensional identification method. In this paper, standardized soil moisture index (SSMI) was used to characterize agricultural drought, modified Mann–Kendall trend test (MMK) 3D recognition of were analyze reveal law. The relationships between temperature (T), precipitation (P), evapotranspiration (E), humidity (H) analyzed a cross-wavelet results are as follows: (1) When time scale short (monthly scale), alternations dry wet frequent, but SSMI all scales showed downward trend; (2) spatial distribution change four seasons similar, area with significant spring largest, high frequency region also most obvious; (3) serious event occurred from October 2000 May 2002, reached its maximum value September 2001 (drought severity 2.26 × 105 km2 3.61 months·km2, respectively), which mainly experienced five processes—drought onset–intensification–decay–re-intensification–termination—and migration path center southwest–northeast transmission; (4) All meteorological factors correlated SSMI, P had greater impact on SSMI. This article aims basin, provide new way evaluate drought.

Language: Английский

Citations

3

Modeling of the Cascading Impacts of Drought and Forest Fire Based on a Bayesian Network DOI Creative Commons
Fang Chen, Huicong Jia,

Enyu Du

et al.

International Journal of Disaster Risk Reduction, Journal Year: 2024, Volume and Issue: 111, P. 104716 - 104716

Published: Aug. 3, 2024

The cascading impact of disastrous events has become an important focus disaster research. In recent years, forest fires have occurred frequently in China, causing huge economic losses. Studying the impacts drought and fire is great significance for reducing risks. Taking Yunnan Province China as example, meteorological data point from 2005 to 2018 were collected statistically analyzed. A Bayesian network model was established, enabling prior probability conditional nodes be determined. Based on this information, a prediction established using causal reasoning. Finally, case test, Brier score used test accuracy model. value 0.305, which less than qualified threshold 0.6. results indicated that study had good performance, basically consistent with facts. provide insight into mechanism by induced occur will use prevention work.

Language: Английский

Citations

3

Spatiotemporal Variation Characteristics of Reference Evapotranspiration and Relative Moisture Index in Heilongjiang Investigated through Remote Sensing Tools DOI Creative Commons

Siyi Wen,

Zihan Liu, Yu Han

et al.

Remote Sensing, Journal Year: 2023, Volume and Issue: 15(10), P. 2582 - 2582

Published: May 15, 2023

Reference evapotranspiration (ET0) is one of the significant parameters in agricultural irrigation, especially Heilongjiang, a big province China. In this research, spatiotemporal variation characteristics (ET), relative moisture index (MI) and influencing factors ET0 which was divided into six ecology districts according to landforms, were analyzed with meteorological data observed over 40 years from 1980 MOD16 products 2000 2017 using Morlet wavelet analysis partial correlation analysis. The results indicated that (1) spatial distribution ET PET Heilongjiang humid, normal arid showed being higher southwest lower northwest, south north. than 2002 2017, difference small, indicating overall sufficient these years. (2) last years, increased while annual MI decreased. minimum regions −0.25, showing all drought free. (3) importance affecting ranked as average humidity > wind speed sunshine duration. This research provides scientific guidance for study remote sensing reverse ET.

Language: Английский

Citations

4

Modeling and Application of Drought Monitoring with Adaptive Spatial Heterogeneity Using Eco–Geographic Zoning: A Case Study of Drought Monitoring in Yunnan Province, China DOI Open Access
Quanli Xu, Shan Li,

Junhua Yi

et al.

Water, Journal Year: 2024, Volume and Issue: 16(17), P. 2500 - 2500

Published: Sept. 3, 2024

Drought, characterized by frequent occurrences, an extended duration, and a wide range of destruction, has become one the natural disasters posing significant threat to both socioeconomic progress agricultural livelihoods. Large-scale geographical environments often exhibit obvious spatial heterogeneity, leading differences in drought’s development outcomes. However, traditional drought monitoring models have not taken into account impact regional heterogeneity on drought, resulting evaluation results that do match actual situation. In response above-mentioned issues, this study proposes establishment ecological–geographic zoning adapt spatially stratified heterogeneous characteristics large-scale monitoring. First, based principles ecological zoning, appropriate index system was selected carry out for Yunnan Province. Second, using data from NASA’s Moderate Resolution Imaging Spectroradiometer (MODIS) Tropical Rainfall Measuring Mission (TRMM) 3B43, vegetation condition (VCI), temperature (TCI), precipitation (TRCI), three topographic factors including digital elevation model (DEM), slope (SLOPE), aspect (ASPECT) were as parameters. Multiple linear regression then used establish integrated frameworks at different eco–geographical scales. Finally, standardized evapotranspiration (SPEI) evaluate effects model, spatiotemporal variation patterns winter spring droughts Province 2008–2019 further analyzed. The show (1) compared non-zonal models, constructed higher correlation greater accuracy with SPEI (2) experiences periodic seasonal patterns, being peak period occurrence moderate light main types Therefore, we believe can better characteristics, zonal more effectively identify large regions. This research finding provide reference formulation policies

Language: Английский

Citations

0

Assessing drought trends and vegetation health in arid regions using advanced remote sensing techniques: a case study in Saudi Arabia DOI
Saeed Alqadhi, Javed Mallick, Hoang Thi Hang

et al.

Theoretical and Applied Climatology, Journal Year: 2024, Volume and Issue: 156(1)

Published: Dec. 18, 2024

Language: Английский

Citations

0