Multi-index evaluation of drought conditions in Northeastern Algeria using remote sensing tool DOI
Fatima Zohra Tebbi, Ouassila Bahloul,

Abderezzaq Nouar

и другие.

STUDIES IN ENGINEERING AND EXACT SCIENCES, Год журнала: 2024, Номер 5(2), С. e11707 - e11707

Опубликована: Дек. 6, 2024

Drought is a complex natural disaster with profound impacts on environmental, social, and economic systems globally. This research investigates drought conditions in the Koudiet Mdaouar Basin, located northeastern Algeria, through comprehensive analysis of satellite-derived indicators from 2019 to 2023. Employing advanced remote sensing GIS-based methodological approaches, study systematically evaluates vegetation health, thermal stress patterns, water resource dynamics, particular focus reservoir region. The reveals significant progressive decline ecological conditions, characterized by deteriorating cover, intensified stress, severe scarcity. These findings not only highlight region's environmental vulnerability but also demonstrate intricate interplay between climatic changes local ecosystem dynamics. emphasizes necessity developing adaptive policies underscores potential integrated satellite ground-based observation techniques for more precise assessments, offering critical insights management climate resilience strategies.

Язык: Английский

Drought-tolerant wheat for enhancing global food security DOI
Abhishek Bohra, Mukesh Choudhary,

Dion Bennett

и другие.

Functional & Integrative Genomics, Год журнала: 2024, Номер 24(6)

Опубликована: Ноя. 13, 2024

Язык: Английский

Процитировано

4
Prediction of Drought Thresholds Triggering Winter Wheat Yield Losses in the Future Based on the CNN-LSTM Model and Copula Theory: A Case Study of Henan Province DOI Creative Commons

Jianqin Ma,

Yan Zhao,

Bifeng Cui

и другие.

Agronomy, Год журнала: 2025, Номер 15(4), С. 954 - 954

Опубликована: Апрель 14, 2025

As global warming progresses, quantifying drought thresholds for crop yield losses is crucial food security and sustainable agriculture. Based on the CNN-LSTM model Copula function, this study constructs a conditional probability framework under future climate change. It analyzes relationship between Standardized Precipitation–Evapotranspiration Index (SPEI) winter wheat yield, assesses vulnerability of in various regions to stress, quantifies The results showed that (1) SPEI Zhoukou, Sanmenxia, Nanyang was significantly correlated with yield; (2) southern eastern higher than center, western, northern past (2000–2023) (2024–2047); (3) there were significant differences thresholds. loss below 30, 50, 70 percentiles (past/future) −1.86/−2.47, −0.85/−1.39, 0.60/0.35 (Xinyang); −1.45/−2.16, −0.75/−1.34, −0.17/−0.43 (Nanyang); −1.47/−2.24, −0.97/−1.61, 0.69/0.28 (Zhoukou); −2.18/−2.86, −1.80/−2.36, −0.75/−1.08 (Kaifeng), indicating threshold will reduce future. This mainly due different soil conditions Henan Province. In context change, droughts be more frequent. Hence, research provide valuable reference efficient utilization agricultural water resources prevention control risk change

Язык: Английский

Процитировано

0
Hazard assessment of compound drought and heat events on summer maize from agricultural and meteorological perspectives DOI Creative Commons
Qing Li, Peijuan Wang, Yang Li

и другие.

Agricultural Water Management, Год журнала: 2025, Номер 313, С. 109479 - 109479

Опубликована: Апрель 19, 2025

Язык: Английский

Процитировано

0
Construction of Indicators of Low-Temperature Stress Levels at the Jointing Stage of Winter Wheat DOI Creative Commons
Fengyin Zhang,

Zhiguo Huo,

Zaiqiang Yang

и другие.

Agriculture, Год журнала: 2024, Номер 14(8), С. 1430 - 1430

Опубликована: Авг. 22, 2024

This study aimed to investigate the impact of low-temperature (LT) stress during jointing stage on three most representative wheat varieties in Huang-Huai-Hai region: “Shannong 38” (a robust winter variety), “Jimai 22” semi-winter and “Zhenmai 12” weak variety). The objective was explain sensitivity change thresholds various physiological yield indicators low temperatures construct an index for grading LT disasters using principal component analysis. Controlled environment experiments were conducted artificial climate chamber wheat. Five daily minimum temperature treatments applied, namely (T1, −6 °C); (T2, −3 (T3, 0 (T4, 3 (T5, 6 control (CK, 8 °C). duration divided into levels: (D1: 2 days), (D2: 4 (D3: days). It found that photosynthetic parameters chlorophyll content showed a decreasing trend with increase degree stress. activities protective enzymes endogenous hormones increased early stages or at relatively high temperatures. However, they decreased significantly Among varieties, exhibited reduction rate exceeding 10% under °C more than days 20% days. lasting days, experienced Principal analysis (PCA) all trait revealed mild moderate severe

Язык: Английский

Процитировано

2
Propagation Characteristics and Influencing Factors of Meteorological Drought to Soil Drought in the Upper Reaches of the Shiyang River Based on the Copula Function DOI Creative Commons
Junju Zhou,

Anning Gou,

Shizhen Xu

и другие.

Land, Год журнала: 2024, Номер 13(12), С. 2050 - 2050

Опубликована: Ноя. 29, 2024

Drought propagation is a complex process, and understanding the mechanisms of meteorological drought to soil crucial for early warning, disaster prevention, mitigation. This study focuses on eight tributaries in upper reaches Shiyang River. Based Standardized Precipitation Index (SPI) Soil Moisture (SSMI), Propagation Intensity (DIP) Copula function were applied quantify intensity time from explored patterns at different temporal spatial scales these tributaries. Results showed that, 0–10 cm layer, was peer-to-peer, with one month. In middle (10–40 cm) deep (40–100 layers, characteristics differed between eastern western The experienced stronger shorter times (2–4 months), while exhibited peer-to-peer longer (4–10 months). large areas forests grasslands River contributed strong land–atmosphere interactions, leading layer. had extensive cultivated land, where irrigation during enhanced moisture, resulting layers. contrast, tributaries, larger forest widespread permafrost, high water consumption limited recharge 10–40 40–100 propagation.

Язык: Английский

Процитировано

2
Research on Meteorological Drought Risk Prediction in the Daqing River Basin Based on HADGEM3-RA DOI Creative Commons
Mingcong Lv, Zhongmei Wang

Agriculture, Год журнала: 2024, Номер 14(10), С. 1781 - 1781

Опубликована: Окт. 10, 2024

Climate change is altering the water cycle and increasing drought risks in river basins. However, few studies account for minor droughts, despite their limited environmental impact. This study uses a pooling exclusion method to remove effects of droughts on identification events analyze characteristics Daqing River Basin (DRB) using HADGEM3-RA model within an Exposure–Resilience–Vulnerability (ERV) framework. It finds that duration number are sensitive rates. Drought severity also Pooling lead fewer but longer more severe droughts. Future DRB projected become severe, with durations averaging up 7 months from 0.2 4.3. peak expected exceed 1.28, development relief periods extending 0.68 0.69 months, respectively. Risk levels basin rise I II–IV, RCP4.5 scenarios showing higher than RCP8.5. Mountainous areas will face compared plains. Initially, risk factors increase then decline over time. These findings clarify dynamics changes under climate change. They can help developing climate-resilient strategies disaster reduction similar

Язык: Английский

Процитировано

0
Multi-index evaluation of drought conditions in Northeastern Algeria using remote sensing tool DOI
Fatima Zohra Tebbi, Ouassila Bahloul,

Abderezzaq Nouar

и другие.

STUDIES IN ENGINEERING AND EXACT SCIENCES, Год журнала: 2024, Номер 5(2), С. e11707 - e11707

Опубликована: Дек. 6, 2024

Drought is a complex natural disaster with profound impacts on environmental, social, and economic systems globally. This research investigates drought conditions in the Koudiet Mdaouar Basin, located northeastern Algeria, through comprehensive analysis of satellite-derived indicators from 2019 to 2023. Employing advanced remote sensing GIS-based methodological approaches, study systematically evaluates vegetation health, thermal stress patterns, water resource dynamics, particular focus reservoir region. The reveals significant progressive decline ecological conditions, characterized by deteriorating cover, intensified stress, severe scarcity. These findings not only highlight region's environmental vulnerability but also demonstrate intricate interplay between climatic changes local ecosystem dynamics. emphasizes necessity developing adaptive policies underscores potential integrated satellite ground-based observation techniques for more precise assessments, offering critical insights management climate resilience strategies.

Язык: Английский

Процитировано

0