Article
Geosciences, Multidisciplinary
Tazen Fowe, Roland Yonaba, Lawani Adjadi Mounirou, Etienne Ouedraogo, Boubacar Ibrahim, Dial Niang, Harouna Karambiri, Hamma Yacouba
Summary: This study aims to investigate the relationships between meteorological and hydrological droughts in the Nakanbe River basin upstream Wayen hydrometric station (NRUW) in Burkina Faso. The results indicate distinct categories of droughts occurring at different time scales, and the relationships between the two types of droughts are crucial for effective monitoring and prediction of hydrological drought events.
Article
Engineering, Civil
Yaping Wang, Shuai Wang, Wenwu Zhao, Yanxu Liu
Summary: Under global warming, droughts have become more severe and frequent. This study focuses on the Yellow River basin in China, which is mainly located in arid and semi-arid regions and suffers from severe droughts. The study examines the temporal and spatial patterns of droughts in the area and explores the relative effects of water supply (precipitation) and demand (evapotranspiration) on drought occurrence. The study finds that precipitation is the dominant driver of drought occurrence in most of the basin, while evapotranspiration has a greater contribution to drought variations in some areas. The study also highlights the relationship between droughts and ocean signals such as ENSO and NAO.
JOURNAL OF HYDROLOGY
(2022)
Article
Environmental Sciences
Myung-Jin Um, Yeonjoo Kim, Kichul Jung, Moonyoung Lee, Heejin An, Inkyung Min, Jaesang Kwak, Daeryong Park
Summary: This paper explored the phenomenon of drought propagation in the Yangtze River basin, China, using meteorological, hydrological, and agricultural aspects. Three drought indices, SPEI, SRI, and SSMI, were used to evaluate the different types of droughts. The study confirmed the propagation of meteorological to hydrological and agricultural droughts in the Yangtze River basin.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Thi-Thu-Ha Nguyen, Ming -Hsu Li, Tue Minh Vu, Pei -Yuan Chen
Summary: This study investigates the spatiotemporal characteristics of droughts in the Mekong River Basin (MRB) and their connection with the El Nino Southern Oscillation (ENSO). The results show that the Standardized Precipitation Index (SPI) is more accurate in identifying drought events and severity, while the Standardized Runoff Index (SRI) can better observe drought frequency. The Middle MRB experiences more drought events, while the Upper MRB has higher frequency and intensity of droughts. The ENSO has significant influences on drought variabilities in the southern MRB, but the impacts are insignificant in the north. Multiple drought indices can identify drought characteristics from meteorological, agricultural, and hydrological perspectives and can be used for drought outlook considering their ENSO teleconnections.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Agronomy
Weiqi Liu, Shaoxiu Ma, Kun Feng, Yulai Gong, Linhao Liang, Mitsuru Tsubo
Summary: Drought monitoring is essential for evaluating the impact of drought and choosing appropriate mitigation strategies. The suitability of drought indices varies across different regions due to varying drivers of drought. The study focuses on exploring suitable indicators for agricultural drought monitoring in the Shiyang River Basin, a closed water cycle system in China's Gansu Province.
Article
Engineering, Civil
Qi Zhang, Chiyuan Miao, Xiaoying Guo, Jiaojiao Gou, Ting Su
Summary: Understanding the impact of human activities on drought propagation is crucial for developing mitigation strategies and predicting hydrological drought. This study examined the spatiotemporal characteristics of drought propagation in the Yellow River Basin and found that human activities have reduced hydrological drought events and shortened the propagation time.
JOURNAL OF HYDROLOGY
(2023)
Article
Geosciences, Multidisciplinary
Rong Gan, Shuqian Gu, Xiaoxia Tong, Jinqiang Lu, Hui Tang
Summary: In this study, the authors investigated the temporal characteristics of hydrological drought in the Shaying River Basin, and found that the severity of drought has been increasing due to human activities causing a decrease in runoff.
Article
Environmental Studies
Qingqing Li, Yanping Cao, Shuling Miao, Xinhe Huang
Summary: This research analyzed the spatiotemporal characteristics of drought and wet events in the Yellow River basin from 1961 to 2020 using the standardized precipitation index (SPI). The results showed that drought frequency decreased while wetness increased over time. Drought had a negative effect on grain yield per unit area, while wetness had a positive effect, except in Shandong province. The findings indicate the effectiveness of human activities in preventing and controlling drought and wet disasters, providing a reference for other regions.
Article
Environmental Sciences
Xiaoyang Zhao, Haoming Xia, Li Pan, Hongquan Song, Wenhui Niu, Ruimeng Wang, Rumeng Li, Xiqing Bian, Yan Guo, Yaochen Qin
Summary: This study used remote sensing technology and meteorological data to analyze drought conditions in the Yellow River Basin. The results show that reconstructed temperature and vegetation indices can improve the accuracy of drought monitoring, different drought indices show consistency in spatial and temporal patterns but differences in some local areas, and drought level in the Yellow River Basin is highest in the northwest and lowest in the southwest and southeast, remaining stable from 2003 to 2019.
Article
Environmental Sciences
Yanqun Ren, Jinping Liu, Masoud Jafari Shalamzari, Arfan Arshad, Suxia Liu, Tie Liu, Hui Tao
Summary: This study investigates the temporal and spatial variation characteristics of drought and wetness in the source region of the Yellow River Basin (SRYRB) from 1960 to 2015. The results show a high consistency between the standardized precipitation index (SPI) and reconnaissance drought index (RDI) on different time scales. The SRYRB has experienced an increasing trend in wetness since the early 1980s, especially at the vegetation growing seasonal (VGS) time scale.
Article
Environmental Sciences
Zulfaqar Sa'adi, Zulkifli Yusop, Nor Eliza Alias, Mohammed Sanusi Shiru, Mohd Khairul Idlan Muhammad, Muhammad Wafiy Adli Ramli
Summary: This study aims to select the most suitable rain-based meteorological drought index for detecting drought characteristics and identifying tropical drought events in the Johor River Basin. Seven drought indices were evaluated, and CZI, MCZI, SPI, and ZSI were found to outperform the others. SPI was particularly effective in detecting spatial coverage and the occurrence of 'very dry' and 'extremely dry' drought events.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Xiaoliang Shi, Fei Chen, Mengqi Shi, Hao Ding, Yi Li
Summary: In this study, an Optimized Comprehensive Drought Index (OCDI) was constructed by considering the lag time of meteorological drought, agricultural drought, and hydrological drought. The application results showed that OCDI was more suitable for drought monitoring in the study area.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Zhihui Wang, Qiuhong Tang, Daoxi Wang, Peiqing Xiao, Runliang Xia, Pengcheng Sun, Feng Feng
Summary: The naturalized streamflow in the Yellow River basin has significantly decreased due to vegetation and land use changes. This study improves our understanding of the spatiotemporal patterns and mechanisms of natural streamflow reduction in the region.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2022)
Article
Water Resources
Bakkiyalakshmi Palanisamy, Balaji Narasimhan, Sabu Paul, Raghavan Srinivasan, Winai Wangpimool, Ratino Sith, Rattykone Sayasane
Summary: The Mekong River Basin frequently experiences extreme droughts and floods due to precipitation deficit. Evaluating the deficits in hydrometeorological extremes is important to understand the impacts of drought on soil moisture, agricultural productivity, and surface water resources. This study proposed and applied a streamflow deficit index (SDI) to assess the changes in hydrology caused by fluctuations in precipitation and soil moisture in the Mekong River Basin. The results demonstrated that SDI effectively represented historical river flow deficit and captured the increasing variation in streamflow deficit in parts of Thailand, Lao PDR, Vietnam, and Cambodia.
HYDROLOGICAL PROCESSES
(2023)
Article
Biodiversity Conservation
Kai Zhou, Yimin Wang, Jianxia Chang, Shuai Zhou, Aijun Guo
Summary: The study reveals three typical spatial and temporal distribution patterns of interannual scale drought in the Yellow River Basin, with clear spatial propagation characteristics. These patterns show correlations with the Southern Oscillation on the temporal-frequency scale, with a lag time of 1-2 years.
ECOLOGICAL INDICATORS
(2021)