Influence of irrigation and groundwater on the propagation of meteorological drought to agricultural drought

Li, Fawen; Manjing, Zhang; Zhao, Yi; Jiang, Rengui

doi:10.1016/j.agwat.2022.108099

Cited by 18 publications

(2 citation statements)

References 31 publications

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“…In summary, most studies focus on constructing propagation models based on the characteristics from meteorological drought to hydrological drought, and quantitatively calculating the thresholds of characteristic values for meteorological drought-induced hydrological drought [ 18 , 19 ]. However, for agricultural management, accurate monitoring of agricultural drought conditions is essential [ 20 ], and the transmission of meteorological-agricultural drought is a problem that deserves attention [ 21 , 22 ]. Due to climate change and human activities, the frequency and intensity of drought events have significantly increased by 20% [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Propagation thresholds and driving mechanism detection of karst meteorological- agricultural drought: A case study in Guizhou Province

Chen,

He,

Tan

et al. 2024

PLoS ONE

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It is significant to systematically quantify the propagation thresholds of meteorological drought to different levels of agricultural drought in karst areas, and revealit’s the propagation driving mechanisms. This can guide early warning and fine management of agricultural drought. In this study,we selected Guizhou Province as an example. The standardized precipitation evapotranspiration index (SPEI) and standardized soil moisture index (SSI) were used to characterize meteorological and agricultural drought. The run theory was used to identify, merge and eliminate drought events. The maximum correlation coefficient was used to capture the propagation time of meteorological-agricultural drought. The regression models were used to quantify the propagation intensity threshold from meteorological drought to different levels of agricultural drought. Finally, the propagation threshold driving mechanism was explored using geographical detectors. The results show that: (1) in terms of temporal variations during the past 21 years, regional meteorological drought had a shorter duration and a higher intensity than agricultural drought, Particularly, 2011 was a year of severe drought, and agricultural drought was significantly alleviated after 2014. (2) In terms of spatial variations, the "long duration area" of meteorological drought duration showed an "S" shaped distribution in the northeast, and the "short duration area" showed a point-like distribution. The overall duration of agricultural drought showed a spatial distribution of northeast to “medium-high in the northeast and low in the southwest. (3) The drought propagation time showed an alternating distribution of "valley-peak-valley-peak" from southeast to northwest. In terms of propagation intensity thresholds, light drought showed an overall spatial distribution of high in the east and low in the west. Moderate, severe, and extreme droughts showed a spatial distribution of low in the center north of southern Guizhou) and high in the borders. (4) There was a strong spatial coupling relationship between karst development intensity, altitude and meteorological-agricultural drought propagation thresholds. The interaction of different factors exhibited a two-factor enhancement and nonlinear enhancement on the propagation threshold. This indicates that synergistic effects of different factors on the propagation threshold were larger than single-factor effects.

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Section: Introductionmentioning

confidence: 99%

Propagation thresholds and driving mechanism detection of karst meteorological- agricultural drought: A case study in Guizhou Province

Chen,

He,

Tan

et al. 2024

PLoS ONE

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“…Meteorological drought and agricultural drought are interconnected through various aspects, such as the scarcity of rainfall, deviation from normal meteorological factors like evapotranspiration, insufciency of soil moisture, and a decline in groundwater levels [21]. When a meteorological drought persists for an extended period, it can cause an agricultural drought because the lack of precipitation leads to a lack of soil moisture, resulting in lower crop production [1,22,23]. In addition to impacting crops, droughts also have adverse efects on orchards, forests, and the overall environment.…”

Section: Introductionmentioning

confidence: 99%

A New Comprehensive Framework for Identifying and Monitoring the Interseasonal Characteristics of Meteorological Drought

Amin,

Niaz,

Albasheir

et al. 2023

Complexity

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The current study aimed to examine the interseasonal characteristics of meteorological drought. For this purpose, a new comprehensive framework is proposed. The framework consists of two major stages. In the first stage of the framework, the K-means method is utilized to identify homogeneous clusters. Besides, the Monte Carlo feature selection (MCFS) is applied to select more important stations from the varying clusters. In the second stage, the standardized precipitation index at a three-time scale (SPI-3), the conditional fixed effect binary logistic regression model (CFEBLRM), and the random effect binary logistic regression model (REBLRM) are utilized. The significance of CFEBLRM and REBLRM is measured by log-likelihood values, log-likelihood ratio chi-square test (LRCST), Wald chi-square tests (WCT), and p values. The Hausman test (HT) is applied to identify endogeneity and suggests the appropriate model in CFEBLRM and REBLRM. The results from the proposed framework indicate that the drought persists in the summer to autumn and autumn to winter seasons between 90 and 99 percent. The odds ratio of CFEBLRM for the summer-autumn season indicates that the increment in precipitation will decrease the drought persistence in the autumn season. The result of the current study facilitates the decision-makers to understand the effects of meteorological drought occurrences better and improve strategies for mitigating drought effects and managing seasonal crops in the Punjab province in Pakistan.

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Assessment of meteorological drought impacts on rainfed agriculture using remote sensing–derived biomass productivity

Al-Kilani,

Al-Bakri,

Rahbeh

et al. 2024

Environ Monit Assess

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Influence of irrigation and groundwater on the propagation of meteorological drought to agricultural drought

Cited by 18 publications

References 31 publications

Propagation thresholds and driving mechanism detection of karst meteorological- agricultural drought: A case study in Guizhou Province

Propagation thresholds and driving mechanism detection of karst meteorological- agricultural drought: A case study in Guizhou Province

A New Comprehensive Framework for Identifying and Monitoring the Interseasonal Characteristics of Meteorological Drought

Assessment of meteorological drought impacts on rainfed agriculture using remote sensing–derived biomass productivity

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