Multivariate Drought Assessment Considering the Antecedent Drought Conditions

Waseem, Muhammad; Ajmal, Muhammad; Lee, Joo Heon; Kim, Tae‐Woong

doi:10.1007/s11269-016-1416-5

Cited by 12 publications

(8 citation statements)

References 24 publications

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“…Exogenous application of plant growth regulators is believed to be very effective in ameliorating the adverse effects of abiotic stresses on different crops (Ashraf et al, 2008(Ashraf et al, , 2010Shafiq et al, 2015;Waseem et al, 2016). Of various plant growth promoters, thiamin (vitamin B1) plays a very important role in mitigating the adverse effects of abiotic stress including drought stress on different crops (Sayed and Gadallah, 2002;Tunc-Ozdemir, 2009;Rapala-Kozik et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Thiamin-induced variations in oxidative defense processes in white clover ( Trifolium repens L.) under water deficit stress

Ghafar¹,

Akram²,

Ashraf³

et al. 2019

Turk J Bot

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Introduction World food security is being significantly hampered due to water scarcity (Mitter et al., 2015). Water stress is different from other stresses because unlike other natural disasters its effects remain even after its period terminates (Ashraf et al., 2010; Strauss et al., 2013). Soil water deficiency affects three major mechanisms in plants: reduced canopy absorption of photosynthetically available radiation (PAR), radiation use efficiency, and harvest index, and all of these lead to reduced plant yield (Fiala et al., 2014). Seedling growth and productivity are also severely affected, mainly due to low supply of water (Atkinson and Urwin, 2012). Due to drought stress, germination potential (Wang et al., 2011), hypocotyl length, and plant biomass are commonly hampered (Wang et al., 2015). During the initial stage of growth and germination, relative water content was high in wheat, which decreased as dry matter accumulated and leaf matured (Hajheidari et al., 2007; Kaur et al., 2007). Nutrient uptake and tissue level concentrations along with water relations are perturbed under water-limited conditions in crop plants (Losak et al., 2010). Drought stress causes the production of reactive oxygen species (ROS), which affect the ultrastructure of cell membranes and DNA as well as the functioning of cellular processes (Turkan, 2011; Sun et al., 2013; Kaya et al., 2015). ROS including hydroxyl radical, anion radical, hydrogen peroxide, alkyl radicals, and singlet oxygen are injurious to plant metabolic activities. These species may react to lipids, proteins, and DNA, which causes oxidative damage and abnormal functions of cells (Sarvajeet and Tuteja, 2010; Shafiq et al., 2015). It is known that absorption of thiamin by plant root, leaves, and

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Section: Discussionmentioning

confidence: 99%

Thiamin-induced variations in oxidative defense processes in white clover ( Trifolium repens L.) under water deficit stress

Ghafar¹,

Akram²,

Ashraf³

et al. 2019

Turk J Bot

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“…One is based on traditional meteorological observed data, such as the Standardized Precipitation Index [3], Palmer Drought Severity Index [4], and Z index [5,6]. The SPI has been extensively applied as a basic index for monitoring drought in many countries, (e.g., United States [7], China [8], and Korea [9] and European countries [10]). It is simple to calculate, and has the advantage of being able to monitor capability across time scales.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Drought Assessment Using a Modified Composite Drought index: A Case Study in Hubei Province, China

Chen

Zhong

Pan

et al. 2020

Water

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Under the background of global climate change, accurate monitoring and comprehensive assessment of droughts are of great practical significance to sustain agricultural development. Considering multiple causes and the complexity of the occurrence of drought, this paper employs multiple input variables, i.e., precipitation, temperature, evaporation, and surface water content to construct a modified composite drought index (MCDI) using a series of mathematical calculation methods. The derived MCDI was calculated as a multivariate drought index to measure the drought conditions and verify its accuracy in Hubei Province in China. Compared with the existing multivariate drought index, i.e., meteorological drought composite index (CI), there was a high level of correlation in monitoring drought events in Hubei Province. Moreover, according to the drought historical record, the significant drought processes monitored by the MCDI were consistent with actual drought conditions. Furthermore, temporal and spatial analysis of drought in Hubei Province was performed based on the monitoring results of the MCDI. This paper generalizes the development of the MCDI as a new method for comprehensive assessments of regional drought.

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“…The intensity and extent of drought depend upon the climatic characteristics of the region ( Svoboda et al, 2012) along with the magnitude of rainfall deficiency and antecedent moisture conditions of the soil (Waseem et al, 2016). The indices are used to identify and characterize the droughts (Zargar et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Agricultural Drought and Soil Moisture Analysis Using Satellite Image Based Indices

Sreekesh¹,

Kaur²,

Naik³

2019

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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<p><strong>Abstract.</strong> The deficiency in rainfall leads to meteorological droughts. Its manifestations are visible both in the vegetation cover and soil moisture. The present study assessed the characteristics of agricultural drought following meteorological droughts. The study also assessed the severity of meteorological droughts and their manifestation on the agriculture and soil moisture in a semi-arid area. The study has been carried out for the Malaprabha sub-basin which partly covers three districts of North Interior Karnataka, India. India Meteorological Department’s (IMD) criteria have been used to identify the drought years, and its severity has been assessed through the Standard Precipitation Index (SPI). The IMD’s monthly rainfall data were used to identify the drought years and periods for the region. Among the drought years, the mild, moderate, and severe drought along with deficit and excess rainfall years were considered to assess and characterize the soil moisture conditions and the agricultural drought. The satellite image based indices for these selected years were constructed to determine the soil moisture conditions and the agricultural drought severity. The Temperature-Vegetation Dryness Index (TVDI) was used to determine the soil moisture conditions. The indices employed to determine the agriculture drought are NDVI, Thermal Condition Index (TCI), Vegetation Condition Index (VCI), and Vegetation Health Index (VHI). These satellite-based indices were calculated using the Landsat images of the selected drought and non-drought years. The results showed that the seasonal and annual drought are frequent in the study area. There are spatial and temporal variations in the drought years and their severity. The satellite-based indices clearly indicate the spatial variation in the agriculture droughts and its intensity. It has been found that the impact of drought on agriculture has significantly reduced due to the development of well-irrigation in the sub-basin. VHI is more appropriate in determining the agricultural drought and its characteristics.</p>

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Multivariate Drought Assessment Considering the Antecedent Drought Conditions

Cited by 12 publications

References 24 publications

Thiamin-induced variations in oxidative defense processes in white clover ( Trifolium repens L.) under water deficit stress

Thiamin-induced variations in oxidative defense processes in white clover ( Trifolium repens L.) under water deficit stress

Comprehensive Drought Assessment Using a Modified Composite Drought index: A Case Study in Hubei Province, China

Agricultural Drought and Soil Moisture Analysis Using Satellite Image Based Indices

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