Spatiotemporal Characteristics of Winter Wheat Waterlogging in the Middle and Lower Reaches of the Yangtze River, China

Abstract

The waterlogging is a serious agrometeorological disaster caused by excessive soil water during crop growth stages. The middle and lower reaches of the Yangtze River are one of the major winter wheat growing regions in China and at the same time they are waterlogging-prone due to their specific climatic conditions. In this study, we integrated a set of tools to analyze the spatiotemporal features of winter wheat waterlogging in this region. We proposed a waterlogging precipitation index (WPI) based on winter wheat yield loss rate and precipitation anomaly percentage and analyzed the frequency, scope, and intensity of winter wheat waterlogging. The results showed that the spring rainfall had a direct and significant effect on winter wheat yield, and the meteorological yield of winter wheat was negatively correlated with precipitation abnormal event from jointing to maturity stages (March to May) across the whole study area. The matching between the waterlogging severity identified by the WPI and historical winter wheat waterlogging records was relatively high. We also discussed the influences of the other nonmeteorological factors, for example, soil texture, topographic and geomorphic conditions, and local disaster-resisting ability, on the extent of waterlogging damage.

Potassium Alleviates Post-anthesis Photosynthetic Reductions in Winter Wheat Caused by Waterlogging at the Stem Elongation Stage

“…Waterlogging is especially frequent in the region during springtime when rains are heavy. The key growth periods of wheat from the stem elongation to booting stages occur in this season ( Chen et al, 2018 ). Waterlogging during these developmental stages reduces wheat yield to a greater extent than excessive rainfall in others ( Celedonio et al, 2014 ).…”

Quantifying the impacts of waterlogging on cotton at different growth stages: A case study in Hubei Province, China

“…However, relevant work has rarely been performed until now. More generally, as pointed out by several scholars (Chen et al, 2018;Liu et al, 2017), in the current research field of how waterlogging affects crops, the combination of field trials and regional analysis is indeed insufficient, which has limited the practicability of field-level results. China is the second largest cotton producer in the world, contributing approximately 30% of global cotton production (Dai & Dong, 2014).…”

“…China is the second largest cotton producer in the world, contributing approximately 30% of global cotton production (Dai & Dong, 2014). As one of the three major cotton production areas in China, the Yangtze River Plain has a very humid climate which provides the conditions necessary for waterlogging in fields (Chen et al., 2018; Kuai et al., 2015; Liu et al., 2015). Hubei Province is the top cotton production province in the Yangtze River Plain; thus, it was selected as the case area of the present work.…”

An Assessment of Small Wetland Ecohydrological Dynamics Using Sentinel-2 MSI Derived Spectral Indices in Semi-Arid Environments of South Africa

“…Other studies revealed that unprotected wetlands are highly vulnerable to environmental and anthropogenic changes through alterations of hydrological regimes, which threaten wetland areas and their-dependent species (Al-Obaid et al, 2017;Bhanga et al, 2020;Wanjala et al, 2020). Natural processes including change in temperature, rainfall patterns, evapotranspiration, drought rate and erosion have fast-tracked wetland water losses (Xia et al, 2017;Chen et al, 2018). It was noted that river channels and associated oodplain wetlands signify spatial and temporal hydrological changes due to ooding and drought rates affecting inundation area (Lambs, 2020).…”