GRACE-based high-resolution propagation threshold from meteorological to groundwater drought

Han, Zhenyu; Huang, Shengzhi; Huang, Qiang; Leng, Guoyong; Liu, Yi; Bai, Qingjun; He, Panxing; Liang, Hao; Shi, Wuzhi

doi:10.1016/j.agrformet.2021.108476

Cited by 53 publications

(13 citation statements)

References 43 publications

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“…Similar findings have been reported in DFAA experiments on rice (Gao et al, 2019;Huang et al, 2019;Xiong et al, 2019). The probable mechanism could be explained as follows: a higher root biomass can guarantee supplying enough water, nutrients, and plant hormones to shoots, thus ensures high shoot biomass; in turn, a high shoot biomass could supply enough photosynthates to roots to guarantee roots growth (Liu et al, 2021). Compared with the CS treatments, the root-shoot ratio was larger at the drought period of DFAA during the seeding-jointing stage; while it was lower at the flooding period of DFAA during the seeding-jointing stage, and in the DFAA treatments occurring during the tasseling-grain filling stage.…”

Section: Dfaa Decreased Biomass and Increased Yield Loss In Field Exp...supporting

confidence: 82%

“…It has become a major issue to explore crop adaptation to changing environment, which guarantees food safety and socio-economic development (Zhao et al, 2017b;Magno Massuia de Almeida et al, 2022). In recent years, extreme events such as droughts and floods have occurred frequently and widely under intensive climate change (Han et al, 2021). The affected area of global extreme droughts since the 1970s has increased by about 1.5 times compared with that before the 1970s (Dai et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…Maize production is essential to global agriculture. Certain limits exist for its growth, such as, water stress (Liu et al, 2021;Li et al, 2022). The grain quality is affected by extreme events.…”

Section: Introductionmentioning

confidence: 99%

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Response of summer maize growth to drought-flood abrupt alternation

Weng²,

Yan³

et al. 2023

Front. Earth Sci.

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Extreme events normally have negative effects on crop growth. Many studies have reported findings on drought and flood events, while only sparse studies have focused on new types of extreme events, such as drought-flood abrupt alternation (DFAA). We attempted to gain an insight on the effects of DFAA over two-year field experiment on biomass, grain yield and quality, then simulated the yield loss to DFAA in history and future in summer maize planting area in the Northern Anhui Plain. Results show that DFAA significantly reduced root biomass and shoot biomass by 77.1% and 60.1% compared with that in the control systems. The negative effect lasted until mature stage. The grain yield loss was 14.1%–38.4% in different DFAA treatments. The numerical simulation reveals that the average annual yield loss due to DFAA has been increasing in the Northern Anhui Plain, with 21.19%–30.98% during 1964–2017, 14.10%–33.40% during 2020–2050. The spatial distribution of yield loss changed as well. This study increases our knowledge of the effects of DFAA on crop production and highlights the need to consider the targeted countermeasures.

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Section: Dfaa Decreased Biomass and Increased Yield Loss In Field Exp...supporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

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Response of summer maize growth to drought-flood abrupt alternation

Weng²,

Yan³

et al. 2023

Front. Earth Sci.

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“…The results in section 3.1 indicated that the probability of simultaneous occurrence of atmospheric drought and soil drought is high, but the multiplier of the probability of occurrence of compound drought is unknown. Considering that the couplas function can better associate the tail correlation of quantitative extreme variables (Han et al 2021, Wang et al 2021, the likelihood multiplication factors (LMFs) of simultaneous occurrence of atmospheric droughts and soil droughts based on the couplas probability framework were shown in figure 3. The results shown that the probability of occurrence of compound drought in Chinese grasslands is much higher than the probability of occurrence of two events at random (0.1 × 0.1 = 0.01, i.e.…”

Section: Frequency Intensity and Impact Of Compound Drought Events On...mentioning

confidence: 99%

Compound drought constrains gross primary productivity in Chinese grasslands

Sun

et al. 2022

Environ. Res. Lett.

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Water constraints disturb and damage the growth and development of grassland veg-etation mainly through both atmospheric and soil pathways. In the background of rapid climate change in the future, the impacts of water constraints on grasslands are expected to further deepen. However, current studies lack reports exploring the fre-quency, intensity, and area of land-atmospheric compound drought on carbon indica-tors in grassland ecosystems. In this study, we analyze the response of China grass-lands to dual terrestrial-atmospheric water constraint events using ISIMIP gorss pri-mary productivity (GPP) data to reveal the carbon cycle-climate feedback relation-ships over the Chinese grassland. We found that the occurrence probability of com-pound drought events (i.e., land-atmospheric water constraint) was 3-4 times higher than that of random drought events, and the frequency, intensity, and affected area of compound droughts were significantly higher than that of single droughts. Compound droughts caused a decline of up to 20.27% in GPP of grassland ecosystems in China, while the decline of single atmospheric drought or soil drought was only 12.34% and 14.32%. Which is because VPD and SM are a set of strongly coupled bivariate varia-bles, and the continued strengthening of the land-atmospheric feedback causes a higher probability of occurrence of compound drought events and an increased impact on ecosystem GPP.

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“…HD occupies a pivotal position in all kinds of droughts due to its direct relationship with human life (Jehanzaib et al, 2020; Li et al, 2021; Roodari et al, 2021; Wan et al, 2017). Subsequently, drought propagation became a trending topic in the field of hydrology and water resources (Han et al, 2021). Yang et al (1969) and Van Loon et al (2012) found that drought has the characteristics of aggregation, attenuation, lag and prolongation when propagating in the hydrological system.…”

Section: Introductionmentioning

confidence: 99%

Characteristics and propagation of meteorological and hydrological droughts in eastern Gansu, a typical semi‐arid region, China

Zou

Yin

Wang

et al. 2023

Intl Journal of Climatology

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The meteorological drought (MD) is the precursor of the hydrological drought (HD), and understanding the propagation process from MD to HD is of great significance for the early warning of HD. Based on the theory of run and Bayesian networks, this study uses the standardized precipitation index (SPI), standardized precipitation evapotranspiration index (SPEI) and standardized streamflow index (SSI) to explore the characteristics and propagation of MD and HD in the regions of eastern Gansu, China. The results indicate that: (1) The region was mainly wet (dry) and the wetness (dryness) was stronger before (after) 2000 when reflected by SSI. The frequency is higher based on SPI and SPEI than that based on SSI, while the duration and magnitude are lower than those based on SSI. (2) The propagation time from MD to HD is generally within 1–10 months. After the occurrence of a certain level of MD, it is most likely to propagate to HD events that are relatively weaker than the MD. Besides, the higher the intensity level of MD, the shorter the propagation time to HD, and the shorter for cumulative occurrence probability of HD to approach 1.0. (3) The increase in temperature and decrease in precipitation, runoff and runoff coefficient may contribute to the dryness after 2000. Moreover, the weakened propagation from MD to HD may be due to the rapid increase of water resource consumption caused by intensive anthropogenic activities in the study area. From the above results, this study found some propagation characteristics from MD to HD in a semi‐arid and semi‐humid watershed, which can provide a supplement for revealing the drought mechanism and can assist in the management and planning of water resources in China.

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GRACE-based high-resolution propagation threshold from meteorological to groundwater drought

Cited by 53 publications

References 43 publications

Response of summer maize growth to drought-flood abrupt alternation

Response of summer maize growth to drought-flood abrupt alternation

Compound drought constrains gross primary productivity in Chinese grasslands

Characteristics and propagation of meteorological and hydrological droughts in eastern Gansu, a typical semi‐arid region, China

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