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Tracking the influence of drought events on winter wheat using long-term gross primary production and yield in the Wei River Basin, China by Guangpo Geng; Rui Yang; Qiuji Chen; Tiantian Deng; Meng Yue; Bao Zhang; Qian Gu is a Agricultural and Biological Sciences article available to read on EtoBox.

What is Tracking the influence of drought events on winter wheat using long-term gross primary production and yield in the Wei River Basin, China about?

The Wei River Basin (WRB) is the main winter wheat-producing area in Northwest China and plays a pivotal role in national food security and economic development. Drought is the main agro-meteorological disaster affecting winter wheat yield in this region, and the accurate assessment of the drought impacts on crop growth and yield is an important part of maintaining food security. However, commonly used assessment methods, such as correlation analysis and crop model simulation, have some limitations. In this study, based on standardized precipitation evapotranspiration index (SPEI) at multiple time scales, gross primary production (GPP) and yield data from 1990 to 2018, sensitivity analysis, Pearson correlation, and superposed epoch analysis (SEA) were used to analyze the spatiotemporal characteristics of drought in the WRB and its influence on winter wheat growth and quantitatively assess the impact of drought at different levels on winter wheat yield. The results were as follows: 1) Overall, the WRB was in a dry state with a drying trend during 1990–2018, and the droughts in spring, summer, and winter were the main driving forces of annual drought that seriously threatened the gro

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Author

Guangpo Geng; Rui Yang; Qiuji Chen; Tiantian Deng; Meng Yue; Bao Zhang; Qian Gu

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Agricultural and Biological Sciences (Physical Sciences)