Benefit of aerosol reduction to winter wheat during China's clean air action:A case study of Henan Province  

作　　者：Yang Bai Pengfei Zhao Xueyang Chen Lijun Wang Wenjuan Chang Jianzhong Guo Jiayao Wang 

机构地区：[1]College of Geography and Environmental Science,Henan University,Kaifeng 475004,China [2]Henan Industrial Technology Academy of Spatio-Temporal Big Data,Henan University,Zhengzhou 475000,China [3]Henan Technology Innovation Center of Spatio-Temporal Big Data,Henan University,Zhengzhou 450046,China [4]Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions(Henan University),Ministry of Education,Kaifeng 475000,China

出　　处：《Journal of Environmental Sciences》2024年第7期90-101,共12页环境科学学报（英文版）

基　　金：supported by the Joint Funds of the National Natural Science Foundation of China(No.U21A2014);the Science and Technology Development Program of Henan Province(No.232102321032);the support from the Henan Dabieshan National Field Observation and Research Station of Forest Ecosystem。

摘　　要：A strongly declining aerosol radiative effect has been observed in China since 2013 after implementing the clean air action,yet its impact on wheat(Triticum aestivum L.)production remains unclear.We use satellite measures and a biophysical crop model to assess the impact of aerosol-induced radiative perturbations on winter wheat production in the agricultural belt of Henan province from 2013 to 2018.After calibrating parameters with the extended Fourier Amplitude Sensitivity Test(EFAST)and the generalized likelihood uncertainty estimation(GLUE)method,the DSSAT CERES-Wheat model was able to simulate crop biomass and yield more accurately.We found that the aerosol negatively impacted wheat biomass by 21.87%and yield by 22.48%from 2006 to 2018,and the biomass effects from planting to anthesis were more significant compared to anthesis to maturity.Due to the strict clean air action,under all-sky conditions,the surface solar shortwave radiation(SSR)in 2018 increased by about 7.08%over 2006-2013 during the wheat growing seasons.As a result of the improvement of crop photosynthesis,winter wheat biomass and yield increased by an average of 5.46%and 2.9%,respectively.Our findings show that crop carbon uptake and yield will benefit from the clean air action in China,helping to ensure national food and health security.

关 键 词：Haze pollution Clean air action Aerosol-induced radiative perturbation Wheat production DSSAT model 

分 类 号：X513[环境科学与工程—环境工程] S512.11[农业科学—作物学]