Sun-induced chlorophyll fluorescence is superior to satellite vegetation indices for predicting summer maize yield under drought conditions
文献类型: 外文期刊
第一作者: Wang, Yu-Qian
作者: Wang, Yu-Qian;Shang, Guo-Fei;Zhang, Xia;Wang, Yu-Qian;Leng, Pei;Li, Zhao-Liang
作者机构:
期刊名称:COMPUTERS AND ELECTRONICS IN AGRICULTURE ( 影响因子:8.3; 五年影响因子:8.3 )
ISSN: 0168-1699
年卷期: 2023 年 205 卷
页码:
收录情况: SCI
摘要: Maize is one of the most important food crops in the world and its demand has increased dramatically in recent decades. Traditional vegetation indices (e.g., normalized difference vegetation index, NDVI, enhanced vegetation index, EVI) reveal a significant lag in response to drought events, which may affect the accuracy of maize yield estimation, especially under drought conditions. Although solar-induced chlorophyll fluorescence (SIF) is recognized to be more sensitive to water stress, the potential of SIF for maize yield prediction under drought conditions requires further investigation. To this end, this study takes a major corn production region (Hebei Province) in China as an example to predict maize yield under both normal and drought years. We have utilized three satellite data (SIF, NDVI, and EVI), meteorological data, and soil data from 2000 to 2019 to predict the summer maize yield at the county level, using a machine learning (ML) method (random forest, RF) and a deep learning (DL) method (long and short-term memory, LSTM). The results showed that the overall accuracy of the predicted yield reached 90% and that the ML method was slightly better than the DL method. In normal years, the three satellite data (SIF, NDVI, and EVI) can generally predict maize yield with comparable accuracy. Nonetheless, the performance using SIF (743.53 kg/ha) was better than EVI (791.88 kg/ha) and NDVI (814.48 kg/ha) in a recognized severe drought year (2002) over the study area, indicating that SIF has a certain superiority in predicting summer maize yield under drought conditions.
分类号:
- 相关文献
作者其他论文 更多>>
-
A method for estimating surface soil moisture from diurnal land surface temperature observations over vegetated regions: A preliminary result over an AmeriFlux site and the REMEDHUS network
作者:Geng, Yun-Jing;Leng, Pei;Li, Zhao-Liang
关键词:
-
A physical method for downscaling land surface temperatures using surface energy balance theory
作者:Hu, Yongxin;Tang, Ronglin;Jiang, Xiaoguang;Li, Zhao-Liang;Jiang, Yazhen;Hu, Yongxin;Li, Zhao-Liang;Hu, Yongxin;Tang, Ronglin;Li, Zhao-Liang;Jiang, Yazhen;Jiang, Xiaoguang;Gao, Caixia;Liu, Meng;Zhou, Xiaoming
关键词:Land surface temperature; Thermal infrared remote sensing; Surface energy balance; Downscaling; DTsEB
-
Estimation of quasi-full spatial coverage soil moisture with fine resolution in China from the combined use of ERA5-Land reanalysis and TRIMS land surface temperature product
作者:Zhang, Yong-Rong;Shang, Guo-Fei;Zhang, Xia;Zhang, Yong-Rong;Leng, Pei;Li, Zhao-Liang;Ma, Chunfeng;Ma, Jianwei
关键词:Soil moisture; Land surface temperature; Reanalysis data; Blended microwave products
-
Biophysical impacts of earth greening can substantially mitigate regional land surface temperature warming
作者:Li, Yitao;Wu, Hua;Tang, Ronglin;Li, Yitao;Wu, Hua;Li, Zhao-Liang;Liu, Xiangyang;Leng, Pei;Yang, Peng;Wu, Wenbin;Zhou, Chenghu;Shang, Guo-Fei;Ma, Lingling
关键词:
-
Carbon and nitrogen fractions are more important than bacterial composition for carbon and nitrogen mineralization considering parent material and fertilization
作者:Xue, Shaoqi;Xu, Shiqi;Kou, Wei;Han, Jiale;Fan, Ting;Wang, Xudong;Wang, Xudong;Zhang, Xia
关键词:Mineralization; Carbon fractions; Nitrogen fractions; Bacterial composition; Enzyme activities
-
Long-term tillage and cropping systems affect soil organic carbon components and mineralization in aggregates in semiarid regions
作者:Zhang, Xia;Shen, Shuwei;Xue, Shaoqi;Hu, Yongsheng;Wang, Xudong;Zhang, Xia;Wang, Xudong;Wang, Xudong
关键词:Soil management; Soil aggregate; Carbon chemical component; Fourier transform infrared; Carbon sequestration; Carbon mineralization kinetics
-
A generalized method for retrieving global daily mean land surface temperature from polar-orbiting thermal infrared sensor instantaneous observations
作者:Li, Jia-Hao;Li, Jia-Hao;Li, Zhao-Liang;Li, Zhao-Liang;Liu, Xiangyang;Duan, Si-Bo;Si, Menglin;Shang, Guofei;Zhang, Xia
关键词:daily mean land surface temperature; polar-orbiting thermal infrared sensor; linear regression