文献类型: 外文期刊
作者: Liu, Yu 1 ; Gao, Bingbo 1 ; Pan, Yuchun 1 ;
作者机构: 1.Beijing Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China
2.Natl Engn Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China
关键词: gross grain output;grain production;empirical mode decomposition;variance decomposition;China
期刊名称:OUTLOOK ON AGRICULTURE ( 影响因子:1.877; 五年影响因子:1.648 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: The characteristics of gross grain output between 1949 and 2012 and the effects of different crops and production regions on fluctuations between 1978 and 2012 in China were analysed using empirical mode decomposition and variance decomposition methods. Grain output has shown a tendency to increase since 1970. Rice, wheat and corn were the primary crops contributing to gross grain output fluctuation, with rice playing the most significant role. The middle-lower reaches of the Yangtze River contributed most to output fluctuation, followed by the northeast and Huang-Huai-Hai regions. The findings provide important evidence concerning trends in grain production in China.
- 相关文献
作者其他论文 更多>>
-
Recognition of maize seedling under weed disturbance using improved YOLOv5 algorithm
作者:Tang, Boyi;Zhao, Chunjiang;Tang, Boyi;Zhou, Jingping;Pan, Yuchun;Qu, Xuzhou;Cui, Yanglin;Liu, Chang;Li, Xuguang;Zhao, Chunjiang;Gu, Xiaohe;Li, Xuguang
关键词:Object detection; Maize seedlings; UAV RGB images; YOLOv5; Attention mechanism
-
Extraction of the upright maize straw by integrating UAV multispectral and DSM data
作者:Chao, Aosheng;Xing, Enguang;Gao, Yunbing;Li, Cunjun;Qin, Yuan;Zhu, Chengyang;Liu, Yu;Chao, Aosheng;Zhu, Chengyang;Zhu, Qingwei
关键词:Upright maize straw; UAV; New straw index; Spectral characteristics; Digital surface model
-
Estimation of SOC using VNIR and MIR hyperspectral data based on spectral-to-image transforming and multi-channel CNN
作者:Tang, Aohua;Yang, Guijun;Li, Zhenhong;Chen, Weinan;Zhang, Jing;Tang, Aohua;Yang, Guijun;Pan, Yuchun;Liu, Yu;Long, Huiling;Chen, Weinan;Zhang, Jing;Yang, Yue;Yang, Xiaodong;Xu, Bo;Yang, Yue
关键词:MIR spectral; Multi-channel-CNN; SIT; Soil organic carbon; VNIR spectral
-
Using UAV-based multispectral images and CGS-YOLO algorithm to distinguish maize seeding from weed
作者:Tang, Boyi;Zhou, Jingping;Zhao, Chunjiang;Pan, Yuchun;Lu, Yao;Liu, Chang;Ma, Kai;Sun, Xuguang;Gu, Xiaohe;Tang, Boyi;Zhou, Jingping;Zhang, Ruifang
关键词:Object detection; Maize seedlings; Weed disturbance; YOLO; UAV multispectral images
-
Two sexually compatible monokaryons from a heterokaryotic Lentinula edodes strain respond differently to heat stress
作者:Guo, Yuan;Gao, Qi;Liu, Yu;Wang, Shouxian;Jiao, Wenyu;Zhang, Yajie;Tan, Meiting
关键词:
Lentinula edodes ; heat stress response; metabolomics; transcriptomics; multi-omics integration -
A machine learning system to evaluate physiological parameters and heat stress for sows in gestation crates
作者:Zhuang, Yanrong;Ji, Hengyi;Liu, Yu;Li, Shulei;Wang, Chaoyuan;Teng, Guanghui;Zhuang, Yanrong;Ji, Hengyi;Liu, Yu;Li, Shulei;Wang, Chaoyuan;Teng, Guanghui;Zhuang, Yanrong;Ji, Hengyi;Liu, Yu;Li, Shulei;Wang, Chaoyuan;Teng, Guanghui;Zhuang, Yanrong;Zhuang, Yanrong;Cao, Mengbing;Zhang, Jinrui
关键词:Sow; Heat stress; Physiological parameters prediction; Machine learning; LabVIEW
-
Improving Winter Wheat Yield Estimation Under Saline Stress by Integrating Sentinel-2 and Soil Salt Content Using Random Forest
作者:Lu, Chuang;Dong, Shiwei;Li, Yinkun;Lu, Chuang;Dong, Shiwei;Liu, Yu;Pan, Yuchun;Yang, Maowei
关键词:yield estimation; saline stress; growth period; vegetation index; salt index; random forest



