Influence of the shallow groundwater table on the groundwater N2O and direct N2O emissions in summer maize field in the North China Plain

2021 ◽  
pp. 149495
Author(s):  
Zhao Li ◽  
Qiuying Zhang ◽  
Yunfeng Qiao ◽  
Peifang Leng ◽  
Qian Zhang ◽  
...  
Keyword(s):  
North China Plain ◽  
North China ◽  
Shallow Groundwater ◽  
Groundwater Table ◽  
N2o Emissions ◽  
Summer Maize ◽  
The North ◽  
The North China Plain ◽  
Maize Field ◽  
Shallow Groundwater Table

Winter Wheat and Summer Maize Roots in Agro‐Ecosystems on the North China Plain

2021 ◽  
pp. 271-288
Author(s):  
Fadong Li ◽  
Zhao Li ◽  
Yunfeng Qiao ◽  
Nong Zhu ◽  
Kun Du ◽  
...  
Keyword(s):  
Winter Wheat ◽  
North China Plain ◽  
North China ◽  
Summer Maize ◽  
The North ◽  
The North China Plain ◽  
Maize Roots

Simulation and prediction of shallow groundwater depth in the North China Plain based on regional periodic characteristics

2021 ◽  
Vol 80 (18) ◽  
Author(s):  
Long Sun ◽  
Yongbing Zhang ◽  
Haiyang Si ◽  
Tema Koketso Ealotswe ◽  
Lei Wei ◽  
...  
Keyword(s):  
North China Plain ◽  
North China ◽  
Shallow Groundwater ◽  
Groundwater Depth ◽  
The North ◽  
The North China Plain

scholarly journals Does Crop Rotation Enhance Groundwater Health? A Review of the Winter Wheat Fallow Policy in the North China Plain

Water ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 2416
Author(s):  
Ming Lei ◽  
Yuqian Zhang ◽  
Yuxuan Dang ◽  
Xiangbin Kong ◽  
Jingtao Yao
Keyword(s):  
Winter Wheat ◽  
Water Consumption ◽  
North China Plain ◽  
North China ◽  
Shallow Groundwater ◽  
Agricultural Water ◽  
The North ◽  
The North China Plain ◽  
The World ◽  
Shallow Groundwater Level

Agricultural water management is a vital component of realizing the United Nation’s Sustainable Development Goals because of water shortages worldwide leading to a severe threat to ecological environments and global food security. As an agro-intensified irrigation area, the North China Plain (NCP) is the most important grain basket in China, which produces 30%–40% of the maize and 60%–80% of the wheat for China. However, this area has already been one of the largest groundwater funnels in the world due to long-term over-exploitation of groundwater. Due to the low precipitation during the growing period, winter wheat requires a large amount of groundwater to be pumped for irrigation, which consumes 70% of the groundwater irrigation. To alleviate the overexploitation of groundwater, the Chinese government implemented the Winter Wheat Fallow Policy (WWFP) in 2014. The evaluation and summarization of the WWFP will be beneficial for improving the groundwater overexploitation areas under high-intensity irrigation over all the world. So far, there have been few attempts at estimating the effectiveness of this policy. To fill this gap, we assessed the planting area of field crops and calculated the evapotranspiration of crops based on remote-sensed and meteorological data in the key area—Hengshui. We compared the agricultural water consumption before and after the implementation of this policy, and we analyzed the relationship between changes in crop planting structure and groundwater variations based on geographically weighted regression. Our results showed the overall classification accuracies for 2013 and 2015 were 85.56% and 82.22%, respectively. The planting area of winter wheat, as the most reduced crop, decreased from 35.71% (314,053 ha) in 2013 to 32.98% (289,986 ha) in 2015. The actual reduction in area of winter wheat reached 84% of the target (26 thousand ha) of the WWFP. The water consumption of major crops decreased from 2.98 billion m3 of water in 2013 to 2.83 billion m3 in 2015, a total reduction of 146 million m3, and 88.43% of reduced target of the WWFP (166 million m3). The planting changes of winter wheat did not directly affect the change of shallow groundwater level, but ET was positively related to shallow groundwater level and precipitation was negatively related to shallow groundwater levels. This study can provide a basis for the WWFP’s improvement and the development of sustainable agriculture in high-intensity irrigation areas.

scholarly journals Developing sustainable summer maize production for smallholder farmers in the North China Plain: An agronomic diagnosis method

2019 ◽  
Vol 18 (8) ◽  
pp. 1667-1679 ◽  
Author(s):  
Guang-feng CHEN ◽  
Hong-zhu CAO ◽  
Dong-dong CHEN ◽  
Ling-bo ZHANG ◽  
Wei-li ZHAO ◽  
...  
Keyword(s):  
North China Plain ◽  
North China ◽  
Smallholder Farmers ◽  
Summer Maize ◽  
Maize Production ◽  
The North ◽  
The North China Plain ◽  
Diagnosis Method ◽  
Agronomic Diagnosis

scholarly journals The influence of straw returning on N2O emissions from a maize-wheat field in the North China Plain

2017 ◽  
Vol 584-585 ◽  
pp. 935-941 ◽  
Author(s):  
Yizhen Zhou ◽  
Yuanyuan Zhang ◽  
Di Tian ◽  
Yujing Mu
Keyword(s):  
North China Plain ◽  
North China ◽  
N2o Emissions ◽  
Wheat Field ◽  
The North ◽  
The North China Plain
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