A study of soil water movement combining soil water potential with stable isotopes at two sites of shallow groundwater areas in the North China Plain

2009 ◽  
Vol 23 (9) ◽  
pp. 1376-1388 ◽  
Author(s):  
Xianfang Song ◽  
Shiqin Wang ◽  
Guoqiang Xiao ◽  
Zhimin Wang ◽  
Xin Liu ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Soil Water ◽  
North China Plain ◽  
North China ◽  
Water Movement ◽  
Soil Water Potential ◽  
Shallow Groundwater ◽  
The North ◽  
The North China Plain ◽  
Soil Water Movement

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.

Effects of Typical Chemical Agents on Preventing Pollution and Controlling Drought in a Cherry Orchard

2012 ◽  
Vol 550-553 ◽  
pp. 1340-1344
Author(s):  
Ren Kuan Liao ◽  
Pei Ling Yang ◽  
Shu Mei Ren ◽  
Hang Yi ◽  
Long Wang ◽  
...  
Keyword(s):  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
North China Plain ◽  
North China ◽  
Root Zone ◽  
Soil Layer ◽  
The North ◽  
The North China Plain ◽  
Chemical Agents

In the North China plain, serious Non-point-source (NPS) pollution and drought are two great concerns in agricultural production. In our studies, two typical chemical agents ( SAP and FA ) were selected to control drought and pollution in a cheery orchard. Soil water content, nutrient transport in soil profile have been researched. The results showed that the soil water content of treatments with chemical agents increased maximally by 19.4% relative to treatment without chemical agents, and increased by 35.2% for Ammonium-N in 20-60 cm soil layer ( main root zone ). However, in 60-120 cm deeper soil layer, the water leakage of treatments with chemical agents decreased averagely by 15.1% relative to treatment without chemical agents, and increased by 43.8% for Nitrate-N. The chemical agents hold water and nutrient in root zone and thus reducing the risk of pollutant leaching into the underground water. It can be found that treatment ( 150kg/h㎡ SAP + 300 times FA ) is the optimal combination group in all treatments. The chemical prevention technology provided a new guide for controlling drought and reducing NPS pollution in cherry planting in the North China plain.

Root growth and soil water utilization of winter wheat in the North China Plain

2004 ◽  
Vol 18 (12) ◽  
pp. 2275-2287 ◽  
Author(s):  
Xiying Zhang ◽  
Dong Pei ◽  
Suying Chen
Keyword(s):  
Winter Wheat ◽  
Root Growth ◽  
Soil Water ◽  
North China Plain ◽  
North China ◽  
Water Utilization ◽  
The North ◽  
The North China Plain

scholarly journals Evaluation of Groundwater Suitability for Irrigation and Drinking Purposes in an Agricultural Region of the North China Plain

Water ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 3426
Author(s):  
Haipeng Guo ◽  
Muzi Li ◽  
Lu Wang ◽  
Yunlong Wang ◽  
Xisheng Zang ◽  
...  
Keyword(s):  
North China Plain ◽  
North China ◽  
Shallow Groundwater ◽  
Deep Groundwater ◽  
The North ◽  
The North China Plain ◽  
Drinking Purposes ◽  
Groundwater Samples ◽  
Groundwater Suitability ◽  
Groundwater Wells

Groundwater is an irreplaceable resource for irrigation and drinking in the North China Plain, and the quality of groundwater is of great importance to human health and social development. In this study, using the information from 59 groups of groundwater samples, groundwater quality conditions for irrigation and drinking purposes in an agricultural region of the North China Plain were analyzed. The groundwater belongs to a Quaternary loose rock pore water aquifer. The depths of shallow groundwater wells are 20–150 m below the surface, while the depths of deep groundwater wells are 150–650 m. The sodium adsorption ratio (SAR), sodium percentage (%Na), residual sodium carbonate (RSC), magnesium hazard (MH), permotic index (PI) and electrical conductivity (EC) were selected as indexes to evaluate the shallow groundwater suitability for irrigation. What’s more, the deep groundwater suitability for drinking was assessed and the human health risk of excessive chemicals in groundwater was studied. Results revealed that SAR, Na% and RSC indexes indicated the applicability of shallow groundwater for agricultural irrigation in the study area. We found 57.1% of the shallow groundwater samples were located in high salinity with a low sodium hazard zone. The concentrations of fluorine (F−) in 79.0% of the deep groundwater samples and iodine (I−) in 21.1% of the deep groundwater samples exceeded the permissible limits, respectively. The total hazard quotient (HQ) values of fluorine in over half of the deep groundwater samples exceeded the safety limits, and the health risk degree was ranked from high to low as children, adult females and adult males. In addition to natural factors, the soil layer compression caused by groundwater over-exploitation increased the fluorine concentration in groundwater. Effective measures are needed to reduce the fluorine content of the groundwater of the study area.

scholarly journals Soil salinization affected by hydrogeochemical processes of shallow groundwater in Cangzhou City, a coastal region in North China

2021 ◽  
Author(s):  
Jin He ◽  
Qijun Den ◽  
Xuejun Ma ◽  
Xiaosi Su ◽  
Xuemei Ma
Keyword(s):  
Water Table ◽  
North China Plain ◽  
North China ◽  
Salt Content ◽  
Coastal Region ◽  
Shallow Groundwater ◽  
Soil Salinization ◽  
Coastal Areas ◽  
The North ◽  
The North China Plain

Abstract This study sought to further the current understanding on the relationship between soil salinization and groundwater hydrochemical processes. To this effect, 33 soil samples and 64 shallow groundwater samples were collected in Cangzhou City, a coastal region of the North China Plain. Soil salinization showed clear patterns of zonation from inland to coastal areas. The no-salinization or mild-salinization with Cl-SO4 or SO4-Cl types were discovered in the west of Cang County farther from the sea; this was restricted by brackish groundwater with HCO3·SO4-Ca·Na type and the deep water table. With increasing proximity to the coastline, groundwater salinity increased soil salt content and salinization, the effects of which were mainly determined by specific Cl/Br ratios and the seawater mixing index in groundwater. The positive δ18O and δ2H content in groundwater was related to the strong evaporation of groundwater with a shallow water table, indicating that the high soil salinity directly affected relict seawater evaporation. The observed severe-salinization soil and high NO3− concentrations indicate that agricultural activities were non-negligible salt sources in areas close to the sea. The results have relevance in improving saline-alkali soil and utilization of soil resources in the coastal areas in the North China Plain.

Combination of CFCs and stable isotopes to characterize the mechanism of groundwater-surface water interactions in a headwater basin of the North China Plain

2018 ◽  
Vol 32 (11) ◽  
pp. 1571-1587 ◽  
Author(s):  
Shiqin Wang ◽  
Ruiqiang Yuan ◽  
Changyuan Tang ◽  
Xianfang Song ◽  
Matthew Currell ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Surface Water ◽  
North China Plain ◽  
North China ◽  
The North ◽  
The North China Plain
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