Results 11 to 20 of about 23,743 (257)
British Educational Research Journal, EarlyView., 2023 Abstract Children's relationship with time in preschools is an under‐researched area. Young children rarely know how to measure time using a clock, but their experiences of time may contribute to understanding children's well‐being and debates about quality in preschools.
Kristín Dýrfjörð +3 more
wiley +1 more source
A Remote Sensing Model to Determine the Critical Groundwater Depth for Soil Salinization
Guan'gai paishui xuebao, 2022 【Objective】 Evaporation of groundwater via capillary rise could result in solute accumulation in the proximity of the soil surface, which increases steadily when the groundwater table rises above a critical depth.
WANG Qingming +3 more
doaj +1 more source
Applied Sciences, 2020 The water cycle in the key agricultural and pastoral zones (KAPZs) is an important factor for maintaining the stability of the ecosystem. Groundwater collection and lateral seepage are indispensable parts of the water cycle, and it is difficult to ...
Teng Niu +7 more
doaj +1 more source
Guan'gai paishui xuebao, 2022 【Objective】 Groundwater level in coastal saline-alkaline areas changes frequently due to the impact of tides. The associated water and salt movement in soil is hence more complicated than in other regions.
ZHAO Junhan +3 more
doaj +1 more source
Quantifying uncertainty in groundwater depth from sparse well data in the California Central Valley
Environmental Research Letters, 2020 Groundwater is a critical freshwater resource for irrigation in the California Central Valley, particularly in times of drought. Groundwater depth has dropped rapidly in California’s overdrafted basins, but irregular monitoring across space and time ...
Amanda N. Quay +2 more
doaj +1 more source
Hydrothermal transfer and bare soil evaporation in surface-groundwater systems in semi-arid areas
Shuiwen dizhi gongcheng dizhi, 2021 The research on the mechanism of hydrothermal transfer and transformation and bare soil evaporation is of great significance for water balance and surface energy transformation in surface-groundwater systems.
Zhitong MA +6 more
doaj +1 more source
Groundwater depth alters soil nutrient concentrations in different environments in an arid desert
Frontiers in Environmental Science, 2022 Soil nutrients are vital for plant growth and survival and present a crucial role in terrestrial function and productivity. However, little is known about the effect mechanism of groundwater table on soil nutrients in an arid desert ecological system ...
Bo Zhang +30 more
doaj +1 more source
Effect of the groundwater fluctuation process on crop growth in Shijin irrigation district
Water Policy, 2022 To achieve the stability of grain production, it is necessary to analyze the impact of groundwater change on crop yield. In this paper, the AquaCrop model was established in the Shijin irrigation district.
Li Fawen, Liu Yutong, Fu Jun
doaj +1 more source
On the extinction depth of freezing-induced groundwater migration
Journal of Hydrology, 2023 Although water table recessions associated with seasonal freezing have been widely reported, the conditions that groundwater could respond to seasonal freezing are poorly known. Based on 30 records of winter-time water table recessions reported in the literature, we find the mean water table recession increases from sand to loam to silt to clay.
Xiao-Wei Jiang +7 more
openaire +2 more sources
The Effects of Climate Change and Anthropogenic Activities on Groundwater in Irrigation District
Guan'gai paishui xuebao, 2022 【Background and objective】 Groundwater is the most important water resource for agricultural production in many regions around the world and its spatiotemporal changes are affected by a multitude of natural and anthropogenic factors.
ZHANG Yan +8 more
doaj +1 more source