Impact of the shrinking winter wheat sown area on agricultural water consumption in the Hebei Plain
Agriculture ; China ; Crop ; Hebei ; Irrigation ; Maize ; Season ; Water resources ; Wheat ; Winter
This article examines the impact of the shrinking winter wheat sown area on agricultural water consumption in the Hebei Plain (China). The results are as follows. 1)The sown areas of winter wheat in the 11 cities in the Hebei Plain all shrunk during
the study period, the most serious being in the Beijing-Tianjin-Tangshan metropolitan agglomerate. 2) The irrigation water resources demanded by the winter wheat-summer maize double cropping system ranged from 400 mm to 530 mm, while those demanded
by the spring maize single cropping system ranged only from 160 mm to 210 mm. 3) The water resources conserved as a result of the winter wheat sown area shrinkage during the study period were about 15.96×108 m3/a, accounting for 27.85% of those provided
High-mortality days during the winter season : comparing meteorological conditions across 5 US cities
Atmospheric pressure ; Bioclimatology ; Health ; Human bioclimatology ; Meteoropathology ; Mortality ; Precipitation ; Temperature ; United States of America ; Weather type ; Winter
An attempt to dendroclimatic reconstruction of winter temperature based on multispecies tree-ring widths and extreme years chronologies (example of Upper Silesia, Southern Poland)
conditions in the study area allow sustainable palsa development. A ground penetrating radar (GPR) survey of the palsa under both winter and summer conditions revealed its internal structure and the size of its frozen core. GPR imaging in summer detected
the upper peat/core boundary, and imaging in winter detected a deep reflector that probably represents the lower core boundary. This indicates that only a combined summer and winter GPR survey completely reveals the lateral and vertical extent of the frozen
of selected soil properties according to the data during the sowing–germination period of winter wheat in 2012 autumn. The results indicated that the tillage treatments affected soil properties and wheat germination. It is highlighted that : No-till provided
higher field capacity, field water content and infiltration rate; Soil bulk density and penetration resistance were lower in conventional tillage; No-till practice increased winter wheat germination.
Climatic trend ; Interannual variability ; North Atlantic oscillation ; Romania ; Snow ; Snow cover ; Teleconnection ; Temperature ; Time series ; Winter
sediments. Survey results showed that organic carbon concentration in summer were higher than in the winter. An elevated trend of TOC occurred along the river to the Humen outlet in both surveys, and the highest mean values of dissolved and particular
organic carbon (DOC)and (POC) were observed in the urban deltaic region in summer flood flow. Results suggest that POC in the 3 zones of upstream-delta-outlet dominantly came from riverbank soil, phytoplankton and agricultural C3 plants in winter, whereas
This study aimed to investigate soil organic carbon (SOC) dynamics in topsoil (5 cm) and subsoil horizons (40 and 80 cm) at shoulderslope and footslope positions in a toposequence in a Danish winter wheat field. In addition, SOC was quantified
by muddy laminae. The construction of the sand sheet is controlled by meteorological seasonal changes : the source area, the San Juan river alluvial fan, receives sediment by thaw-waters in spring–summer; in fall–winter, when the water table lowers
Air temperature ; Climate ; Climatic trend ; Cluster analysis ; Freeze-thaw cycle ; Freezing ; Society-environment relationship ; Spatial distribution ; Temperature ; United States of America ; Winter
Levees were the most easily recognised depositional forms developed after 2 subsequent floods that occurred in summer 2010 and winter 2010/2011 in the Warta River valley. The aim of this study was to investigate changes in the grain size
be examined especially in winter (53 m per decade). The diversity of trend magnitudes for annual and seasonal series can also be detected at a spatial view, but generally 0°C isotherm height correlated well with surface air temperature.
Data from four field measurements of the snow water equivalent (SWE) carried out in two winter seasons were assessed by ten interpolation methods. Measurements from both snow accumulation and snowmelt periods were evaluated. The ability of methods
Every week during the winter months, the Czech Hydrometeorological Institute (CHMI) provides up to date information on the snow water equivalent present in Czech regions and especially within important hydrological basins. The position of the zero