Based on the water balance theory,a water cycle model of farmland ecosystem,effected by both nature and irrigation in subtropics hilly area in Eastern China was built.
With SZF 2.8—0,7/95/70=H hot-water boiler being taken as an example the authors have discussed a calculation method for a complicated loop water circulation.
We apply the distributed hydrological model(WEP-L model) with physical mechanism to simulate hydrological cycle under the different conditions of Sanchuanhe basin as a case study,and analyze the quantitative influence of the different factors such as precipitation,water use and underlying surface on the evolution of water resources on the basis.
It is proved that the research of GRACE timely variable gravity field can provide credibility evidence for the study of global hydrological cycle observation and its effect on the climate alteration.
Starting from the technical analysis on the large-scale hot-water boiler, this paper emphatically expounds the boiler structure, boiler combustion modes, boiler water recycle modes and boiler operation situation, and makes preliminary survey and comparative analysis of these boilers connecting with the domestic demands and market situation.
Starting from the technical analysis on the large-scale hot-water boiler, this paper emphatically expounds the boiler structure, boiler combustion modes, boiler water recycle modes and boiler operation situation, and makes preliminary survey and comparative analysis of these boilers connecting with the domestic demands and market situation.
Canopy interception play a significant role in water cycle and nutrient cycle processes in ecosystem, and was an important part of evaporation from the Chinese fir plantation ecosystem, being up to 27.2%.
In this paper, based on a long-term monitoring of water cycle in the water and soil conservation forest stands of Pinus tabulaeformis and Robinia pseudoacacia, the soil moisture deficit is calculated.
The role of the phase transition and interphase transfer of water in its circulation are considered and accounted for in the proposed unified scheme of the natural water cycle.
C band digital weather radar observed data, collected from the Huaihe River Basin Energy and Water Cycle Experiment (HUBEX), are used for the study of correction of hydrometeor attenuation in the Fuyang region.
During the Meiyu period in June and July of 1998, intensified field observations have been carried out for the project "Huaihe River Basin Energy and Water Cycle Experiment (HUBEX)".
It is shown that low heat flow, absence of progressive subsidence of the accretionary prism, open character of the system relative to water circulation, and heterogeneity of the sedimentary sequence hindered the successive development of epigenesis.
Based on the study of heavy minerals, new indicators are proposed for the ice-rafted material and main systems of surficial water circulation (gyres of the Beaufort Sea and Polar and Siberian currents of the Transpolar drift).
The main attention is given to the analysis of water circulation and sediment dynamics in the Gironde Estuary under the joint impact of seasonal river flow and tidal fluctuations.
We obtained a seasonal and spatial distribution of water vapor that showed better agreement with the TES data and, thus, indicated the stability of the hydrological cycle on Mars.
We obtained a seasonal and spatial distribution of water vapor that showed better agreement with the TES data and, thus, indicated the stability of the hydrological cycle on Mars.
The conclusion is made that there are statistically significant variations in the annual runoff of the Volga, caused by both natural-climatic and anthropogenic variations in the hydrological cycle.
Statistically significant changes were found to exist in the dynamics of Neman River annual runoff due to both natural-climatic and anthropogenic variations in the hydrological cycle.
The efficiency of traditional agrotechnical practices (autumn treatment of soil and its mulching with plant residues (straw)) for the control of the hydrological cycle on small catchment areas during spring snow melting is assessed.
It is shown how physical constraints for the system design often set a limit for the sophistication of the water recycle network and thereby also a limit for how sophisticated the method for system design should be.
水循环
water cycle
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