Net water vapour exchange over a mixed needle and broad-leaved forest in Changbai Mountain during autumn
Autumn ; China ; Evapotranspiration ; Forest ; Global change ; Heat flow ; Jilin ; Land atmosphere interaction ; Mountain ; Radiation ; Water vapor
Net water vapour exchange and environmental control over the forest were examined from September 1 to October 31 in 2002. To quantify the seasonal dynamics, the transition period was separated into leafed, leaf falling and leafless stages according
to the development of leaf area. The results showed that : seasonal variation of water vapour exchange was mainly controlled by net radiation; magnitude of water vapour flux decreased remarkably during autumn. Daily mean of water vapour exchange for leafed, leaf
falling and leafless stage was respectively estimated. The budget of water vapour exchange during autumn was also estimated.
Effect of peatland drainage, harvesting, and restoration on atmospheric water and carbon exchange
The aim of this paper is to highlight and contrast the suite of processes governing microclimatic and gas exchange processes on natural and abandoned peatlands. Specifically, it determines the effects of peatland mining, abandonment, natural
regeneration, and restoration on evapotranspiration, ground heat flux, net ecosystem CO2 exchange, and the atmosphere-peatland exchange of CH4.
Untersuchung der Wasseraustauschprozesse im Bereich der Darsser Schwelle. (Investigation of waterexchange processes across the Darss Sill)
The objectives of the multiyear complex research programme for investigating the physics of waterexchange across the Darss Sill have been derived from the present knowledge of this process. The programme and first results of the pilot experiment
(Water Experiment across the Darss Sill), carried out in August-September 1980, are presented. (HL).
Evolution characters of waterexchange abilities between Dongting Lake and Yangtze River
China ; Dam ; Hunan ; Hydraulic works ; Hydrology ; Lake ; Stream ; Waterexchange ; Yangtze
By using field-survey hydrological data of the related control stations in Dongting Lake and the Yangtze River mainstream in 1951–2010, the evolution characters of waterexchange abilities between the two water bodies and their response
the interaction of the river-lake hydrodynamic force. So there is an in-line growth or decline relation between the river-lake waterexchange ability and the river-lake waterexchange amount.
to the operation of the Three Gorges Reservoir (TGR) from different time scales are analyzed based on their hydraulic relations. The results highlight that there is a complex hydrological and hydraulic exchange process between Dongting Lake and Yangtze River under
The distribution of solute processes on an acid hillslope and the delivery of solutes to a stream : I. exchangeable bases
Catena ; England ; Hydrochemistry ; Leaching ; Podsol ; Soil ; Solution load ; Somerset ; Spatial variation ; United Kingdom ; Water quality ; Watershed
This paper aims to identify the spatial distribution of exchangeable base cations in soils on an acid hillslope, (Quantock Hills, Somerset, UK), and to investigate possible cation release processes from slope soils to the stream. The basic
assumption underlying this research is that the amount of exchangeable cations in soils reflects the nutrient stores and cation leaching processes across the slope where vegetation and parent materials are similar.
Arctic Region ; Barents Sea ; Fluvial water ; Heat exchange ; Marine hydrology ; Salinity ; Sea water ; Seasonal variation ; Waterexchange ; Water mass ; Water temperature ; White Sea
Atmosphere ; Climatic variation ; Climatology ; Dynamic model ; Energy balance ; Evaporation ; Hydrology ; Hydrosphere ; Model ; Precipitation ; Stochastic model ; Thermal exchange ; Water cycle;Water circulation
The ways of incorporation of hydrologic cycle elements into the dynamic-stochastic heat and waterexchange climate model are considered. Such approach enables to identify the main sources of precipitation climatologic variability.
A nomogram to estimate the heat-exchange coefficient at the air-water interface as a function of wind speed and temperature: a critical survey of some literature
Salt marshes reduces oxidised nitrogenous compounds to ammonium and particulate nitrogen and export these reduced forms to coastal waters. The internal demands exceed the net imputs of nitrogen by rain, groundwater flow and fixation, suggesting very
active uptake conversion, release and recycling of nitrogen within a marsh ecosystem. Nitrogen losses are mainly through tidal exchanges and denitrification, and these two outputs balance the gains. The chemical exchanges among uplands, marshes
and coastal water are important in structuring these ecosystems.
Ecosystem ; Experimentation ; Grassland ; Heat exchange ; Roughness ; Soil moisture ; Surface temperature ; Sweden ; Temperature ; Wind ; Wind speed
The aim of this study was to analyse wind, temperature and humidity profiles, surface radiation temperature, and eddy correlation fluxes of momentum and heat over a grass field in order to obtain a better parameterisation of exchange processes over
such a surface. The study was performed under summer conditions over a formerly cultivated, uniform and well-watered field of tall grass in central Sweden.
Osobennosti i zakonomernosti formirovanija vod susi. Processy vodoobmena. (Peculiarities and regularities of land water formation. Waterexchange processes)
Asian part of Russia ; Heat exchange ; Hydrological regime ; Sakhalin ; Sea of Japan ; Sea water ; Seasonal variability ; Spatial structure ; Waterexchange ; Water mass ; Water temperature