搜索结果: 1-15 共查到“理学 wetlands”相关记录31条 . 查询时间(0.2 秒)
Louisiana wetlands struggling with sea-level rise four times the global average
Louisiana wetlands struggling sea-level rise four times global average
2017/3/30
Without major efforts to rebuild Louisiana’s wetlands, particularly in the westernmost part of the state, there is little chance that the coast will be able to withstand the accelerating rate of sea-l...
Consequences of climate change on the ecogeomorphology of coastal wetlands
coastal wetlands climate change
2016/5/18
Climate impacts on coastal and estuarine systems
take many forms and are dependent on the local conditions,
including those set by humans. We use a biocomplexity
framework to provide a perspective ...
An interface of drainage division for modeling wetlands and riparian buffers in agricultural watersheds
Drainage division DEM Geographic Information System GIS wetlands riparian buffers concentrated flow
2015/8/13
In a complex watershed, isolated wetlands, riparian wetlands and riparian buffers provide important functions such as flood attenuation and water quality improvement. For conservation purposes, it is ...
Methane-eating microorganisms help regulate emissions from wetlands
Methane-eating microorganisms regulate emissions wetlands
2015/7/13
Though they occupy a small fraction of Earth's surface, freshwater wetlands are the largest natural source of methane emitted into the atmosphere. New research identifies an unexpected process that ac...
NITROGEN AND PHOSPHORUS CYCLING IN MIDWESTERN AGRICULTURAL WETLANDS IN RESPONSE TO ALTERED HYDROLOGIC REGIMES
Wetland soil Midwest agriculture
2015/1/16
The transfer of nutrients from US Midwest croplands into surface waters causes eutrophication and a decline in water quality. Temporary retention of nutrient-rich runoff in constructed wetlands can he...
An interface of drainage division for modeling wetlands and riparian buffers in agricultural watersheds
Drainage division DEM Geographic Information System
2015/1/7
In a complex watershed, isolated wetlands, riparian wetlands and riparian buffers provide important functions such as flood attenuation and water quality improvement. For conservation purposes, it is ...
DYPTOP: a cost-efficient TOPMODEL implementation to simulate sub-grid spatio-temporal dynamics of global wetlands and peatlands
global wetlands peatlands
2014/12/19
Simulating the spatio-temporal dynamics of inundation is key to understanding the role of wetlands under past and future climate change. Earlier modelling studies have mostly relied on fixed prescribe...
Modelling methane emissions from natural wetlands by development and application of the TRIPLEX-GHG model
development and application Modelling methane emissions
2014/12/18
A new process-based model TRIPLEX-GHG was
developed based on the Integrated Biosphere Simulator
(IBIS), coupled with a new methane (CH4) biogeochemistry
module (incorporating CH4 production, oxidat...
GIS based mapping and environmental impact of Wetlands changes in a Riverine district of Bangladesh
Bangladesh Wetlands Changes Management Environmen
2014/11/26
This research is concerned with the GIS based mapping and change of areal extent of
wetlands within two different periods and to identify the causes of change and impact
assessment of wetland chan...
Chemical diversity and spatial variability in myriad lakes in Nhecolaˆndia in the Pantanal wetlands of Brazil
Chemical diversity spatial variability Pantanal wetlands
2014/4/2
Nearly 15,000 shallow, saline or freshwater lakes and ponds coexist in close proximity in the Nhecolaˆndia, a
24,000 km2
subregion of the Pantanal wetland in Brazil. This study aims to understa...
Inland wetlands with sulfidic sediments provide ideal conditions for Akaganéite formation
Inland wetlands sulfidic sediments provide ideal conditions Akaganéite formation
2012/3/30
The prevalence of sulfidic sediments in inland wetlands has been recognized in the last few years in many parts of the world including Australia (Lamontagne et al., 2006). Under conditions of very hig...
Isotope composition of bulk carbon in replicated Sphagnum peat cores from three Central European high-elevation wetlands
peat Sphagnum carbon C sequestration isotopes
2017/8/9
Several processes may contribute to systematic downcore trends in δ13C of bulk Sphagnum peat. Whereas changes in water availability during C assimilation may change δ13C values in both a negative and ...
Uncertainties in modelling CH4 emissions from northern wetlands in glacial climates：effect of hydrological model and CH4 model structure
northern wetlands glacial climates hydrological model CH4 model structure
2009/12/3
Methane (CH4) fluxes from northern wetlands may have influenced atmospheric CH4 concentrations at climate warming phases during the last 800 000 years and during the present global warming. Including ...
Assessment of Wetlands in Kuala Terengganu District Using Landsat^TM
Wetland Remote sensing Rate of change Setiu
2009/12/3
Wetland cover mapping is very important in identifying its areal extent and the rate of change over time. This studyaims to map the areal extent and its rate of change in Kuala Terengganu district whi...
Using official map data on topography, wetlands and vegetation cover for prediction of stream water chemistry in boreal headwater catchments
water chemistry dissolved organic carbon temporal resolution
2009/4/28
A large part of the spatial variation of stream water chemistry can be related to inputs from headwater streams. In order to understand and analyse the dominant processes taking place in small and het...