搜索结果: 1-9 共查到“地球科学总论 peatlands”相关记录9条 . 查询时间(0.046 秒)
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...
Effects of N and P fertilization on the greenhouse gas exchange in two northern peatlands with contrasting N deposition rates
N and P fertilization greenhouse gas exchange northern peatlands N deposition rates
2010/1/21
Peatlands are important ecosystems in the context of biospheric feedback to climate change, due to the large storage of organic C in peatland soils. Nitrogen deposition and increased nutrient availabi...
Methanotrophy potential versus methane supply by pore water diffusion in peatlands
Methanotrophy potential versus methane pore water diffusion peatlands
2010/1/20
Low affinity methanotrophic bacteria consume a significant quantity of methane in wetland soils in the vicinity of plant roots and at the oxic-anoxic interface. Estimates of the efficiency of methanot...
Towards spatial assessment of carbon sequestration in peatlands:spectroscopy based estimation of fractional cover of three plant functional types
spatial assessment carbon sequestration peatlands fractional cover
2010/1/19
Peatlands accumulated large carbon (C) stocks as peat in historical times. Currently however, many peatlands are on the verge of becoming sources with their C sequestration function becoming sensitive...
Using MODIS derived fPAR with ground based flux tower measurements to derive the light use efficiency for two Canadian peatlands
MODIS derived fPAR flux tower measurements light use efficiency Canadian peatlands
2010/1/19
We used satellite remote sensing data; fraction of photosynthetically active radiation absorbed by vegetation (fPAR) from the Moderate Resolution Imaging Spectroradiometer (MODIS) in combination with ...
Meeting the challenge of mapping peatlands with remotely sensed data
challenge peatlands remotely sensed data
2010/1/18
Boreal peatlands play a major role in carbon and water cycling and other global environmental processes but understanding this role is constrained by inconsistent representation of peatlands on, or om...
Peatlands and the carbon cycle:from local processes to global implications – a synthesis
Peatlands carbon cycle local processes global implications
2010/1/18
Peatlands cover only 3% of the Earth's land surface but boreal and subarctic peatlands store about 15–30% of the world's soil carbon (C) as peat. Despite their potential for large positive feedbacks t...
Do we miss the hot spots?–The use of very high resolution aerial photographs to quantify carbon fluxes in peatlands
hot spots high resolution aerial photographs carbon fluxes peatlands
2010/1/18
Accurate determination of carbon balances in heterogeneous ecosystems often requires the extrapolation of point based measurements. The ground resolution (pixel size) of the extrapolation base, e.g. a...
Climate-driven enrichment of pollutants in peatlands
Climate-driven enrichment pollutants peatlands
2010/1/14
Peatlands play an important role for global carbon dynamics, acting as a sink or source depending on climate. Such changes imply a series of additional effects because peatlands are also an important ...