Titlebook: ;

確定方向

使無效

,Diffuse Flux of Greenhouse Gases — Methane and Carbon Dioxide — at the Sediment-Water Interface of 07 cores. Concentrations of methane in the surface (2 ± 1.7 cm, n=107) sediment porewater in 4 oligotrophic lakes was in the order of 0.04 ± 0.03 mM (0–0.14, n=25), 0.24 mM in one oligotrophic reservoir to high values of 1.4 ± 0.96 mM (0–2.8, n=18) in 5 eutrophic-hypereutrophic lakes and 1.4 ± 1.0 m

吹牛大王

leniency

安心地散步

GHG Emissions from Boreal Reservoirs and Natural Aquatic Ecosystems,adian boreal region from 1993 to 2003. Fluxes were obtained with a floating chamber connected to an automated NDIR or a FTIR instrument. The results show a temporary increase in CO. and CH. fluxes, followed by a gradual return to values comparable to those observed in natural aquatic ecosystems (lak

Asparagus

CO2 Emissions from Semi-Arid Reservoirs and Natural Aquatic Ecosystems,l 2003. Fluxes were obtained with a floating chamber connected to an automated NDIR instrument. The results showed a strong similarity between lakes and reservoirs, as is also the case in boreal regions. The values ranged from ?1500 to 10800 mg CO.·m.·d. for both natural systems and reservoirs. Thes

CRUE

,A Comparison of Carbon Dioxide Net Production in Three Flooded Uplands (FLUDEX, 1999–2002) and a Flears and NCP from a flooded wetland (ELARP) over 12 years (2 year pre-flooding, 10 years post-flooding). The 3 flooded upland areas had been chosen to have differing amounts of carbon stored in soils and vegetation. Estimates of NCP ranged from 33–55 mmole·m.·d. in the first year and decreased stead

祖?zhèn)?/a>

absorbed

Collected

Production of GHG from the Decomposition of , Inundated Phytomass and Soil,vegetation and soil samples originating from the James Bay territory over a period of approximately one year. Controlled laboratory conditions were set for water temperature (4–22°C), pH (4.5–7.0) and dissolved oxygen concentration (< 2 mg·L. and > 2 mg·L.). These conditions covered the range of con