below the present Woosung level respectively. Since 6300 years in area of Zhenjiang boring deposited sediments of freshwater marsh, so it seems in Yangtze delta aea no sea level was higher than present one during 5000—6000 years B.P.
Using the methods of sampling in winter and the dividing soil layers in soil profiles, the characteristics of TN, NH + 4 N and NO - 3 N concentration distribution in peat sediments of river bed flood land and valley depression land in Sanjiang Plain where is the most extensive freshwater marsh wetland in China were systematically studied.
Through 4 years continuous field original place observation in the freshwater marsh wetland of Sanjiang Plain, the results showd that marsh wetland was N2O source in winter;
To understand the mechanism and affecting factors of CH_4 emission from freshwater marshes,we studied in situ the CH_4 emission in Sanjiang Plain of Northeast China,and its possible affecting factors.
Annual dynamics of CO_2,CH_4,N_2O emissions from freshwater marshes and affected by nitrogen fertilization were studied in situ in Sanjiang Plain of Northeast China from June 2002 to December 2004,using the static opaque chamber-GC techniques.
In freshwater marshes, WGP abundance, reproduction, body weight and microhabitat use exhibited no seasonal variations, and their herbivory and runway construction activities had no negative effect on vegetation structure and sigmodontine rodents.
below the present Woosung level respectively. Since 6300 years in area of Zhenjiang boring deposited sediments of freshwater marsh, so it seems in Yangtze delta aea no sea level was higher than present one during 5000—6000 years B.P.
Using the methods of sampling in winter and the dividing soil layers in soil profiles, the characteristics of TN, NH + 4 N and NO - 3 N concentration distribution in peat sediments of river bed flood land and valley depression land in Sanjiang Plain where is the most extensive freshwater marsh wetland in China were systematically studied.
Through 4 years continuous field original place observation in the freshwater marsh wetland of Sanjiang Plain, the results showd that marsh wetland was N2O source in winter;
Four different ecotypes of reeds——fresh water swamp reed,salty water swamp reed,lower salt meadow reed and higher salt meadow reed were investigated in the Yellow River Delta.
Field control experiment and laboratory culture experiment were conducted to study the influence of nitrogen input on the freshwater mire carbon stock.
This paper firstly summarizes the advance in the research on each nitrogen input approach. Then it analyzes the issues existed in current research,and points that,in particular,the study of freshwater mire wetland is very weak.
officinalis is a freshwater swamp species that when occurring in association with mangroves occupies low-salinity soil microsites, or alternatively that it possesses mechanisms preventing accumulation of salt in photosynthetic tissues.
In this study, we determined the effects of the 1997-1998 ENSO-related drought on the hydrology and salinity of a Micronesian mangrove ecosystem and an adjacent freshwater swamp.
At the peak of the drought (February 1998), the most dramatic result was a reversal in groundwater flow that sent groundwater from the mangroves upstream toward the freshwater swamp.
An undescribed ascomycete similar to species in the Aliquandostipitaceae (Jahnulales, Dothideomycetes) was collected from submerged wood in a freshwater swamp in Big Cypress National Preserve, Florida.
We compared the dietary composition, feeding preferences, and food selection of the introduced crayfish,Procambarus clarkii in a natural and a transformed freshwater marsh (rice field) in the lower Guadalquivir basin (southern Spain).
We used mark-recapture techniques to estimate the attraction sampling area of baited traps for monitoring density of the crayfish Procambarus alleni in the freshwater marshes of the Florida Everglades.
Tidal freshwater marshes exist at the interface between watersheds and estuaries, and thus may serve as critical buffers protecting estuaries from anthropogenic metal pollution.
淡水沼泽
freshwater marsh
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