نتایج جستجو برای: salinity of wetland

تعداد نتایج: 21167564  

2011
TONGGUI WU MING WU MUKUI YU JIANGHUA XIAO

Plant group classification relation to soil environmental characteristics was monitored in Hangzhou Bay coastal wetland, China. 18 taxa, belonging to 17 genus and 7 family were recorded, and classified into five groups by TWINSPAN viz A, Scirpus mariqueter group, B, Spartina alterniflora group, C, Phragmites communis group, D, Tamarix chinensis P. communis group, and E, Salix matsudana Imperata...

Journal: :American journal of botany 2005
José L Espinar Luis V García Luis Clemente

The effect of salinity level and extended exposure to different salinity and flooding conditions on germination patterns of three salt-marsh clonal growth plants (Juncus subulatus, Scirpus litoralis, and S. maritimus) was studied. Seed exposure to extended flooding and saline conditions significantly affected the outcome of the germination process in a different, though predictable, way for eac...

2005
Christian Langevin Eric Swain Melinda Wolfert

The SWIFT2D surface-water flow and transport code, which solves the St Venant equations in two dimensions, was coupled with the SEAWAT variable-density ground-water code to represent hydrologic processes in coastal wetlands and adjacent estuaries. A sequentially coupled time-lagged approach was implemented, based on a variable-density form of Darcy’s Law, to couple the surface and subsurface sy...

Journal: Desert 2016

     Miqan desert wetland is one of the 10 major wetlands in Iran. In 2008, it has changed into a non-hunting area due to its fragile ecology.  Evaluating the change trends of the wetland and the use of its surrounding lands is of high significant in order to maintain the wetlands. In this regard, the satellite images of the ETM+ and OLI sensors of years 2002 and 2013 were initially collected. ...

2010
JIAHONG LI JOHN E. ERICKSON

Wetlands evapotranspire more water than other ecosystems, including agricultural, forest and grassland ecosystems. However, the effects of elevated atmospheric carbon dioxide (C02) concentration (Ca) on wetland evapotranspiration (ET) are largely unknown. Here, we present data on 12 years of measurements of ET, net ecosystem C02 exchange (NEE), and ecosystem water use efficiency (EWUE, i.e. NEE...

2017
Dylan Chapple Iryna Dronova

Tidal wetland restoration efforts can be challenging to monitor in the field due to unstable local conditions and poor site access. However, understanding how restored systems evolve over time is essential for future management of their ecological benefits, many of which are related to vegetation dynamics. Physical attributes, such as elevation and distance to channel play important roles in go...

Journal: :Land 2023

In semiarid regions, soil salinity, like drought, restricts crop productivity, causing food shortages among most inhabitants—the smallholder subsistence farmers. Seasonal wetlands formed in these regions during the rainy seasons could be utilised for rice (Oryza spp.) cultivation to increase security, but is sensitive salinity. Field and greenhouse-pot experiments were performed at University o...

Journal: :Tree physiology 1996
James A. Allen S. Reza Pezeshki Jim L. Chambers

Coastal wetlands of the southeastern United States are threatened by increases in flooding and salinity as a result of both natural processes and man-induced hydrologic alterations. Furthermore, global climate change scenarios suggest that, as a consequence of rising sea levels, much larger areas of coastal wetlands may be affected by flooding and salinity in the next 50 to 100 years. In this p...

Journal: :تحقیقات اقتصادی 0
سید پرویز جلیلی کامجو دانشجوی دکتری اقتصاد دانشکدة علوم اداری و اقتصاد دانشگاه اصفهان رحمان خوش اخلاق استاد دانشکدة علوم اداری و اقتصاد دانشگاه اصفهان سعید صمدی دانشیار دانشکدة علوم اداری و اقتصاد دانشگاه اصفهان غلامحسین کیانی استاد دانشکدة علوم اداری و اقتصاد دانشگاه اصفهان

the purpose of this study is estimate the protection value of gavkhony wetland ecosystem attributes with use of choice experiment approach and conditional logit model. data needed extracted from six different choice experiment questionnaires filled out by 500 random households in isfahan and varzane city. each questionnaire contained 72 hypothetical policies (options), 36 choice sets, 2442 obse...

2016
Haley Holladay JoAnn Holloway Christopher Swarzenski Ken Krauss

The relationship between microbial communities, salinity, soil depth, and time was evaluated using phospholipid fatty acids (PLFA) collected from coastal wetlands in Louisiana post hurricanes Katrina and Rita. The three marsh types studied included freshwater and intermediate marshes from the Jean Lafitte Preserve as well as two brackish marsh sites from the Caernarvon Basin. The Caernarvon Bas...

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