نتایج جستجو برای: boojagh wetland

تعداد نتایج: 10235  

2017
Zhiwei Ge Ran An Shuiyuan Fang Pengpeng Lin Chuan Li Jianhui Xue Shuiqiang Yu

Aquatic plants play an essential role and are effective in mitigating lake eutrophication by forming complex plant-soil system and retaining total nitrogen (TN) and phosphorus (TP) in soils to ultimately reduce their quantities in aquatic systems. Two main vegetation types (Phragmites australis community and P. australis + Typha latifolia community) of Qin Lake wetland were sampled in this stud...

2011
SIOBHAN FENNESSY CHRISTOPHER CRAFT

The Glaciated Interior Plains historically supported a broad variety of wetland types, but wetland losses, primarily due to agricultural drainage, range from 50% to 90% of presettlement area. Wholesale land use change has created one of the most productive agricultural regions on earth, but wetland conversion has also led to the loss of the ecosystem services they provide, particularly water qu...

2011
Achyut R. Adhikari Kumud Acharya Seth A. Shanahan Xiaoping Zhou

Increased water use associated with rapid growth in the Las Vegas Valley has inadvertently led to the creation of unique wetland systems in Southern Nevada with an abundance of biological diversity. Constructed and naturally created wetlands in the Las Vegas Valley watershed were studied to characterize and understand their potential role for improving ecosystem services (i.e., water purificati...

2016
ELLEN R. HERBERT PAUL BOON AMY J. BURGIN SCOTT C. NEUBAUER RIMA B. FRANKLIN MARCELO ARDÓN KRISTINE N. HOPFENSPERGER LEON P. M. LAMERS PETER GELL

Salinization, a widespread threat to the structure and ecological functioning of inland and coastal wetlands, is currently occurring at an unprecedented rate and geographic scale. The causes of salinization are diverse and include alterations to freshwater flows, land-clearance, irrigation, disposal of wastewater effluent, sea level rise, storm surges, and applications of de-icing salts. Climat...

2017
Florian Wittmann Márcia C M Marques Geraldo Damasceno Júnior Jean Carlos Budke Maria T F Piedade Astrid de Oliveira Wittmann Juan Carlos Montero Rafael L de Assis Natália Targhetta Pia Parolin Wolfgang J Junk J Ethan Householder

Wetlands harbor an important compliment of regional plant diversity, but in many regions data on wetland diversity and composition is still lacking, thus hindering our understanding of the processes that control it. While patterns of broad-scale terrestrial diversity and composition typically correlate with contemporary climate it is not clear to what extent patterns in wetlands are complimenta...

Journal: :محیط زیست طبیعی 0
علی لطفی استادیار دانشکدة منابع طبیعی، دانشگاه صنعتی اصفهان سید مهدی حشمت الواعظین استادیار دانشکدة منابع طبیعی، دانشگاه تهران محمدرضا گیلی استادیار دانشکدة منابع طبیعی، دانشگاه ملایر آزاده کاظمی دانشجوی دکتری دانشکده محیط زیست، دانشگاه تهران

external costs of environmental degradation are often ignored in economic analysis of projects. the mail goal of the paper is to economically analyze the current alternatives of meighan wetland utilization including extraction of sodium sulfate, aquaculture of artemia and integrative alternative considering external costs of wetland degradation. in order to detect eventual degradation of wetlan...

2007
Jason K. Keller

F.1.1 Current Wetland Area and Rates of Loss The ability to estimate soil carbon pools and fluxes in North American wetlands is constrained by the national inventories (or lack thereof) for Canada, the United States, and Mexico (Davidson et al., 1999). The National Wetland Inventory (NWI) program of the United States has repeatedly sampled several thousand wetland sites using aerial photographs...

2013
Bradley J. Cosentino Robert L. Schooley

Wetlands provide habitat for a diverse array of aquatic and semiaquatic species, many of which provide direct economic and recreational value (Woodward and Wui 2001). Despite the provided by wetland fauna and flora, ecosystem services historical wetland loss has been dramatic. Wetland loss was >50% in the U.S. and 60-70% in Europe by the 1980s, with most losses resulting from agriculture and ur...

2017
Son V Nghiem Cinzia Zuffada Rashmi Shah Clara Chew Stephen T Lowe Anthony J Mannucci Estel Cardellach G Robert Brakenridge Gary Geller Ake Rosenqvist

Information about wetland dynamics remains a major missing gap in characterizing, understanding, and projecting changes in atmospheric methane and terrestrial water storage. A review of current satellite methods to delineate and monitor wetland change shows some recent advances, but much improved sensing technologies are still needed for wetland mapping, not only to provide more accurate global...

2017
L. Li Y. Q. Zhao

18 This paper presented an integrated conceptual model to describe the substrate 19 clogging in constructed treatment wetland. The model is based on pore space 20 reduction of the wetland substrate during the integrated treatment processes including 21 physical, biological and plant-related processes. A group of laboratory scale 22 constructed wetlands (CWs) was employed to set up the experimen...

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