نتایج جستجو برای: into the wetland

تعداد نتایج: 16121665  

Journal: :محیط شناسی 0
فریدون غضبان دانشیار، گروه مهندسی محیط زیست، دانشکدة محیط زیست دانشگاه تهران مریم زارع خوش اقبال استادیار، رسوب شناسی و سنگ شناسی رسوبی، دانشگاه آزاد آستارا

abstruct anzali wetland in north of guilan provience is an international important wetland that is recorded in ramsar convension. pollution is one of the major problems facing this wetland. in order to investigate the pollution situation, sediment core samples were taken in 7 stations in 4 districts within the wetland, namely abkenar, siakishom, hendekhale and shijan). elements were determined ...

Journal: :environmental resources research 0
s sefidian gorgan university of agricultural sciences and natural resources (guasnr), gorgan, iran a salmanmahiny gorgan university of agricultural sciences and natural resources (guasnr), gorgan, iran h. mirkarimi gorgan university of agricultural sciences and natural resources (guasnr), gorgan, iran n.a. hasan abassi gorgan university of agricultural sciences and natural resources (guasnr), gorgan, iran

wetlands as water resources have a special place in the semi-arid plateau of iran and boundary determination is necessary for their effective conservation and conflict resolution among stakeholders that are dependent on these resources. determination of the wetland boundaries should be commensurate with environmental features affecting on it which normally extend beyond water extent. ecological...

Journal: :Journal of environmental quality 2004
J M Novak K C Stone A A Szogi D W Watts M H Johnson

Dissolved phosphorus (DP) can be released from wetlands as a result of flooding or shifts in water column concentrations. Our objectives were to determine the long-term (1460 d) DP retention and release characteristics of an in-stream wetland, and to evaluate how these characteristics respond to flooding, draining, and changes in DP concentrations. The studied in-stream wetland drains an agricu...

Journal: :Remote Sensing 2015
Laura L. Bourgeau-Chavez Sarah L. Endres Michael Battaglia Mary Ellen Miller Elizabeth Banda Zachary M. Laubach Phyllis Higman Pat Chow-Fraser James Marcaccio

Methods using extensive field data and three-season Landsat TM and PALSAR imagery were developed to map wetland type and identify potential wetland stressors (i.e., adjacent land use) for the United States and Canadian Laurentian coastal Great Lakes. The mapped area included the coastline to 10 km inland to capture the region hydrologically connected to the Great Lakes. Maps were developed in c...

2014
Samson Okongo Mabwoga Ashwani Kumar Thukral

The increasing population in the developing countries has rendered wetlands vulnerable to land use changes. Remote sensing offers a rapid and efficient means of data acquisition of ecosystems in time and space. The present study was undertaken to identify changes in the Harike wetland, a Ramsar site in the state of Punjab, India; and identify causal factors, as well as vulnerable areas threaten...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1392

like any other learning activity, translation is a problem solving activity which involves executing parallel cognitive processes. the ability to think about these higher processes, plan, organize, monitor and evaluate the most influential executive cognitive processes is what flavell (1975) called “metacognition” which encompasses raising awareness of mental processes as well as using effectiv...

This study aims to enlist Rotatoria in the Anzali wetland (southwest Caspian Sea), a wetland which is listed as an international wetland in Ramsar convention (1975) and is an important ecosystem for spawning and early rearing of larvae of anadromous fishes. Samples of rotifers were collected in three regions of the Anzali wetland between  June 2015 and May 2016. A total of 29 genera of rotifers...

Journal: :پژوهش و برنامه ریزی روستایی 0
منصور غنیان آزاده بخشی رقیه یوسفی حاجیوند آذز هاشمی نژاد

1. introduction wetlands are unique ecosystems that often appear on the sidelines of aquatic or terrestrial systems. they are among the most productive ecosystems on earth, the loss of which can lead to disastrous effects on the wild life and biodiversity. scientists believe that the destruction of wetlands results in the extinction of native species and their specific habitat. as the livelihoo...

ژورنال: کواترنری ایران 2018
azizi, ghasem, Maghsoudi, Mehran , Safaie-Rad, reza,

  1-Introduction   The Zagros Mountains range with a northwest-southeast direction covers a large part of western Iran. This range acts as a barrier against mid-latitude westerly airflows and thereby generates significant orographic rainfalls, resulting in a hospitable environment which has been home to ancient civilizations. Major variations in the westerlies can lead to significant environ...

Journal: :Remote Sensing 2017
Jennifer N. Hird Evan R. DeLancey Gregory J. McDermid Jahan Kariyeva

Modern advances in cloud computing and machine-leaning algorithms are shifting the manner in which Earth-observation (EO) data are used for environmental monitoring, particularly as we settle into the era of free, open-access satellite data streams. Wetland delineation represents a particularly worthy application of this emerging research trend, since wetlands are an ecologically important yet ...

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