نتایج جستجو برای: urban wetland

تعداد نتایج: 180821  

Journal: :Environmental management 2002
Stacy A C Nelson Patricia A Soranno Jiaguo Qi

The Barataria Basin, Louisiana, USA, is an extensive wetland and coastal estuary system of great economic and intrinsic value. Although high rates of wetland loss along the coastal margin of the Barataria Basin have been well documented, little information exists on whether freshwater wetlands in the upper basin have changed. Our objectives were to quantify land-cover change in the upper basin ...

Kiana Jamshidi , Soheil Sobhanardakani,

Background: Sediments are inseparable fractions of wetland ecosystems that work as a his-torical archive in the process of recording heavy metal aggregation changes. This study was carried out for assessing Co, Ni, and Zn in sediment samples of Mighan Wetland using geo-accumulation index in 2013. Methods:The sediment samples were taken from 11 stations. The samples were subjected to bulk dige...

Amin Ghasemi, Saeed Ganjali,

Background: The most important factors and problems threatening the Anzali Wetland are the contaminant load and sediments entering the wetland, as well as lack of an integrated management plan for this wetland. The main objectives of the current research were to explore whether there are significant differences in concentrations of Zn, Cd, and Pb in surface sediments among different sites (base...

2017
Jiajie Cao Junjun Yu Yuan Tian Cai Zhao Hao Wang

As a fundamental part of greenspace, urban water landscape contributes greatly to the ecological system and at the same time supplies a leisure area for residents. The paper did an analysis on the number of aquatic plant communities, the form of water spaces, and water quality condition by investigating 135 quadrats (90 at amphibious boundary and the land, 45 in the water) in 45 transects of 15...

پایان نامه :دانشگاه بین المللی امام خمینی (ره) - قزوین - دانشکده مهندسی معماری و شهرسازی 1388

nowadays,tourism industry considered as one of the main sources of income of a country.unfortunately and despite of owning plenty of cultural historical and natural attractions, iran has not reached to a proper position in this field. besides, the historical cities of a country are considered as the income resource and national wealth of it. qazvin with a rich cultural precedent, have suitable ...

Journal: :محیط زیست طبیعی 0
اعظم حیدری پژوهشگر مهمان، مرکز پژوهش های اکولوژی، انیسیتوی حفاظت طبیعت و مدیریت منابع آب، دانشگاه کیل، آلمان نیکولا فوهر استاد هیدرولوژی و مدیریت منابع آب، مرکز پژوهش های اکولوژی، انیسیتوی حفاظت طبیعت و مدیریت منابع آب، دانشگاه کیل، آلمان ناکانه کانه یوکی استاد مدیریت و دینامیک محیط زیست دانشکده علوم بیوسفر دانشگاه هیروشیما، ژاپن

impacts of land use types on wetland functions were investigated in three surface water wetlands, located in west japan. nitrogen concentration was monthly sampled and measured in input, output and inside of the wetlands. findings of the present study revealed that function of the wetlands and its capabilities for reduction or remove of the nutrients from surface water are varied by change in t...

Journal: :Remote Sensing 2014
Jeffrey W. Cable John M. Kovacs Jiali Shang Xianfeng Jiao

For successful applications of microwave remote sensing endeavors it is essential to understand how surface targets respond to changing synthetic aperture radar (SAR) parameters. The purpose of the study is to examine how two particular parameters, acquisition time and incidence angle, influences the response from various land use/land cover types (forests, urban infrastructure, surface water a...

2013
Teck-Yee Ling Kasing Apun

Partially treated black water from septic tanks and grey water from households in Kuching City were polluting the Sarawak River. A pilot scale ecological sanitation was implemented where blackwater was held in septic tanks and greywater was channeled to a grease trap, biofilters and a constructed wetland before discharge. The objectives of this study were to evaluate the efficiency of the biofi...

Journal: :Natural Resources Conservation and Research 2018

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