نتایج جستجو برای: land use types

تعداد نتایج: 2205376  

Every year, due to population growth and economy development, land uses and land covers are changing. The various types of land uses have significant roles on components of water balance of a watershed. The simulation modeling has the capability to predict floods, to evaluate land use impacts on floods, and to make decision in watershed management. In this research, the effects of land use chan...

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...

2017
Aiman Soliman Kiumars Soltani Junjun Yin Anand Padmanabhan Shaowen Wang

A number of recent studies showed that digital footprints around built environments, such as geo-located tweets, are promising data sources for characterizing urban land use. However, challenges for achieving this purpose exist due to the volume and unstructured nature of geo-located social media. Previous studies focused on analyzing Twitter data collectively resulting in coarse resolution map...

2016
Zhiwei Wang Shengtian Yang Changsen Zhao Juan Bai Hezhen Lou Ke Chen Linna Wu Guotao Dong Qiuwen Zhou Mustafa M. Aral

The transport characteristics of phosphorus in soil and the assessment of its environmental risk have become hot topics in the environmental and agricultural fields. The Sanjiang Plain is an important grain production base in China, and it is characterised by serious land use change caused by large-scale agricultural exploitation. Agricultural inputs and tillage management have destroyed the so...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم انسانی و پایه 1390

the present study aimed at investigating the relationship between iranian efl teachers’ classroom management orientations and their teaching styles. additionally, the difference between male and female teachers’ teaching styles and classroom management orientations and their relationship with experience and age were explored. three hundred efl teachers filled in attitudes and beliefs on classro...

2016
Weiwei Zhang Nabin K. Malakar Rajan Ghimire Pradeep Wagle

Recently, land use and land cover change have received increased attention, and an approach is required that can assess agricultural land use intensity on a general basis. This study demonstrated the usefulness of a tool for characterizing and assessing agricultural land use intensity in Beijing mountainous region. An emergy analysis and principal component analysis (PCA) were adopted to obtain...

2009
Diane M. Styers Arthur H. Chappelka

Changes in land use disrupt ecosystem patterns and processes and serve as precursors to other biotic and abiotic stressors. Forest ecosystems in the urban core typically differ structurally and functionally from those in rural areas. The overall objective of the study was to determine concentrations of selected air-borne contaminants (N, S, and heavy metals) over space and time and relate these...

2017
Cui Li Bo Xiao Qinghai Wang Ruilun Zheng Juying Wu

To provide more insights into the responses of the soil seed bank and vegetation to human disturbance intensity, we selected four land use types, including: native grassland (no human disturbance), abandoned artificial grassland (light human disturbance), artificial grassland (moderate human disturbance), and farmland (severe human disturbance) in a semi-arid climate of northern China. The spec...

Journal: :Tanzania journal of health research 2014
Proches Hieronimo Didas N Kimaro Nganga I Kihupi Hubert Gulinck Loth S Mulungu Balthazar M Msanya Herwig Leirs Jozef A Deckers

Small mammals are considered to be involved in the transmission cycle of bubonic plague, still occurring in different parts of the world, including the Lushoto District in Tanzania. The objective of this study was to determine the relationship between land use types and practices and small mammal abundance and distribution. A field survey was used to collect data in three landscapes differing i...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید