نتایج جستجو برای: anthropogenic activities

تعداد نتایج: 397759  

2017
Alfred Awotwi Geophrey Kwame Anornu Jonathan Quaye-Ballard Thompson Annor Eric Kwabena Forkuo

The Lower Pra River Basin (LPRB), located in the forest zone of southern Ghana has experienced changes due to variability in precipitation and diverse anthropogenic activities. Therefore, to maintain the functions of the ecosystem for water resources management, planning and sustainable development, it is important to differentiate the impacts of precipitation variability and anthropogenic acti...

Journal: :Remote Sensing 2017
Matteo Albano Marco Polcari Christian Bignami Marco Moro Michele Saroli Salvatore Stramondo

On 3 April 2017, a Mw 6.5 earthquake occurred in Botswana, representing the secondstrongest earthquake registered since 1949. Such an intraplate event occurred in a low seismic hazard area and was suspected to be an artificial earthquake induced by nearby anthropogenic activities (gas extraction). The possible relation between anthropogenic activities and the earthquake occurrence has been qual...

2017
Xiaoyang Song Yaohuan Huang Jingying Fu Dong Jiang Guangjin Tian

Nature reserves play an essential role in protecting natural resources and maintaining an ecological balance. However, certain nature reserves are increasingly disturbed by human activities in the form of settlements, roads, farmland, etc. How to monitor the status of nature reserves by using remote sensing methods has been a focus of scholars for a long time. In this study, remote sensing sate...

2013
He Chen Lekuan Ma Wei Guo Ying Yang Tong Guo Cheng Feng

Most rivers worldwide are highly regulated by anthropogenic activities through flow regulation and water pollution. Environmental flow regulation is used to reduce the effects of anthropogenic activities on aquatic ecosystems. Formulating flow alteration-ecological response relationships is a key factor in environmental flow assessment. Traditional environmental flow models are characterized by...

2008
S. Terzić N. Mikac V. Roje

The Plitvice Lakes National Park is situated in a pristine and sparsely populated area of the northwestern Dinarides, central Croatia. The basic geomorphological phenomenon of the Park consists of 16 karst lakes interconnected by numerous cascades and waterfalls, formed by travertine barriers. During the last century the area experienced significant changes regarding the prevailing anthropogeni...

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...

2014
Jinliang Huang Yaling Huang Zhenyu Zhang

Surface water samples of baseflow were collected from 20 headwater sub-watersheds which were classified into three types of watersheds (natural, urban and agricultural) in the flood, dry and transition seasons during three consecutive years (2010-2012) within a coastal watershed of Southeast China. Integrating spatial statistics with multivariate statistical techniques, river water quality vari...

2009
Yonghong Hao Yajie Wang Yuen Zhu Yi Lin Jet-Chau Wen Tian-Chyi J. Yeh

Discharge from the largest karst spring in north China, the Niangziguan Springs, has been declining since the 1950s. This paper examines the response of these springs to climatic change and anthropogenic infl uence by attempting a model-based discrimination between phases in the stream discharge record. In Niangziguan Springs Basin, the exploitation of karst groundwater began in 1979. According...

2016
Rui Xiao Diwei Jiang George Christakos Xufeng Fei Jiaping Wu

Soil sealing (loss of soil resources due to extensive land covering for the purpose of house building, road construction etc.) and subsequent soil landscape pattern changes constitute typical environmental problems in many places worldwide. Previous studies concentrated on soil sealing in urbanized regions, whereas rural areas have not been given sufficient attention. Accordingly, this paper st...

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