نتایج جستجو برای: river basin

تعداد نتایج: 123719  

2015
Xin Jin Venkataramana Sridhar

In the Pacific Northwest, warming climate has resulted in a lengthened growing season, declining snowpack, and earlier timing of spring runoff. This study characterizes the impact of climate change in two basins in Idaho, the Spokane River and the Boise River Basins. We simulated the basin scale hydrology by coupling the downscaled precipitation and temperature outputs from a suite of global cl...

Journal: :Genetics and molecular research : GMR 2015
R S Panarari-Antunes A J Prioli S M A P Prioli H F Júlio A V Oliveira C S Agostinho J P Silva Filho L M Prioli

The genetic diversity of invasive and native populations of Plagioscion squamosissimus (Heckel, 1840) from the Paraná, Parnaiba and Araguaia-Tocantins river basins was assessed by using Random Amplified Polymorphic DNA (RAPD) markers. Genetic data confirmed the hypothesis of low genetic variability within and among P. squamosissimus populations introduced in the upper Paraná River basin, and in...

2004
S. Y. Phoon A. Y. Shamseldin

Introduction The Nile River the longest river in the world has been serving as a source of life to the people living in its basin for centuries. Throughout the course of history, the Nile has supported livelihoods and played a considerable role in enriching diverse cultures within its basin. Hence, the Nile has been the centre of attention of explorers, tourists, researchers and historians for ...

2013
Klemen Prah Andrej Lisec Anka Lisec

Many real-world spatially related problems, including river-basin planning and management, give rise to geographical information system based decision making, since the performance of spatial policy alternatives were traditionally and are still often represented by thematic maps. Advanced technologies and approaches, such as geographical information systems (GIS), offer a unique opportunity to ...

Journal: :Nutricion hospitalaria 2017
Xiaodong Zhan Chaopin Li Hua Wu

OBJECTIVE To investigate the prevalence of trematode Aspidogastrea in the freshwater mussels in the Yangtze River basin within Anhui province, China. METHODS We initially harvested the freshwater mussels living in the Yangtze River running through Anhui area, and labeled them with corresponding number. Then the samples were dissected for isolating the flukes, which were identified by conventi...

Journal: :Remote Sensing 2016
Christian Wohlfart Gaohuan Liu Chong Huang Claudia Kuenzer

The Yellow River Basin is one of China’s most densely-populated, fastest growing and most dynamic regions, with abundant natural resources and intense agricultural production. Major land policies have recently resulted in remarkable landscape modifications throughout the basin. The availability of precise regional land cover change information is crucial to better understand the prevailing dyna...

2011
Juliane B Brown Lori A Sprague Jean A Dupree

SPAtially Referenced Regressions On Watershed attributes (SPARROW) models were used to relate instream nutrient loads to sources and factors influencing the transport of nutrients in the Missouri River Basin. Agricultural inputs from fertilizer and manure were the largest nutrient sources throughout a large part of the basin, although atmospheric and urban inputs were important sources in some ...

Journal: :Remote Sensing 2017
Jia Zhu Zhihong Huang Hua Sun Guangxing Wang

The distribution of forest biomass in a river basin usually has obvious spatial heterogeneity in relation to the locations of the upper and lower reaches of the basin. In the subtropical region of China, a large amount of forest biomass, comprising diverse forest types, plays an important role in maintaining the balance of the regional carbon cycle. However, accurately estimating forest ecosyst...

2016
David G. Tarboton David G Tarboton

This paper considers the risk of drought and develops drought scenarios for use in the study of severe sustained drought in the Southwestern United States. The focus is on the Colorado River basin and regions to which Colorado River water is exponed, especially southern California, which depends on water from the Colorado River as well as the four major rivers in northern California. Drought sc...

Floods are one of the most abundant and destructive natural disasters that every year are caused heavy losses of life and property. Due to human activity in river systems and construction in rivers, flood damage has an upward trend. One of the most important actions to reduce flood damage is the provision of flood hazard zoning maps and their use in spatial planning. In this study, the risk of ...

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