نتایج جستجو برای: karst region

تعداد نتایج: 542144  

Journal: :SCIENTIA SINICA Physica, Mechanica & Astronomica 2020

2013
Fuyuan Liang Yunyan Du

Mapping specific landform entities in the past is mainly achieved by manually examining contour lines on topographic maps. Automated delimitation of specific landform from digital elevation data remains difficult in geomorphologic mapping. This paper presents a method to automatically identify five common surface features of karst landscapes: isolated karst hill or sinkhole, clustered karst hil...

Journal: :Ground water 2007
Lee J Florea H L Vacher

Eogenetic karst lies geographically and temporally close to the depositional environment of limestone in warm marine water at low latitude, in areas marked by midafternoon thunderstorms during a summer rainy season. Spring hydrographs from such an environment in north-central Florida are characterized by smooth, months-long, seasonal maxima. The passage of Hurricanes Frances and Jeanne in Septe...

2015
Junjie Tao Qingwen Qi Ming Kang Hongwen Huang Maria Anisimova

Limestone Karst areas possess high levels of biodiversity and endemism. Primulina is a typical component of Karst endemic floras. The high species richness and wide distribution in various Karst microenvironments make the genus an idea model for studying speciation and local adaptation. In this study, we obtained 10 full-length sequences of the phytochrome PHYE from available transcriptome reso...

2018
Nalaka Geekiyanage Uromi Manage Goodale Kunfang Cao Kaoru Kitajima

Karst hills, that is, jagged topography created by dissolution of limestone and other soluble rocks, are distributed extensively in tropical forest regions, including southern parts of China. They are characterized by a sharp mosaic of water and nutrient availability, from exposed hilltops with poor soil development to valleys with occasional flooding, to which trees show species-specific distr...

Journal: :Eng 2023

In this study, the karst systems (karst types) of Bakony Region are classified and described. The features groundwater (karstwater) flow, their horst (block) types hydrological cycle were taken into consideration. mountains, regional flow with a hypogene branch (hypogene system) epigene karsts local distinguished. Among systems, system, mixed complex incomplete system semi-closed Local only tem...

Journal: :Environmental science & technology 2014
Helen P Jarvie Andrew N Sharpley Van Brahana Tarra Simmons April Price Colin Neal Alan J Lawlor Darren Sleep Sarah Thacker Brian E Haggard

Karst landscapes are often perceived as highly vulnerable to agricultural phosphorus (P) loss, via solution-enlarged conduits that bypass P retention processes. Although attenuation of P concentrations has been widely reported within karst drainage, the extent to which this results from hydrological dilution, rather than P retention, is poorly understood. This is of strategic importance for und...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1387

چکیده ندارد.

2004
W. Zhu R. Nan Q. Wang L. Zhu B. Peng H. Zhang Y. Qiu

In 1993, a large radio telescope (LT, now referred as the SKA) was proposed by astronomers from 10 countries at the 24 General Assembly of URSI. The SKA would be a telescope array with a total effective collecting area of about one square kilometer. There are various concepts, worldwide, for realizing the SKA project. Extensive efforts have been made, e.g, by project teams in The Netherlands, A...

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