نتایج جستجو برای: karst water

تعداد نتایج: 554389  

2012
Khaled A. Rashed

Karst aquifers are often classified as highly heterogeneous systems. Such systems are very complex to assess and model due to the presence of discontinuous porosity, large spatial variability of hydraulic parameters and the difficulties encountered in establishing the fundamental spatial properties of the system. In fact, karst aquifers have been studied and classified into groups based on seve...

Journal: :جغرافیا و توسعه ناحیه ای 0

extended abstract 1. introduction karst classification is carried out in order to better investigate karsts. it plays a fundamental role in distinguishing and recognizing them. today, the implementation of development projects without the appreciation of karst classification and recognition seems a difficult task. field studies, topographic maps, satellite images, aerial photographs and geologi...

2010
Frank Winde

Largely dependent on gold mines for their economic survival, many mining towns in the Far West Rand fear the effects of the inevitable impact of mine closure, not only on the economy but also on social stability. Large-scale environmental degradation in the form of sinkholes and widespread radioactive pollution exacerbate such fears. Based on an analysis of mining impacts and potential threats ...

2017
Mateja Lumpert Samo Kreft

BACKGROUND Information on the use of medicinal plants in Karst and Gorjanci is not available in the literature, but collection of plants is still an important and widespread practice in these regions. Karst and Gorjanci are two remote regions in Slovenia that are only 120 km apart but have different climates; one region is close to the Italian border, and the other is near the Croatian border. ...

2005
Rick Olson Caroline Noble

Karst landscape overview THE 52,830 ACRES OF MAMMOTH CAVE NATIONAL PARK are part of the South-Central Kentucky Karst, which is characterized by subterranean drainage to springs on major rivers. From the southeast to the northwest portion of the landscape (Figure 1), there is a gradient of decreasing maturity in karst development, which corresponds to the regional dip of the bedrock. The major c...

Journal: :The Science of the total environment 2015
Andrew C Smith Peter M Wynn Philip A Barker Melanie J Leng

The use of speleothems to reconstruct past climatic and environmental change through chemical proxies is becoming increasingly common. Speleothem chemistry is controlled by hydrological and atmospheric processes which vary over seasonal time scales. However, as many reconstructions using speleothem carbonate are now endeavouring to acquire information about precipitation and temperature dynamic...

Journal: :American Journal of Civil Engineering 2019

Journal: :International Journal of Environmental Science and Technology 2021

Journal: :American journal of primatology 2007
Andrew J Marshall Leonardo A Salas Suzette Stephens Linda Engström Erik Meijaard Scott A Stanley

The Indonesian province of East Kalimantan is home to some of the largest remaining contiguous tracts of lowland Dipterocarp forest on the island of Borneo. Nest surveys recently conducted in these forests indicated the presence of a substantial population of Eastern Bornean orangutans (Pongo pygmaeus morio) in the Berau and East Kutai regencies in the northern half of the province. The Sangkul...

2013
Yuguo Liu Changcheng Liu Shijie Wang Ke Guo Jun Yang Xinshi Zhang Guoqing Li

Karst ecosystems are important landscape types that cover about 12% of the world's land area. The role of karst ecosystems in the global carbon cycle remains unclear, due to the lack of an appropriate method for determining the thickness of the solum, a representative sampling of the soil and data of organic carbon stocks at the ecosystem level. The karst region in southwestern China is the lar...

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