搜索结果: 1-15 共查到“知识库 理学 karst”相关记录22条 . 查询时间(0.055 秒)
STUDY ON KARST INFORMATION IDENTIFICATION OF QIANDONGNAN PREFECTURE BASED ON RS AND GIS TECHNOLOGY
Karst Landsat-5 TM Image RS+DEM Slope Karst Rocky Desertification
2018/5/16
Karst area is a pure natural resource base, at the same time, due to the special geological environment; there are droughts and floods alternating with frequent karst collapse, rocky desertification a...
The features of soil erosion and soil leakage in karst peak-cluster areas of Southwest China
Soil erosion Soil leakage Karst peak-cluster depression Land use 137Cs tracing Longhe karst ecological experimental site
2018/3/23
Through utilizing water flow monitoring, rock scratching, soil wood piles and radionuclide 137Cs tracing in the Longhe karst ecological experimental site (hereinafter referred to“Longhe site”), Pinggu...
Characterization and interaction of driving factors in karst rocky desertification: a case study from Changshun, China
In the southwest ecological problems karst rocky desertification the regional sustainable development the karst environment
2015/1/6
As the most severe ecological issue in southwest China, karst rocky desertification (KRD) has both threatened and constrained regional sustainable development. Comprehensively understanding the relati...
The role of karst in engineering and environmental geosciences
karst in engineering environmental geosciences
2014/12/31
Karst is a unique landform developed by soluble rock. It usually relates to the groundwater drainage system, and provides important water resources. Current researches indicate that karst is closely r...
Dissolved organic carbon and its carbon isotope compositions in hill slope soils of the karst area of southwest China: Implications for carbon dynamics in limestone soil
karst slope land soil organic carbon dissolved organic carbon δ13C
2017/4/11
Dissolved organic carbon (DOC) can be considered fine indicators of soil quality that influence soil function in specific
ways and are very sensitive to changes in soil management practices. In this ...
Chemical characteristics and δ34S–SO4 2– of acid rain: Anthropogenic sulfate deposition and its impacts on CO2 consumption in the rural karst area of southwest China
karst rainwater chemical composition carbonate weathering southwest China
2017/4/11
We analyzed rainwater collected from Huanjiang, China, between June, 2007 and May, 2008, with the aim of understanding
the origin of the acid rain and its potential impacts on CO2 uptake by carbonate...
Hazards caused by natural and anthropogenic changes of catchment area in karst
natural and anthropogenic changes catchment area karst hazards
2009/12/14
Determination of the catchment area is the starting point in most hydrological analyses. It serves as a basis for many hydrological and water resources management calculations. The catchment boundarie...
Flood history in the karst environment of Castellana-Grotte (Apulia, southern Italy)
Flood history the karst environment of Castellana-Grotte
2009/12/10
Karst environments are characterized by peculiar hydrologic features, and in particular by a very limited, if not absent, surface hydrography. Water tends to infiltrate rapidly underground through the...
On some Salpingoporella species from the Lower Cretaceous of Dinaric karst
Dasycladales Salpingoporella taxonomy biogeography Lower Cretaceous Dinarides Croatia
2009/12/7
In this paper a new species Salpingoporella tari n.sp. is established, found in a sample of Barremian intraclastic grainstone. It is similar to S. annulata (LORENZ) and S. grudii (RADOI?I?), but visib...
An estimation of groundwater type and origin of the complex karst catchment using hydrological and hydrogeochemical parameters:A case study of the Gacka river springs
hydrogeology karst hydrogeochemistry isotopic research river Gacka Croatia
2009/12/7
Karst aquifers are heterogeneous terrains, where it is hard to assess any hydraulic parameter. Therefore, a multidisciplinary approach is necessary for research on karst aquifers. Catchment area of th...
Subsidence hazards connected to quarrying activities in a karst area:the case of the Moncalvo sinkhole event (Piedmont,NW Italy)
gypsum quarries karst inrush sinkhole NW Italy
2009/10/21
Gypsum is an important raw material for constructions and other industrial sectors. In Piedmont (NW Italy), main gypsum bodies are located in the Monferrato area, where large open pits and underground...
EVALUATION OF AQUIFER TRASMISSIVITY IN KARST USING GEOPHYSICAL WELL LOGS
AQUIFER TRASMISSIVITY GEOPHYSICAL KARST
2009/10/19
A hydrogeophysical model is presented for the South Havana Basin, Cuba, based on the processing of geophysical well logs, together with transmissivity data obtained from aquifer tests. The model provi...
RESOLUTION POWER OF WELL LOG GEOPHYSICS IN KARST AQUIFERS
geophysical log parameters South Havana Basin parameters
2009/10/12
Empirical relationships are presented between geophysical log parameters and hydraulic parameters in the South Havana Basin karst aquifer. These relationships have not been reported in previous invest...
Integrating field and numerical modeling methods for applied urban karst hydrogeology
geologic formations Electrical Resistivity Tomography urban karst hydrogeology
2009/7/22
Infrastructures constructed on unstable geologic formations are prone to subsidence. Data have been collected in the context of an upgrading project for a highway located beside a river dam constructe...
Karst in Turkish Thrace: Compatibility between Geological History and Karst Type
cave karst morphology neotectonic palaeogeography Thrace Turkey
2009/7/7
Geographically, Thrace is a region located in southeastern Europe within the territories of Greece, Bulgaria and Turkey. In Turkish Thrace, karst occurs extensively in Eocene limestones, although som...