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Nicole Scheifhacken Ulrike Haase Lesya Gram-Radu Roman Kozovyi Thomas U. Berendonk 《Environmental Earth Sciences》2012,65(5):1483-1499
Recently, the Ukrainian Western Bug water authorities developed a national field survey to assess the quality of river habitats.
The Ukrainian government already cooperates with EU member states along transboundary rivers and also orientates itself towards
the European Water Framework Directive (WFD). As a future application for EU membership is feasible, the water authorities
started to implement WFD criteria into their national survey schemes including the assessment of rivers’ hydromorphology.
This article compares two different hydromorphological survey methods to identify similarities and differences of the classification
approaches with regard to the conformity of obtained outputs with the WFD demands. The field surveys, the Ukrainian (UA-FS)
and the German (LAWA-FS), were applied in parallel on 14 river sections along the Western Bug River and parts of its tributaries.
Results show a wide range of conformity, but also several differences between and gaps within all methods. The UA-FS generally
lacks the idea of reference condition in rivers’ hydromorphology and the definition of different stream types or near-natural
land uses. The UA-FS and the LAWA-FS approaches are similar with respect to their incorporated compartments and most main
parameters, but differ in definition and interpretation of specific functional units and single parameters. Greatest similarities
down to single parameters exist in aspects of land use, bank vegetation, currents diversity, and within-stream variation of
water depths. Differences include the assessment and interpretation of lateral erosion, sinuosity, type and depth of profile,
substrate diversity, as well as special structures of bank and riverbed. Overall, the LAWA-FS is more conservative in its
rating than the UA-FS. Still, UA-FS can be regarded as an important improvement for a systematic and reliable monitoring of
river hydromorphology in the Ukraine that will help to successfully engage with both the integrated water resources management
and the WFD harmonisation process in the future. 相似文献
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Svetlana Kováčiková Igor Logvinov Andriy Nazarevych Lesya Nazarevych Josef Pek Victor Tarasov Pavel Kalenda 《Studia Geophysica et Geodaetica》2016,60(2):280-296
We present results of a study of the seismicity and the geoelectric structure of the Eastern Carpathians. After the evaluation of the seismicity, new methods of processing and analyzing seismic data are developed, which allow constructing an averaged horizontal-layered velocity model of the crust in the Carpathian region of Ukraine, tracing the seismic active faults and localizing the seismic events both in horizontal and in vertical direction with a better precision. For the study of the conductivity structure beneath the Eastern Carpathians, the collected magnetovariation and magnetotelluric data are used. The depth of electrical conductivity anomalies are estimated and the resulting quasi-3D model of the conductivity structure beneath the Carpathians is compared with the seismicity in the depth range of 10 ± 2.5 km. The comparison suggests possible geological mechanisms: the seismic events occur mainly in resistive solid rock domains which surround aseismic high-conductivity zones, consisting of at least partially melted material. Aqueous fluids, or a joint effect of several mechanisms, may also play an active role in this distribution. 相似文献
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