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  • Influence of Hydrological Parameters on the Biodiversity of the BerettyóRiver I.
    215-229
    Views:
    96

    The DIRECTIVE 2000/60/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL orders the measurement of the state of natural and artifical waters. We therefore applied environmental qualification methods, which allow inductions of the searched area in environmental management, conservation and water quality protection points of view. These methods are accepted in interdisciplinary sciences, and are in use in Hungarian and international practice. We applied the range data measured along the Berettyó River, and ratified by the remote sensing, to count hydrological-hydraulical attributes of the stream, by the framework of the Hec-Ras programme. We processed the physical, chemical and biochemical water qualifications, determined the MMCP-index (the point-system of the Hungarian macrozoobenthos taxons), and estimated the Spencer index-numbers, which were based on complex environmental qualification and bioindication. Appointed, that the different results of researches are not inconsistent. This results together the spatial analysis reveal the natural and anthroponetic specialities of the river and the landscape, which determine the environmental flavours and biodiversity. The bioindicators represent better environmental status, than the physical, chemical and biochemical parameters. The natural conservationist importance of drainage canal network of Bihari-Plain is appreciated by these facts.

  • Examination of the effects of the cropyear and the nutrient supply on the quality of winter wheat with the help of Győri’s Z-index
    121-125
    Views:
    59

    In the case of winter wheat,the knowledge of several quality features is needed to be able to determine precisely the real quality of the given
    wheat. Several systems have been worked out on the qualification of the winter wheat in Hungary and other countries as well. Evaluating the
    quality is being made more difficult because the different quality features take part in the development of the quality in different degrees and
    the values of the several quality features are in different intervals and these data are different dimension values. On the evidence of the
    results, in the case of considering several features,it can be difficult to rank into one concrete quality cathegory. Researchers are trying to
    develop complex quality index numbers in order to be able to define the quality more precisely. One of these complex quality index numbers
    is Gyıri’s, so called, Z-index.
    In three years from 2006 and 2008, we examined the change of the quality features of nine varieties of winter wheat with the help of the
    Z-index under the influence of the effects of the different cropyears and the fertilizer treatment. The results show that the Z-index of the
    examined varieties of winter wheat were influenced by several factors. Examining the data of the three different breeding years together we
    can observe the corrective effect of the different cropyears on the Z-index, and if we examine the three years separately and together, the
    differences of the quality features of the different varieties differentiate very well, and with the help of the Z-index the comparison of the
    types is easier and perspicuous, and the Z-index represents the different nutrient reactions of the different types as well. On the average of
    the three years, the types gave the best results at N120-150+PK nutrient level. Among the nine varieties the best results were given by Mv Suba,
    GK Békés and Mv Mazurka in the case of both low and higher nutrient levels.