By Jiří V Černý; Bedr̆ich Moldan

Unique multinational participants current examine of small catchments to ascertain quite a few environmental difficulties, specially these of acidification, wooded area administration and land-use adjustments. Divided into elements, it introduces theoretical techniques by way of a overview of atmospheric deposition and assessment of weathering and erosion procedures. the second one part bargains with the method of the given self-discipline, stressing novel methods and discussing difficulties

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Extra resources for Biogeochemistry of small catchments : a tool for environmental research ; [summary of meeting held in Most, Czechoslovakia Nov. 1990]

Sample text

See Chapters 16 and 17, this volume). 4 MEASUREMENTS IN SMALL CATCHMENTS Relatively inexpensive instrumentation can transform a unit of landscape, a selected small catchment, into a true natural laboratory enabling quantitative study. A group of three to five researchers with access to a chemical laboratory and datahandling facility can easily conduct the basic measurements and data evaluation. However, one has to bear in mind that the amount of expended funds relates closely to the intensity of the study and the scope of its objectives.

Today a wide selection of reliable instruments exists for deployment in remote places. Some automatic recording devices, such as precipitation gauges, are capable of proper functioning without human intervention for several months. The roofed catchment Gl in Lake Giirdsjon area (SW Sweden) may serve as an example of a well-equipped site. g. microcomputer-controlled watering of the catchment and an extensive set of meteorological and other data collection devices. 2). 2 Parameters measured continuously in catchment G I of Lake Gardsjon, Sweden, available on-line by means of data loggers, modem and telephone line (F.

1988). 5 ENVIRONMENTAL CATCHMENTS PROBLEMS STUDIED IN SMALL Many environmental questions and problems of husbandry of natural resources were studied in small catchments. e. in Chapters 9-17. The results contributed considerably to better management and small catchment research often elucidated causal relationships. Very detailed studies of atmospheric deposition of acidic or acidifying substances were performed in small catchments. These contributed substantially to present knowledge of this process.

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