KLÍMA-21 Füzetek 61. szám - VAHAVA Hálózat

„KLÍMA-21” FÜZETEK: KLÍMAVÁLTOZÁS – HATÁSOK – VÁLASZOK 187
The need to act to prevent increasing losses caused by the extremes, as well as the uncertainties
together determine the tasks for water management, in line with the National Climate
Change Strategy as well as the directives and recommendations of the Community (Water
Framework Directive, Flood Directive, Statement on Drought):
– Short-term measures which can be implemented despite the uncertainties are especially
important, as they are effective in reducing losses, entail acceptable costs, and are not called
for solely due to the current and expected effects of climate change. The sustainable solution
lies in the coordinated handling of flooding, high water table and drought (using various water
retention methodologies), as well as in supporting the adaptation of land use to the water
management considerations.
– Climate impact studies should be integrated into the water management planning processes
(including the preliminary planning of measures to be implemented on a longer term).
The most important tasks include reduction of the significant lack of information on the effects
of climate change on water management; identification and monitoring of the climate
change sensitive indicators; supporting the relevant R+D activities; and strengthening international
cooperation.
– Finally, preparation for the longer-term consequences of aridification for water management
– i.e. an appreciable reduction of water reserves and increasingly severe droughts – is
another priority task. It is desirable to draw up plans adapted to the (uncertainly) forecast
extent of climate change, to be implemented if the indicators identified reach the limit values
indicating the need for intervention.
SOME AGROCLIMATIC ASPECTS OF RAINWATER,
WATER RESOURCES AND WATER USE
By
TŐKEI, LÁSZLÓ – JUHOS, KATALIN
Keywords: water resources, water balance, rainwater, water usage, irrigation.
The often extreme distribution of rainfall can cause unfavourable water balance situations.
We are not only sufferers of the impacts of hydrological changes, but also affect such
changes through land use. The definition of the lack or abundance of water is relative and
depends very much on the amount of water needed, including water required for agricultural
production. We should give adequate answers – dynamic in time and space – using special
mathematical as well as practical approaches. The answers must include the rational use of
available moisture and its preservation in the soil, not only in cultivated areas but in the entire
ecological system.