Pedološka i proizvodna istraživanja staništa topola u poloju reke Save na području ravnog Srema

Abstract

Izmena hidrološkog režima u poloju reke Save na području Srema, kao posledica pada nivoa podzemnih voda, dovela je do sukcesije brojnih higrofilnih tipova šuma ka suvljim varijantama. Ovaj proces naročito je karakterističan za staništa topola na kojima je, na osnovu ranijih tipoloških istraživanja, definisano 13 ekoloških jedinica. Zbog pomenutih izmena u režimu njihovog vlaženja pristupilo se dodatnim pedološkim i proizvodnim proučavanjima sa ciljem ponovnog preispitivanja njihovih karakteristika, sličnosti i razlika, a u vezi sa tim i opravdanosti postojanja u pomenutom broju. Sublimirani rezultati ovih proučavanja pokazali su da se ekološke jedinice na staništima topola u poloju reke Save diferenciraju u 2 signifikantno različite grupe. Prva grupa nalazi se u klasi nerazvijenih hidromorfnih zemljišta i obuhvata samo jednu ekološku jedinicu (T-84), dok se druga prostire u klasama semiglejnih i glejnih zemljišta i obuhvata ostale ekološke jedinice (T-77, T-78,T-79 T-80, T-81, T-83, T-85, T-87, T-88 i T-89).

The changed hydrological regime of the river Sava valley in the region of Srem, as the consequence of the lower underground water level, resulted in the succession of numerous hygrophilic forest types to more arid varieties. This process is especially characteristic of poplar sites where 13 ecological units were defined based on previous typological studies. Because of the changes in the moisture regime, additional soil and productivity studies were undertaken aiming at the new analysis of characteristics, similarities and differences, and consequently to judge if the above number of ecological units is justified. The results of these studies show that ecological units of poplar sites in the river Sava bottom land arc differentiated into two significantly different groups. One group is in the class of undeveloped hydro-morphic soils and includes only one ecological unit (T-84). The other group is in the classes of semigley and gley soils and it includes all the other previously defined ecological units (T-77, T-78, T-79, T-80, T-81, T-83, T-85, T-87, T-88 and T-89).