regenerarea $i refacerea arboretelor de stejar cu ... - Editura Silvica
regenerarea $i refacerea arboretelor de stejar cu ... - Editura Silvica
regenerarea $i refacerea arboretelor de stejar cu ... - Editura Silvica
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ln grafi<strong>cu</strong>l urmd,tor-, cd, clasere <strong>de</strong> vrrstr, bd,trine srnt<br />
<strong>de</strong><br />
murt<br />
suprafata<br />
<strong>de</strong>ficitare<br />
normalf, pe<br />
fa!6<br />
care ac"st"a an ti ireuuii uilo<br />
arboretele<br />
o""p", io timp<br />
tinere<br />
ce<br />
apai <strong>cu</strong> suprafa{e ex<strong>cu</strong>aentar"-ttig. "rir.<br />
_<br />
Re gim ul adoptar.<br />
-pe ntru q'uercio"* t-rll"i. - riii[iTt"t<br />
eod.rului.<br />
aeaun& re gimul<br />
<strong>cu</strong> excentiile_ prev5zute d.o instructriu"il* ac am*o*ja"o<br />
me,nte, in vigoarel'Arr.oretele-i,;"*;;"<br />
actual-<br />
ain rnsiari-u-i,il'<br />
putin<br />
dovedit<br />
longevive qi,<br />
mai<br />
<strong>de</strong>ci. mai efpuse uscdrilor <strong>de</strong>clt cele din sd,mintd,.<br />
.\<br />
3<br />
SE=<br />
F<br />
N<br />
N<br />
fn ve<strong>de</strong>rea asigurdiii re-<br />
generd,rii suprafelelor bintuits<br />
se impune exclu<strong>de</strong>rea <strong>cu</strong> d.et{.vtrqire<br />
a pd,gunatului, ingrdd.irea<br />
porliunilor in <strong>cu</strong>rs <strong>de</strong><br />
regenerare acolo un<strong>de</strong> este<br />
R<br />
*I II q)<br />
SN ,l<br />
€N<br />
"F mai mare pericolul <strong>de</strong> invazie<br />
a ldtelor gi red.ucerea cir<strong>cu</strong>-<br />
N*<br />
laliei la strictul necesar.<br />
Aceste md,suri vor contribui<br />
d 6i la ameliorarea cond.i,tiilor<br />
<strong>de</strong> sol.<br />
Metoda <strong>de</strong> amenaja,re are<br />
labazd, tot clasele <strong>de</strong> virstf,<br />
<strong>de</strong>oarcce aceastil metod{, permite<br />
urmf,,rirea modului <strong>cu</strong>m<br />
evolueazd, structura fond.ului<br />
productiv atunei clnd aceastb<br />
Fig. 54. Situatia claselor <strong>de</strong> virstil in ptrdurile structuri, este<br />
<strong>de</strong> steiar din prn.<br />
modifieattr, <strong>de</strong><br />
fenomenul d.e uscare, pe do<br />
qi<br />
ventia<br />
<strong>de</strong> inter-<br />
ogrutui-.nrin. tucrd,rile d.e refacer", n"oul'ltrhpf,i:tf<br />
rn cadrul directivelor schjlate mai sus. lucrr,rile <strong>de</strong> i,menajament nou,<br />
intocmite pentru<br />
-m-asivele in care se produce fenomenul <strong>de</strong> uscare intensd.<br />
rmpreuna, <strong>cu</strong> celelalte m5,suri silvice conduc la urm[toarele rezultate :<br />
, , . se rezolve, problemele imediate ln legd,turd, <strong>cu</strong> recoltarea materiatu.lur<br />
u-scat qi <strong>cu</strong> lichidare-a fiuprafelgtror a cd,ror consisten!tr, ir'pu'e <strong>de</strong><br />
urgenjd,<br />
{egenexarea (caztl suprafelblor <strong>cu</strong> consisten{r, suli O,?,'care urme.azd,<br />
a fi regenerate in 2o <strong>de</strong> a_nia!i a eelor <strong>cu</strong> consistenli sub'0,a; iluptr<br />
extragerea<br />
-arborilor usca!.i peste 75