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LanaAteljevi

biološki produktvitet

Technologie

Biološkiproduktivitet
ekosistema
učenici:Ateljević Lana i Džebo Gorjana I4

ŠTA JE TO
PRODUKTIVIT
ET I KAKAV
MOŽE BITI?
 PRODUKTIVITET ekosistema je organska proizvodnja
ekosistema koja se izražava masom organske materije
stvorene u jedinici vremena i prostora.To je brzina
stvaranja organske materije.Može biti primarni i
sekundarni produktivitet.

PRIMARNI
PRODUKTIVI
TET
 PRIMARNI PRODUKTIVITET u ekosistemu nastaje
procesom fotosinteze,pri čemu se prizviode organske
materije neposredno iz organskih.Istovremeno se
Sunčeva energija transformiše u potencijalnu hemijsku
energiju organskih jedinjenja i koristi za životne
potrebe organizma.

PRIMARNI
PRODUKTIVITET
 PRIMARNI PRODUKTIVITET naglo opada na
svakom narednom trofičkom stupnju.Treba razlikovai
bruto primarni produktivitet i neto primarni
produktivitet.
Najveća primarna produkcija je u tropskim kišnim
šumama

BRUTOPRIMARNA
PRODUKTIVNOST
 BRUTO PRIMARNA PRODUKTIVNOST je ukupna
fotosintetička proizvodnja jednog primarrnog
proizvođača.Sva se energija ne vezuje u tkivu,nego se
oko 60% troši za metabolizam same biljke i gubi se
putem toplotne energije.Samo energija koja preostane
može se koristiti za rast ili proizvodnju gameta,za
proizvodnju biomase a naziva se neto primarna
proizvodnja.
Neto primarna
proizvodnja
Bruto primarna
proizvodnja
Disanje
NPP BPP D

Brutoinetoproduktivitet
 BRUTO PRIMARNI PRODUKTIVITET pretstavlja
ukupnu brzinu akumulirane energije u toku procesa
fotosinteze.Neto primarni produktivitet
predstavljaukupnu količinu organske materije koja je u
vidu hrane dostupna stupnevima potrošača.

GRUPE
PRODUKTIVNOSTI
IMAMO 3 GRUPE PRODUKTIVNOSTI(g/m2):
1.Veoma niska(x=1g/m2/dan),u pustinjama,gdje je
ograničavajući faktor voda i na pučinama okeana na
dubini 200m,gdje nedostaju mineralne materije i gdje ne
dopire svjetlost.
2.Srednji produktivitet(x=10g/m2/dan),na livadama,uz
obale mora i na lošijem zemljištu u poljoprivredi i sa
slabom agrotehnikom
3.Veliki produktivitet(x=10g/m2/dan)u tropskim
šumama,na poljoprivrednim površinama,gdje se
primjenjuje agrotehnika.
4.Maksimalni produktivitet ne može biti veći od
25g/m2/dan.

Sekundarniproduktivitet
 SEKUNDARNI PRODUKTIVITET
 Brzina kojom se stvaraju rezerve energije na nivou
potrošača i rszlsgača organske materije označavaju se
kao sekundarni produktivitet.

Kakoseproduktivitetmože
mjeriti?
Produktivitet se može mjeriti količinom kiseonika
proizvedenog u procesu fotosinteze.Iznos kiseonika je
proporcionalan iznosu proizvedene organske
materije,tako da se na mjerenju produkcije kiseonika
može zasnivati procjena organske produkcije
Produktivitet se može mjeriti brznom njihovog
iščezavanja iz biotopa,tako da se organski
produktivitet može vještački povećati na razne
načine(đubrenje....).

Produktitetnekog
ekosistema
EKOSISTEM PRIMARNI BIOLOŠKI
PODUKTIVITET(godišnja
produkvija organskog
ugljenika u tonama na km2)
šuma Evrope 225t/km2
obradive površine 160t/km2
stepa 48t/km2
pustinja 6t/km2
jezgro sa tvrdom vodom 480t/km2
jezgro sa mekom vodom 240t/km2
more(sjeverni Atlantik) 560t/km2

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New Microsoft PowerPoint Presentation.pptx

1. Biološkiproduktivitet ekosistema učenici:Ateljević Lana i Džebo Gorjana I4

2. ŠTA JE TO PRODUKTIVIT ET I KAKAV MOŽE BITI?  PRODUKTIVITET ekosistema je organska proizvodnja ekosistema koja se izražava masom organske materije stvorene u jedinici vremena i prostora.To je brzina stvaranja organske materije.Može biti primarni i sekundarni produktivitet.

3. PRIMARNI PRODUKTIVI TET  PRIMARNI PRODUKTIVITET u ekosistemu nastaje procesom fotosinteze,pri čemu se prizviode organske materije neposredno iz organskih.Istovremeno se Sunčeva energija transformiše u potencijalnu hemijsku energiju organskih jedinjenja i koristi za životne potrebe organizma.

4. PRIMARNI PRODUKTIVITET  PRIMARNI PRODUKTIVITET naglo opada na svakom narednom trofičkom stupnju.Treba razlikovai bruto primarni produktivitet i neto primarni produktivitet. Najveća primarna produkcija je u tropskim kišnim šumama

5. BRUTOPRIMARNA PRODUKTIVNOST  BRUTO PRIMARNA PRODUKTIVNOST je ukupna fotosintetička proizvodnja jednog primarrnog proizvođača.Sva se energija ne vezuje u tkivu,nego se oko 60% troši za metabolizam same biljke i gubi se putem toplotne energije.Samo energija koja preostane može se koristiti za rast ili proizvodnju gameta,za proizvodnju biomase a naziva se neto primarna proizvodnja. Neto primarna proizvodnja Bruto primarna proizvodnja Disanje NPP BPP D

6. Brutoinetoproduktivitet  BRUTO PRIMARNI PRODUKTIVITET pretstavlja ukupnu brzinu akumulirane energije u toku procesa fotosinteze.Neto primarni produktivitet predstavljaukupnu količinu organske materije koja je u vidu hrane dostupna stupnevima potrošača.

7. GRUPE PRODUKTIVNOSTI IMAMO 3 GRUPE PRODUKTIVNOSTI(g/m2): 1.Veoma niska(x=1g/m2/dan),u pustinjama,gdje je ograničavajući faktor voda i na pučinama okeana na dubini 200m,gdje nedostaju mineralne materije i gdje ne dopire svjetlost. 2.Srednji produktivitet(x=10g/m2/dan),na livadama,uz obale mora i na lošijem zemljištu u poljoprivredi i sa slabom agrotehnikom 3.Veliki produktivitet(x=10g/m2/dan)u tropskim šumama,na poljoprivrednim površinama,gdje se primjenjuje agrotehnika. 4.Maksimalni produktivitet ne može biti veći od 25g/m2/dan.

8. Sekundarniproduktivitet  SEKUNDARNI PRODUKTIVITET  Brzina kojom se stvaraju rezerve energije na nivou potrošača i rszlsgača organske materije označavaju se kao sekundarni produktivitet.

9. Kakoseproduktivitetmože mjeriti? Produktivitet se može mjeriti količinom kiseonika proizvedenog u procesu fotosinteze.Iznos kiseonika je proporcionalan iznosu proizvedene organske materije,tako da se na mjerenju produkcije kiseonika može zasnivati procjena organske produkcije Produktivitet se može mjeriti brznom njihovog iščezavanja iz biotopa,tako da se organski produktivitet može vještački povećati na razne načine(đubrenje....).

10. Produktitetnekog ekosistema EKOSISTEM PRIMARNI BIOLOŠKI PODUKTIVITET(godišnja produkvija organskog ugljenika u tonama na km2) šuma Evrope 225t/km2 obradive površine 160t/km2 stepa 48t/km2 pustinja 6t/km2 jezgro sa tvrdom vodom 480t/km2 jezgro sa mekom vodom 240t/km2 more(sjeverni Atlantik) 560t/km2

11. HVALA NA PAŽNJI

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