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ID number:427838
Evaluation:
Published: 20.09.2016.
Language: Latvian
Level: Secondary school
Literature: n/a
References: Not used
Extract

Augu kopu dabiskā nomaiņa
Faktori
Ja cilvēks to atstāj savvaļā un nekopj,tā turpina veidoties un mainīties.
Augi ietekmē cits citu un maina arī vidi.
Ja mainās mitruma un barības vielu daudzums augsnē,dažas sugas var tikt noēnotas un iznīkt.
Mežu pārpurvošanos veicina arī bebri,kas uzpludina plašas teritorijas.
Izcirtumu apgaismojuma palielināšanās.
Augu daudzveidības izmaiņas

Lapu kokus var nomainīt egles.
Mitros mežos, palielinoties sfagnu sūnu daudzumam, koku saknes vairs nevar sasniegt augsni ,un meža augu kopu nomaina purva augu kopa.
Izcirtumā strauji savairojas ātri augoši lakstaugi,tie cits citu noēno,tādēļ tā suga mainās un aizaug ar krūmiem un kokiem.

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