Latvijas meža augšņu humusa raksturojums un veidošanās lauksaimniecības zemju apmežošanās procesā

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RESEARCH PRODUCT

Latvijas meža augšņu humusa raksturojums un veidošanās lauksaimniecības zemju apmežošanās procesā

subject

Vides zinātne apmežošanās humusa forma organiskais ogleklis Environment protection humusvielas augsne Vides aizsardzība

description

Promocijas darbā pētītas augsnes virskārtas morfoloģiskās īpašības (atbilstoši EHFRB humusa formu klasifikācijai), organisko vielu saturs, padziļināti pētīts augsnes humusvielu sastāvs un ķīmiskās īpašības. Pētījuma rezultāti liecina, ka sausieņu mežos Latvijā organiskajām vielām relatīvi bagātu augšņu (mull humusa formas) telpisko izplatību nosaka glacigēnie un glaciolimniskie nogulumi. Lauksaimniecības zemju apmežošanās procesā organisko vielu uzkrāšanās augsnes virskārtā sākas 30 gadus pēc apmežošanās, augstākā C krāja ir 60 līdz 100 gadus vecu meža zemju augsnēs. Palielināts koku nobiru īpatsvars meža attīstības gaitā augsnē veicina fulvoskābju īpatsvara pieaugumu, kā arī augsnes humīnskābju humifikācijas, aromatizācijas pakāpes un molekulmasas pieaugumu. Atslēgas vārdi: augsne, humusa forma, apmežošanās, organiskais ogleklis, humusvielas

year	journal	country	edition	language
2018-01-01

https://dspace.lu.lv/dspace/handle/7/38373

PEPhysical Sciences and Engineering
- PE2Fundamental Constituents of Matter
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- PE1Mathematics
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LSLife Sciences
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SHSocial Sciences and Humanities
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