The upper layers are the most fertile because of the buildup of many layers of dead branching stems and roots. This organic mater on the surface and in the dead roots provide a great degree of nourishment for the living plants. 10. Why are temperate grassland soils very fertile? (vt. õpik lk 61) Calfication is the dominat soil-forminf process in semiarid regions. When this process works on loess that itself is rich in calcium, the world’s most fertile soils are created, the chernozems. 11. How are animals adapted to life in temperate grassland? The animals that live in grasslands have adapted to dry, windy conditions. There are grazing animals (that eat the grass), burrowing animals, and their predators; insects are abundant. A moderate of level species diversity exists on a grassland. 12. Name some temperate grassland animals. Rhea, saiga, Mongolian gerbil, Prairie dog, bison, coyote, 13. What cultivated plants are grown in temperate grassland?
1)boniteet 5...25 hp Mh=[50*(B- 5)+L*1000]*A Boniteet üle 25 hp. Mh[300*(B-25)+1000+L*1000]*A(B-maa boniteet,L-lisakulude koefitsent,A-asukoha koefitsent)MAAILMA MULLASTIK- 1)lithosols-17,2%rendsiinid ja rankerid need on kivised ja õhukesed mullad,graniidil ja pael 2)ferrasols-16,9%troopikaala mullad 3)calcisols,kastanozems-15,7%kõrbelised ja poolkõrbelised mullad.4)regosols,arensols-10,1%vähem kuivad mullad 5)luvisols9,9%6)gleysols,fluvisols-7,1% 7)cambisols-7,0% 8)chernozems-5,5% 9)podzols-3,6% 10)solonchaks 2,0% 11)histosols-1,8% MULDADE KASUTAMINE JA KAITSE Huumuse sisaldus väheneb mustkesa ja rühvelkultuuride all 2t/ha, teravili 1t/ha, 1a heina 0,7 t/ha. Suurendavad- libl+kõrrel segu 1,5 t/ha, kõrrel 1t/ha. Vaesunud mullad, erosioon, saaste- (tehnogeense saaste allikad, õhku paisatakse tolmu,C,Cl,N, raskmetalle, leelismetalle, mikroelemente- kantakse tuulega laiali, sademed kannavad
growing season begins. The humus content gives soil horizons a brown colour. Temperate rainforest: This forest has nutrient-rich soil because there is a lot of dead organic matter on the ground. This dead material is being slowly digested by the fungi, insects, and bacteria that live here. Temperate Grasslands: Calcification is the dominant soil-forming process in semiarid regions. When this process works on a loess that itself is rich in calcium, the world's most fertile soils are created, the chernozems (A Russian term meaning black soil). Taiga: The low temperatures inhibit bacterial and fungal action, so the decomposition rate is low and the leaf litter relatively deep.The soil in the taiga is thin, acidic and not very nutrient rich. It also is rocky. 6. What is permafrost? In geology, permafrost, cryotic soil or permafrost soil is soil at or below the freezing point of water (0 °C or 32 °F) for two or more years
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