Review Questions
This test consists of 20 statements with one (or more) missing words from each.
Fill in the blanks using the appropriate word(s) from the drop-down menu next to each blank
(each one must be used only once).
You have 30 minutes to complete the test.

  
1. A key quality of the is the carrying capacity, i.e. how well the ground supports a machine in conditions.
2. This factor is of the utmost importance because it strongly the possibility for driving a fully loaded forwarder.
3. If the carrying is not taken into account the planning can go totally awry, causing vast additional costs, especially for the forwarding.
4. Furthermore, the carrying capacity can vary during timber , e.g. due to changing weather conditions.
5. For example, the may be hard as concrete initially at a site on till if harvesting start at the end of a dry summer, but following persisting autumn the ground at the site may be like liquid .
6. Consequently, the water content of the soil strongly affects the ground’s capacity and is a crucial to consider when assessing it.
7. Other important factors are the soil type, , hydrological parameters (water ), ground frost and the thawing of frozen .
8. In addition, you must also try to assess how much the stumps and reinforce the ground and thus improve the carrying capacity.
9. Clay soil is often referred to as "".
10. Clay soil that becomes too can take a long time to restore to a good soil texture.
11. The wet quality of clay soil requires the addition of large amounts of organic such as green plant material, animal manures, leaf mold and compost to improve its structure.
12. Contrary to sandy soil, clay soil has very small with tiny pore spaces or .
13. Since there are more pore spaces, soil has a larger total pore space than sandy , due to which the soil absorbs and retains more .
14. This makes clay soils poorly aerated and poorly .
15. Since clay soils have a high water-retentive capacity, they are prone to alternating and when the ground freezes and .
16. When a clay soil dries, it crusts and .
17. The cracking of the soil damages the and other parts of the plants.
18. Water and nutrient relations in forested soils on sloping topography greatly affect soil development and site .
19. Water movement in soils is one of the most important affecting soil genetic and morphological characteristics and, in turn, affects the vegetation.
20. Knowledge of water movement in forest soils on sloping is necessary for better evaluation of the soil productivity and understanding soil development.