|
|
Analýza obsahu a kvality organické hmoty ve vybraných půdních vzorcích
SLÁDKOVÁ, Jana
The evaluation of quantity and quality of soil organic matter is constantly evolving. New arising methods may or may not be put into practice. The aim of this thesis is to qualify the quantity and quality of soil organic matter using different approaches in order for the comparison to be made. Total organic carbon content, carbon con-tent in humic and fulvic acids and the ratio between CHK : CFK are included among the classical approaches in this thesis. On the other side, carbon content of soil or-ganic matter, stable organic carbon fractions, the rate constant of oxidation of or-ganic matter in the soil, and the setting of cationic bartering capacity according to Sandhoff are considered to be among the innovative approaches. The analysed samples were extracted from permanent grassland in the area of the village Třísov (Region Český Krumlov) in such a way that each sample was ex-tracted from different soil type (luvisols, pseudogleys, and gleys). The results of analysis carried out on each sample were found to be very similar after applying both the above-mentioned classical and innovative approaches of the evaluation of quantity and quality of soil organic matter. By using the listed approaches, it was proven the luvisols to be the best evaluated. However, the comparison of classical and new methods regarding the evaluation of quality of soil organic matter points out the difficulty of determining quality of non-humified organic matter using the classical approaches. On the contrary, the innovative approaches distinguish so called primary soil organic matter and humus.
|
guest ::
RSS feed.