Page 73 - Enzymes in Tropical Soils

Enzymes in Tropical Soils 61

Chapter V:

EFFECTS OF SOIL ORGANIC MATTERS

ON SOIL ENZYMES

5.1 Organic Matters as Sources of Energy for Microorganisms
5.2 Differences and Resistence of Organic Matters and Humus
5.3 Relationship between Soil Organic C and Enzymatic Activities
5.4 Relationship between Soil Total N and Enzymatic Activities
5.5 Regulating the Contents of Soil Organic Matter, Organic C, and Total N

E
nzymes in the soil system are produced by the living things occupying a part
or parts of the soil system called soil pores. These living things are greatly
affected by some other soil constituents in the soil air, soil water, and soil
solids. Among the soil solids greatly influencing the living things in the soil system
is the soil organic matter. Organic matter in the soil system functions as an energy
source for soil macroorganisms and microorganisms, including those producing
some important soil enzymes.
For example, the populations and activities of earthworms are positively
affected by the content of organic matter in soils. A higher content of organic

Abdul Kadir Salam - 2014