More then 5 thousands species of plants can be found in Tajikistan. The representatives of the animal world make their contribution to the soil formation and fertility, enriching it by organic substances, improving soil characteristics, creating favorable conditions for evolving of various microorganism. Animals play a great role in the natural cycles of plant growing as well as in vegetable community formations. Fertility of fruit trees and other cultures depends on insects' activity. Many plants' distribution area together with climatic factor is also connected with the activity of animals.
Birds distribute plant seeds over the large distances.
Birds and some mammals also play the significant role in protection of plants. The prey birds protect harvests from numerous rodents. The number of protectors of plants also includes some insects successfully used for biological protection of agricultural crops as an alternative to chemical methods of protection. Animals and plants are the integral part of landscapes. The number of animal world representatives depends on many factors, including human activity.