Chudnovskaya G.V. 1
1 Irkutsk state agricultural Academy (664037
Phlojodicarpus sibiricus (Steph. ex Spregel) K.-Pol. - the type that has a limited distribution area of Siberian and Mongolian style, covering the steppe regions of southern Siberia. In East Transbaikalia occurs mainly in Phlojodicarpus steppes. The density of individuals in the average 0.5-1 ind./m2. Average weight of one root in an air-dry condition 38.7±3.87 g. Maximum weight of the root corresponds to средневозрастному and old генеративному state, is minimal in adults vegetative plants. The raw material phytomass mainly depends on the age of the individuals (r=0.53) and to a lesser extent on the structure of the Association (54±4.65 g/m2 in the steppe; 58±4.88 g/m2 - forest-steppe areas). Arrays production values in all the surveyed areas constitute only 107 hectares. The biological stock of raw materials in the identified areas - 105.84 tons, the production - 48.51 tons. Without prejudice to renewal every year you can harvest of 1.49 tons of raw materials.