Изменение площади сельскохозяйственных угодий в Удмуртской Республике

Abstract

Based on the inventory of agricultural land materials for 1992 and the space images of high spatial resolution interpretation it was analyzed the distribution of agricultural land in the Udmurt republic by types and area. It is noted that over a 27 year period the area of cultivated agricultural land has decreased in the Republic by almost quarter at the same time in absolute terms arable land decreased most of all whill in relative terms fallow lands and hayfields. 27,0 th of ha (6,2 %) of total area of unused agricultural land was lost irretrievably as it was transferred for the construction linear and area facilities. The amount of undergrowth on 327,6 th./ha of former agricultural lands. The amount of undergrowth allows to transfer them to areas covered with forest vegetation lands. Taking into account the age of the formed young stands and their taxation indicators it is advisable to carry on scientifically based forestry on the indicated areas with thinning aimed at accelerating of tactical mature wood culturation. On 79,9 th./ha of arable lands, woody vegetation is at the stage of formation. Taking into account the effective soil fertility, these areas should divided into 2 groups. The first group will consist of a plot where effective soil fertility makes possible to grow a crop equal to or greater that the average grain yields in the municipal district over past four years escaping measures to improve soil fertility. Such plots should be returned to agricultural use. The second group with a total of 43,8 th./ha is a plot where without radical soil improvement grain yields are less than the average yield for the mancapal district over the post four years. At is advisable to give them for the creation of forest plantations from fast growing tree species with a short turnover of felling.