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ISSN 1993-3916

Arid Ecosystems

The “Arid Ecosystems” journal was organized by the decision of General Biology Division of the Russian Academy of Sciences.

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Архив метки: eroding

EVALUATION OF ECOLOGICAL CONDITION AND PRODUCTIVITY LOSSES OF ARID PASTURES ECOSYSTEMS OF SARPINSKY LOWLAND

Arid Ecosystems

Vlasenko M.V., Kulik A.K., Salugin A.N. EVALUATION OF ECOLOGICAL CONDITION AND PRODUCTIVITY LOSSES OF ARID PASTURES ECOSYSTEMS OF SARPINSKY LOWLAND // Arid ecosystems. 2019. V. 25. № 4 (81). P. 71-81. | PDF

We monitored the pastures ecosystems of the semi-arid zone in Sarpinsky Lowland of Russia and registered some local problems. The experimental data was collected through 1999-2017. It is stated that the present agro-landscape conditions are critical. The degraded pastures account for more than 600 thousands ha (34%), more than the half of which are highly degraded. 35-40%, of the total area of the regional forage grounds (about 1870 thousands ha) are moderately overgrazed, 30-40% are highly overgrazed, and 15-20% are excluded from the agricultural management and have turned into broken sands and abandoned territories. The digression is severely high on the winter (year-round) pastures. The area of open and drift sands has increased to 20-30%. In some districts the pressure on the pastures exceeds the optimal index 5-7 times. Almost all pastures need resting periods and agricultural restoration. Desertification (salinity, erosion and deflation) is a severe problem of the region. As the result of it the productivity loss of the pastures is 1052.7 thousands hwt of feed-units per year. Agroforestry measures have a significant value for preventing of soil erosion and deflation and are considered to be the many-functional, long-term protection factor. A map of forest conditions was composed to achieve the maximal ecological- and economical result of agroforestation; it was based on the agroforestry classification which represents the natural characteristics of the territory and features of its agroforestry developing

Keywords: desertification, deflation, eroding, salinity, pastures, annual productivity loss.

DOI: 10.24411/1993-3916-2019-10075

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