Abstract

The paper describes a long-term experiment (2008–2018) on the influence of shrub coulisses on the vegetation cover of semidesert, degraded pastures. Changes in the height of the snow cover in winter, the reserve of productive moisture in the soil, the species composition, and the productivity of arid pastures in the dynamics of growth and development of shrub coulisses were studied. The experiments were carried out according to the methods of the All-Russia Scientific Research Institute of Agroforestry (Pavlovsky, 1973), the All-Russia Scientific Research Institute of Feed (Metodika…, 2015), and Dospekhov (1985). As a result, it was found that, with an increase in the height of teresken bushes, the snow-cover height increased on average by 3.5–11 times in comparison with a natural pasture without coulisses, depending on the amount of precipitation. In the first five years, the productive moisture reserve in the soil increased by 7.2–9.1 mm. When the coulisse height reached more than 1 m, it increased by 8.8–24.8 mm. Ten years later, on the site with coulisses, the number of dominants in the plant association increased by four species. Starting from the third year of teresken vegetation, the productivity of the pasture with coulisses grew 1.3–3.9 times over the years of research.

中文翻译：

---

俄罗斯南部干旱草场灌木灌木丛的改良效率

摘要

本文描述了一项长期实验（2008-2018年），研究灌木林对半沙漠化退化牧场植被的影响。研究了冬季灌木积雪的生长和发展过程中冬季积雪高度的变化，土壤中生产性水分的储备，物种组成以及干旱牧场的生产力。根据全俄农用林业科学研究所（Pavlovsky，1973），全俄饲料科学研究所（Metodika）的方法进行实验。…，2015年）和多斯佩霍夫（1985）。结果发现，随着特雷肯灌木丛高度的增加，与没有积雪的天然牧场相比，积雪的高度平均增加了3.5-11倍，具体取决于降水量。在头五年中，土壤中的生产性水分储备增加了7.2–9.1毫米。当coulisse高度超过1 m时，它增加了8.8–24.8 mm。十年后，在具亲缘关系的地点，植物协会的优势种群增加了四个物种。从多年生植被的第三年开始，带丘陵的牧场的生产力在研究期间增长了1.3-3.9倍。