Rare species of plants of the national park «Burabai» (Central Kazakhstan)

In the Kokchetav elevation, located in the northern part of central Kazakhstan, due to terrain and climate, conditions were created to preserve the elements of Holarctic boreal flora. This area is represented by granite low hills with lots of lakes, around which there were formed pine and birch forests. Especially great floristic diversity of the area around lake Borovoje. Here in 1935 there was created a state reserve and in 2000 on its former territory there was organized the State National Natural Park «Burabai.» The flora of the national park «Burabai» contains 757 plant species, 95 of them classified as rare and endangered. Floristic studies in the national park «Burabai» in 2010-2011 allowed to specify the distribution of some rare plants. The article presents information on the distribution of rare plants included in the Red Data Book: Adonis vernalis L., Alnus glutinosa (L.) Gaertn., Cypripedium calceolus L., Drosera rotundifolia L., Sphagnum teres (Schimp.) Ångstr. of the national natural park «Burabai» (Central Kazakhstan). Sphagnum teres (Schimp.) Ångstr. forms a quagmire on the bank of the Maloje Karasje (Karasu) covering about 1000 m2. Cypripedium calceolus L. in the national park is found quite regularly in wellmoistened pine and birch, aspen-birch and aspen forests. We found six habitat of this species. The part of the populations located in the vicinity of Shuchinsk in areas of intense recreational pressure. These populations need special attention and protection. We examined Alnus glutinosa (L.) Gaertn. habitat, described by P.L. Gorchakovskii in the vicinity of s. Barmashino. There are 13 trees 18-20 m tall, alders, fruiting, making part of the wetland birch-aspen-pine forest, an area of1600 m2. the attention is drawn to the total change in the floristic composition ofwoody plants undergrowth. The increase in the proportion of alien plants has completely changed the structure of alder plantation. The most aggressive is the Euonymus europaea, which actively pushes out native species of the shrub layer, forming dense thickets. In the grassy layer there has been an increase in the proportion of weed species. In 1943 I.N. Olovyannikova estimated Adonis vernalis reserves L. within the natural park Borovoje. She refers Adonis to a group of medicinal plants found in the reserve in relatively large quantities and leads 14 locations. Our studies have confirmed the presence of this species in the park «Burabai» at two points: 1 km north-west of the Zolotoj Bor where Adonis vernalis grows in sparse birch forests and in the vicinity s. Bulandy. Here Adonis vernalis occurs in vast meadows of sparse pine and birch forests. Our studies have confirmed the location of the Drosera rotundifolia L. along the lake Maloje Karasje (Karasu). Sundew rotundifolia occurs in sphagnum hummocks of Sphagnum teres with Comarum palustre, Menyanthes trifoliata, Thelypteris palustris and other species.

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