Recreational activity has a significant impact on the Priol’khonie steppes and forest steppes, which are part of the Pribaikalskyi National Park (western coast of Lake Baikal, Russia). The aim of this investigation is the assessment of different landscapes’ values for the provision of ecosystems functions and services. To meet these objectives, fieldwork was conducted in the Priol’khonie steppes and forest steppes during the summer of 2013. The function of phytomass formation was considered for different land-cover types identified in the area, and the above-ground phytomass and inter-rill erosion were measured. The level of landscape degradation was estimated and draft maps of phytomass stocks and vulnerability to soil erosion of the investigated area were compiled. To show the dependence between the studied ecosystem functions and the ecosystem services provided by them, a scoring of the latter was made. It was found that characteristics of ecosystem functions varied significantly in the steppes of the Priol’khonie.
The authors present the results of geoinformation mapping the Primorskiy Ridge landscapes using Landsat 8 satellite images, the digital elevation model SRTM and the factor-dynamic classification of geosystems. At the first stage, the remote sensing data for different seasons were classified using the ISODATA method. Then, using the digital elevation model, the landforms were classified basing upon the topographic position index. According to combining the classification parameters of one of the space images and digital elevation model, each polygon is automatically assigned to a certain preliminary type of landscapes using boolean expressions. Legend adjustments were made basing upon the fieldwork materials. As a result, a digital landscape map of the southern part of the Primorsky Ridge was created; it reflects the landscape structure at the level of facies groups and contains attributive information about the landform, altitude, slope and aspect, topographic wetness index. The analysis of the landscape pattern showed a high fragmentation of landscape polygons, formed due to overlay operations, which indicates the need for generalization of landscape contours.
ВведениеАнтропогенную трансформацию среды, в частности, вселение чужерод-ных (адвентивных) растений, относят к одной из наиболее актуальных про-блем современной биологии [1]. Особое внимание привлекают инвазивные виды, к которым причисляют адвентивные растения из числа натурализо-вавшихся, образующие устойчивые популяции, дающие плодовитое потом-ство и способные распространяться на дальние расстояния [2][3][4]. В ряде регионов России проведено выделение из состава флоры инвазивных видов [5][6][7]; собранная информация по систематике, биологии и экологии таких растений публикуется в виде «черных книг» [8][9][10]. Однако данных о пове-дении и распространении видов на локальном уровне совсем немного (см., напр., [11]).
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