Open AccessThe spatial-and-temporal differentiation of the soil temperature and its influence on vegetation in the exposure-related forest-steppe of Transbaikalia
Author(s) -
О. А. Аненхонов,
Experimental Biology Sb Ras,
Д. В. Санданов,
А. А. Зверев,
Andrey Yu. Korolyuk,
Bulat B. Naidanov,
Д. Г. Чимитов
Publication year - 2020
Language(s) - English
Resource type - Conference proceedings
DOI - 10.17223/978-5-94621-927-3-2020-2
Subject(s) - steppe , vegetation (pathology) , homogeneous , environmental science , common spatial pattern , physical geography , ecology , soil science , hydrology (agriculture) , geography , geology , biology , medicine , physics , geotechnical engineering , pathology , thermodynamics
The long-term soil temperature monitoring in the area of more than 550 km in length within the region of Transbaikalia has been carried out. Sites for the monitoring were represented by the forest-steppe vegetation of different ecotopological and ecogeographical patterns. It was revealed that the dynamics of temperature regimens are highly synchronized reflecting the macroclimatic unity of the region. The sufficiently higher heat supply on the southerly exposed slopes comparing to northerly exposed ones was demonstrated. The distinctness between soil temperature regimens in different sites was revealed and attributed to the size of forested patches within the forest-steppe landscape, as well as discrepancies between eco-geographical features of sites along the sublatitudinal gradient. Differences between the vegetation types that occurred on the northern and southern slopes as well as between key sites scattered throughout the region were underlined. These differences are suggested to be connected with the spatial differentiation of the soil temperature. It was established that vegetation on the southern slopes is relatively more homogeneous being related to the single class Cleistogenetea squarrosae, while on the northern slopes plant communities related to three classes were developed, namely steppe class Cleistogenetea squarrosae, and two forest classes – Rhytidio-Laricetea and Vaccinio-Piceetea.