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Eastern European Forest-steppes and Steppes: Trends in Bioproductivity of Ecosystems Driven by Land Use and Climate Changeстатья
- Авторы: Milanova E.V., Kirilenko A.P., Dronin N.M., Telnova N.O., Kalutskova N.N.
- Сборник: Land Use/Cover Change in Selected Regions in the World Atlas
- Том: 8
- Год издания: 2014
- Место издания: IGU-LUCC Institute of Geography, Hokkaido University of Education
- Первая страница: 19
- Последняя страница: 27
- Аннотация: Steppe and forest steppes zones cover 2.1 million km2 of land in Eastern Europe. The study area was a part of former USSR till the end of 2008 and currently includes the subregions belonging to different countries - the south of Russia, Ukraine and Moldova. The importance of these lands for economics of the countries is defined by the large-scale agriculture, which frequently takes over 50% of the lands.The climate in the region is continental warm with hot summer. While the temperature and precipitation limit the industrial agriculture to a relatively narrow belt, the major risk factor for agriculture is the intermittent pattern of precipitation and summer droughts, especially in south part of study area. The analysis was focused on two main factors that drive the changes in biological productivity of the region: the changes in land use and in climate. Land use structure in the region changed significantly during the past 30 years following altering strategies in agricultural management and land bioproductivity. Impact of climate change on bioproductivity was also considerable in the study area. The general circulation models (GCMs) projections of future climate continue the existing trends of increasing temperature with a some increase or small decrease of precipitation. The trends in biomass productivity of arable lands and grasslands over the period 1982-2006 were analyzed using the long-term series of the Normalized Difference Vegetation Index (NDVI). The significant changes in biomass productivity on both arable lands and natural pastures - grasslands were found. Analysis of trends distribution among phytogeographic provinces indicates that the shares of “browning”croplands and, especially, grasslands. The study reveals that steppe and forest steppe zones of Eastern Europe have similar trends that were defined by the new Global Assessment of Land Degradation and Improvement (GLADA) indicated that globally, over the period of 1981 to 2003, the greenness has increased, with large variability at the continental level. The research was done with support of the Russian Foundation for Basic Research (the “RFBR”).
- Добавил в систему: Миланова Елена Валентиновна