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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Global indicators of land degradation neutrality and their validation at the national level: case of Russiaтезисы доклада Тезисы
- Авторы: Andreeva O.V., Telnova N.O.
- Сборник: Practical Geography and XXI Century Challenges. International Geographical Union Thematic Conference dedicated to the Centennial of the Institute of Geography of the Russian Academy of Sciences, 4–6 June 2018, Moscow. Conference Book
- Редакторы: Иванов Сергей Владимирович, Себенцов Александр Борисович, Суслова Светлана Борисовна
- Том: 1
- Тезисы
- Год издания: 2018
- Издательство: Федеральное государственное бюджетное учреждение науки Институт географии Российской академии наук
- Местоположение издательства: Москва
- Первая страница: 323
- Последняя страница: 324
- Аннотация: Three indicators were recommended by the UNCCD to follow the progress in the monitoring progress towards achieving the Land Degradation Neutrality targets at the national level: land cover change (LCC), land productivity dynamics (LPD) and trends in soil organic carbon (SOC). All of them are based on open source datasets with global coverage: ESA CCI Land Cover product time series from 1992-2015, JRC’s LPD Dataset and SoilGrids (ISRIC). The use of these datasets are supposed to ensure comparable and standardized results in terms of revealing trends in land degradation for different evaluation periods based on “one-out – allout rule” and to support spatially-explicit framework for land monitoring and revealing hotspots. In the meantime, at the national level all the initial data and their assessments results need for trusted refinements, accuracy assessment and validation based on existing comparable data sources. In the case of Russia with its huge territory elaborative approach to assessment and interpretation trends in LDN indicators is necessary to keep in mind high and spatially heterogeneous diversity of ecosystems, climate types and land use patterns. In the absence of national time-consistent land cover products in Russia ESA CCI Land cover products for the period 2000-2015 was used without default in LDN methodology aggregation of land cover classes. Such approach affords to interpret numerous land cover transitions types separately for the regions with different landscape conditions and drivers of land degradation, more accurately and precisely reveal and evaluate the land degradation and land restoration spatial patterns in the semiarid areas. The accuracy assessment of cumulative LCC from ESA CCI products founds the overestimation of cropland expansion in steppe zone and underestimation of boreal forest loss for the Russian territory. The results of LPD assessment are consistent with trends revealed from different national evaluations and inventory, and also well verified with changes in crop yield and forest stocks. The main trouble presents SOC assessments derived from SoilGrids as this product have low accuracy and contain the great discrepancies both in absolute values as in their spatial distribution.
- Добавил в систему: Тельнова Наталья Олеговна