Climate-induced lake dynamics in the Trans-Baikal forest-steppe ecotone
Quantitative dynamics, water surface area, and water level of lakes in the Trans-Baikal forest-steppe zone have been studied by spectroradiometry (Landsat satellite), gravimetry (GRACE satellite), and altimetry (Envisat satellite). The number of lakes and their water surface area correlated with precipitation (r = 0.84–0.85), summer and annual temperature (r =–0.77 to–0.9), and drought index (r = 0.95–0.97). During extremely dry periods (2006–2010), the number of lakes decreased by four (compared to 1989) and their water surface area decreased by three (compared to 2000). The rate of change in the water level of the lakes (periods of ~29 years) was determined.
Keywordslake dynamics Trans-Baikal forest-steppe Landsat GRACE altimetry SPEI
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