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The water and heat exchange between the atmosphere and the land surface plays a very important role. The Leaf area index (LAI), land surface albedo (LSA) and evapotranspiration (ET) which play a fundamental role in understanding many causes and consequences of land surface and climate interactions. However, relative contribution from altered albedo and ET to differences in energy budget in contrasting land use types is unclear in temperate climate zones. In this paper, to quantify the land surface water and heat fluxes arising from spatial patterns of land cover in the present climate, as well as enrich the land surface process field observations in the hinterland of Mongolian Plateau (MP) with rapid changes in vegetation growth by warming climate. Here, we focused on the LAI, albedo, ET and their relationships on the different roofing landscapes (the meadow steppe (MDW), the typical steppe (TPL), the desert steppe (DRT), the shrubland (SHB)). Based on the MODIS products 2000-2016, we found that there existed a significant linear negative correlation between LAI and albedo, but not found correlation between LAI and ET. Among the four vegetation communities, the normalized annual mean Z-score of LAI and ET all showed increased trend, especially for the TPL (slope = 0.091, p=0.036 for LAI and slope =0.086, p=0.050 for ET). However, for the normalized annual mean Z-score of albedo, other three landscapes all showed negative change trend, only for TPL, still showed pocitive change trend (slope =0.105, p=0.029). More importantly, the long-term changes in monthly albedo, ET and LAI values had different contributions to the annual values. Keyword: Land surface albedo, evapotranspiration, leaf area index, land surface process

Comparison of surface energy budgets and feedbacks to microclimate among different vegetation landscape on the Mongolian Plateau