[Tradeoffs and synergies of ecosystem services in western mountainous China: A case study of the Bailongjiang watershed in Gansu, China].

The Bailongjiang watershed of Gansu is an important water conservation and ecological barrier area in the upper reaches of Yangtze River. It is necessary to reveal the tradeoffs and synergies of ecosystem services (ESs) for the "win-win" of watershed ecological system and social eco-nomy development. Based on the InVEST model, four typical ESs including soil conservation (SC), water conservation (WC), food supply (FS), and habitat quality (HQ) were assessed, and the multi-scale tradeoffs and synergies of ESs and its drivers were analyzed by correlation and root mean square deviation (RMSD).

[A critical review of progresses and perspectives on ecosystem services from 1997 to 2018].

Ecosystem services (ESs) are the research highlight and hot topic in ecology, geography and environmental economics. Based on the literature database on ecosystem services from Web of Science, Citespace, Carrot 2 and textual analysis were used to review the progresses of ESs research during 1997-2018. The results showed that ESs research institutions and its publications increased quickly in the latest 20 years.