English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The ecological protection and high quality development of the Yellow River Basin has become a major national strategy in China. Studying the water use efficiency of important water source conservation areas in the upper reaches of the Yellow River is for promoting the allocation of water resources and regional green development. This paper takes 39 county units as the research object, based on the DEA (SE-SBM) model. Introducing the Human Green Development Index (HGDI) was applied to measure its water use efficiency and analyze its spatial pattern.

iop conference series. materials science and engineering

Spatiotemporal evolution of water use efficiency in water conservation areas in the upper reaches of the Yellow River: A case study of the Lanzhou-Xining urban agglomeration