LIANAS SIGNIFICANTLY REDUCE TREE PERFORMANCE AND BIOMASS ACCUMULATION ACROSS TROPICAL FORESTS: A GLOBAL META-ANALYSIS

Lianas Significantly Reduce Tree Performance and Biomass Accumulation Across Tropical Forests: A Global Meta-Analysis

Lianas are a quintessential tropical plant growth-form; they are speciose and abundant in tropical forests worldwide.Lianas compete intensely with trees, reducing nearly all aspects of tree performance.However, the negative effects of lianas on trees have never been combined and quantified for multiple tropical forests.Here, we present the first co

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STUDY ON THE SETTLEMENT OF TUNNEL BOTTOM AND PRESSURE OF ROCK MASS BASED ON CURVED BEAM ON ELASTIC FOUNDATION THEORY

Tunnel invert is a weak section of curved beam on tunnel foundation, and it is easy to break down.Based on the curved beam theory LINDEN FLOWERS on elastic foundation, the curved beam model of tunnel invert was established, the displacement equation of tunnel invert under external load was deduced, and the formula of settlement of tunnel bottom and

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