- Research in forestry is marked by large decreases in federal research capacity, stagnation of funding for research and extension, and the demise of industrial research following industrial divestment of timberlands. (El-Kassaby, Lindgren, 2007)
- This trend is termed yield stagnation or yield plateau, and has been observed in many of the crops that feed the world, especially cereals. (Acquaah, 2012)
- At a point where the trees are fully utilizing site resources, or a where there is a constraining factor (e.g., water on a dry site), volume growth will slow dramatically, trees will become unstable due to high height : diameter ratios, height growth will stop, and possibly 'stagnation' will result. (Burley, Evans, Youngquist, 2004)
stagnation|停滞 #每日一词#
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